Liquid level monitoring and control device

FIELD: machine building.

SUBSTANCE: device includes two level liquid sensors, three programming outputs of its functional capabilities and four outputs. When the first and the second programming outputs are closed and the third programming output is connected to the third output of the device, it is transformed to a liquid level monitoring and control system with its wavy surface using the first and the second outputs of the device, which provides a mode of liquid level monitoring and supporting at fixed height. When the first and the second programming outputs are open and the third programming output is connected to the third output of the device, it is transformed to the liquid monitoring and control system with its smooth surface in the mode of liquid level monitoring and supporting at its fixed height using the first and the second outputs of the device. When the programming outputs are disconnected, the device is transformed to an upper liquid level control annunciator using the third output of the device or a lower liquid level control annunciator using the fourth output of the device. The invention provides control of loads in the form of an electromagnetic relay or two windings of an electromagnetic starter, as well as in the form of inputs of logic elements of digital microcircuits.

EFFECT: enlarging functional capabilities of the device by increasing the number of controlled liquids and providing the operating mode of the device with wavy surface of controlled liquid.

7 cl, 17 dwg

 

The invention relates to the field of automation of production processes in mechanical engineering and is intended for automation of technological processes related to the control and regulation of liquid media.

Known monitoring device that contains the liquid level sensor, the trigger, the first and second repeaters, clock generator, the first and second keys of the voltage, the capacitor (see Kalashnik Century Auto water pump. The magazine "Radio", 1991, No. 6, p.32, 33).

However, this device has limited functionality because:

1) its design provides the only mode of filling and emptying of the reservoir with the fluid and prevents the operation of this device in a control mode and maintain the liquid level at a given fixed height, for example in the galvanic production in process baths for etching printed circuit boards, in baths for coating on metal parts, where unacceptable falling levels of controlled fluid from required elevations;

2) does not provide a horizontal mounting method on the object operation, as the device provides only vertical way its mounting on the object of operation;

3) does not allow the programming of its functionality;

4) RA allows the GTC to only one type of load in the form of an electromagnetic relay and does not allow, for example, his work simultaneously on two coil of the electromagnetic actuator pump units;

5) does not have the functionality of the control fluid from disturbed their surfaces, for example on moving objects, or technological production facilities in accordance with the technological process is the mixing of the liquid.

In addition, the design of the electrical circuitry of such devices provide control of liquid media only in the tank, the walls of which are made of conductive material. In the case of performing its walls of dielectric material is necessary to ensure control of the liquid on the object of operation to produce the completion of its design and scheme for the introduction of the second electrode sensor and fluid level control. These deficiencies in turn significantly degrade the operational characteristics of the device.

The closest to the technical nature of the proposed solution is a device to control and regulate the liquid level, comprising first and second fluid-level sensor, the trigger, the first and second repeaters, the inputs of which are connected to the outputs of the first and second fluid-level sensor, respectively, the differentiator, the output of which is the first output of the program is the formation, the setting unit in the initial state, the output of which is connected to the S-input of the trigger, the first display unit, the second display unit, the input of which is connected to the direct trigger output, the first output terminal, the first input of the second output terminal that is connected to the direct output of the trigger and which is the second output, the second output programming, in connection with the first output programming it is transformed into a system of control and regulation of liquid level with a calm its surface using the first and second outputs of the device, a third output terminal connected to the output of the first repeater and the third output device, a fourth output terminal connected to the output of the second repeater and the fourth output device (see EN 2379634. IPC G01F 23/18 (2006.01), G05D 9/12 (200601), publ. 20.01.2010, bull. No. 2).

However, this device has limited functionality, as it allows you to control only the conductive fluid, i.e. allows to control the limited range of liquids because of the lack of opportunities, for example, to make the control and regulation of the level of non-conducting liquids such as acetone, gasoline, turbine and transformer oils and other

In addition, the algorithm servant whom thou schemes such device does not provide a mode of controlling the level of liquids with disturbed their surfaces, for example, on moving objects or technological production facilities in accordance with the technological process is the mixing of the fluid, which also reduces its functional functional.

The task being solved by the invention is the extension of the functionality of the device by increasing the range of the controlled liquid media and ensure the regime level control of liquids with disturbed their surfaces.

The current task is achieved by the fact that:

in the device control and regulation of liquid level for option 1, containing the first and second fluid-level sensor, the trigger, the first and second repeaters, the inputs of which are connected to the first outputs of the first and second fluid-level sensor, respectively, and the outputs are respectively the third and fourth outputs of the device, the differentiator, the output of which is the first output programming the unit in its original state, the output of which is connected to the S input of the trigger, the first display unit, the second display unit, an input connected to the direct output of the trigger, which is the second output device, introduced the capacitor, the first the output of which is connected to the first output of the second liquid level sensor, one-shot, an input connected to the second output condense the ora, and the point of connection of its input and the second output capacitor is the second output programming, the first and second keys voltage, the first conclusions which are connected respectively to the input and the J-input of the trigger, the latter conclusions - to a common ground circuit device, the control inputs to the output of one-shot, a clock generator, the output of which is connected with input trigger, and the second output of the first liquid level sensor connected to the input of the differentiator, the second output of the second sensor with the J-input of the trigger, the inverted output of which is the first output device and the first display unit connected to the inverted output of the trigger, the point of connection To the input and first output of the first key voltage is the third output programming, in connection with which the third output device and the circuit between the first and second findings of the programming device is transformed into a system of control of the liquid level with disturbing its surface using the first and second outputs of the device, when the open state of the first and second findings programming and closed between a third output programming and third output devices in the system of control and regulation of liquid level with a calm its surface using a pen the first and second outputs of the device, and when the findings programming - in detector monitoring the top of the fluid level using the third output or lower the liquid level using the fourth output device while the first and second fluid-level sensor is performed optically, and their optical window mounted with a gap between each other in the same plane on the outer side surface of the device body along a straight line drawn through the geometric centers of the optical window sensors liquid level at an angle to the axis of symmetry of the device, and one of the ends of the device, near which has an optical window sensors, liquid level, is the working end of the device, together with the installation of the optical Windows of the second liquid level sensor closer than the optical Windows of the first liquid level sensor to the working end of the device and the gap between the optical Windows of the fluid-level sensor always provides when the unit is in original condition controlled washing liquid first optical window of the second liquid level sensor when the rise of its level in the upward direction to the optical Windows of the fluid-level sensor as in both vertical and horizontal mounting device, with slocate and and photodetectors with directional one-way optical Windows of the fluid-level sensor is formed on one outer side of the housing devices are sensitive element of the device, and directed to one side surface of the optical window sensors liquid level is formed on one outer side of the device its sensitive surface that interacts with the controlled fluid;

in the device according to option 2, made for option 1, the optical window sensors, liquid level, aimed in different directions, are mounted with a gap between them on different parallel between the planes of the outer side surfaces of the device along a straight line drawn between the geometric centers of the optical window sensors liquid level in the plane located at an angle to the axis of symmetry of the device, while the emitters and photodetectors with facing different sides of the optical Windows of the fluid-level sensor is formed with two outer lateral sides of the device, the sensing element of the device, and aimed in different directions of their optical surface Windows formed on the two external lateral sides of the device its sensitive surface that interacts with the controlled fluid;

in the device for option 3, made for option 1, one of the ends of the device, the surface of which has an optical window sensors, liquid level, is the working end of the device to the second is made with two parallel between the planes of the lower and upper steps, on planes with the outer side of the device body is installed with a gap between an optical window, respectively, the first and second fluid-level sensor along a straight line drawn through the geometric centers of the optical window sensors liquid level in the plane located at an angle to the axis of symmetry of the device, and installing on the outer side of the device body of the optical Windows of the first and second fluid-level sensor on the planes respectively of the lower and upper steps of the working end of the device and the gap between their optical Windows always provides when the unit is in original condition controlled washing liquid first optical window of the second liquid level sensor when lifting its level in the upward direction to the optical Windows of the fluid-level sensor as in both vertical and horizontal mounting device, while the emitters and photodetectors with optical Windows sensors, liquid level, directed to one side, forming the outer side of the device at two levels working end of the device the sensing element of the device and directed to one side surface of the optical window sensors liquid level is formed on the outer side of ustroystva two levels working end of the device its sensitive surface, interacting with the controlled fluid;

in the device for option 4, made for option 1, the first and second fluid-level sensor capacitive made, and their capacitive sensitive elements in the form of conductive plates of any geometrical shape, placed in a common protective insulating sheath, mounted with a gap between their end surfaces in the same plane along a straight line drawn through the geometric centers of one of the two flat surfaces of the capacitive sensitive elements of sensors, liquid level, oriented in one direction towards one of the two external lateral surfaces of General protective insulating sheath at an angle to the axis of symmetry of the device, both a flat surface capacitive sensitive elements of sensors liquid level together with areas, the overall protective insulating sheath above these flat surfaces and closely adjacent thereto, forming two outer lateral sides of a common protective insulating sheath sensitive element of the device, and the external lateral surfaces of General protective insulating sheath placed over both flat surfaces of the capacitive sensors level sensors liquid form on the two external lateral sides shared the protective insulating sheath sensitive surface of the device, interacting with the controlled fluid, and the end of the overall protective insulating sheath, near which has capacitive sensitive elements of sensors, liquid level, is the working end of the device, and the installation of the capacitive sensor element of the second liquid level sensor closer than capacitive sensing element of the first liquid level sensor, to the end of the overall protective insulating sheath, which is the working end of the device, and the gap between the end surfaces of the capacitive sensitive elements of sensors liquid level always provides when the unit is in original condition controlled washing liquid first capacitive sensing element of the second liquid level sensor when the rise of its level in the upward direction to capacitive sensitive elements of sensors liquid level as when both vertical and horizontal mounting device;

in the device for option 5, made for option 4, the capacitive sensitive elements of the fluid-level sensor is installed with a gap between their end surfaces on different parallel between the planes of the inner side surfaces of the device along a straight line drawn through the geometric centers of the flat surface the values of the capacitive sensitive elements of sensors, liquid level, oriented in different directions and closely adjacent to the inner side surfaces of the device, in a plane located at an angle to the axis of symmetry of the device, and a flat surface capacitive sensitive elements of sensors, liquid level, oriented in different directions and closely adjacent to the inner side surfaces of the device, together with areas of the side walls of the device, located above these flat surfaces, forming two outer lateral sides of the device, the sensing element of the device, and the external lateral surfaces of the device, located above the flat surfaces of the capacitive sensitive elements of sensors, liquid level, oriented in different directions, and closely adjacent to the inner side surfaces of the device, is formed on the two external lateral sides of the device sensitive surface of the device, interacting with the controlled fluid, with one of the ends of the device, near which has capacitive sensitive elements of sensors, liquid level, is the working end of the device body;

in the device for option 6, made for option 4, one of the ends of the device, on the inner surface the displacement of which is equipped with capacitive sensors sensors liquid level, is the working end of the device, which is made with two parallel between the planes of the lower and upper steps, the planes of which on the inner side of the device installed capacitive sensitive elements, respectively, the first and second fluid-level sensor along a straight line drawn through the geometric centers of the surfaces of the capacitive sensitive elements of sensors, liquid level, oriented in one direction in the direction of the outer surface of the working end of the device, in a plane located at an angle to the axis of symmetry of the device, and a capacitive sensitive elements of the fluid-level sensor is installed with a gap between their end surfaces, with a flat surface capacitive sensitive elements of the fluid-level sensor, oriented in one direction in the direction of the outer surface of the working end of the device, together with the areas of the walls of the working end of the device, located above these flat surfaces formed on the outer side of the device at two levels working end of the device the sensing element of the device, and the outer surface of the working end of the device, located above the flat surfaces capacitance is the shaft sensitive elements of sensors, liquid level, oriented in one direction in the direction of the outer surface of the working end of the device, is formed on two levels working end of the device sensitive surface of the device, interacting with the controlled fluid, however, the installation on the inner side of the device capacitive sensing element of the second liquid level sensor in the plane of the upper stage working end of the device, and the capacitive sensor element of the first liquid level sensor is in the plane of the lower step and the gap between the end surfaces of the capacitive sensitive elements of sensors liquid level always provides when the unit is in original condition controlled washing liquid first capacitive sensing element of the second liquid level sensor when the rise of its level in the upward direction to the capacitive sensitive elements of sensors liquid level as when both vertical and horizontal mounting device.

Figure 1 shows the functional diagram of the device;

in figure 2, figure 3 - diagram of the relative position and orientation of the optical window sensors liquid level on one outer side surface of the device according to the variant 1 of its execution;

figure 4 - scheme of the mutual is th location and orientation of the optical window sensors liquid level on the two external lateral surfaces of the device according to version 2 of its execution;

figure 5 - diagram of the relative position and orientation of the optical window sensors liquid level on the outer surface of the working end of the device according to version 3 of its execution;

in Fig.6, Fig.7. diagram of the relative position and orientation of the capacitive sensitive elements of sensors liquid level in the overall protective insulating sheath for option 4 performance of the device.

on Fig diagram of the relative position and orientation of the capacitive sensitive elements of sensors liquid level on the two inner side surfaces of the device according to version 5 of its execution,

figure 9 - diagram of the relative position and orientation of the capacitive sensors level sensors liquid on the inner surface of the working end of the device for the version 6 of its execution;

figure 10 - vertical mounting method of the device according to options 1, 2, 4, 5 performances;

figure 11 - horizontal mounting device according to options 1, 2, 4, 5 performances;

on Fig - vertical mounting method of the device according to version 3 of its execution;

on Fig - horizontal mounting device according to version 3 of its execution,

on Fig - vertical mounting device for the version 6 of its execution,

on Fig - horizontal mounting device for the version 6 of IP is filling up,

on Fig diagram stresses, explaining the operation of the device maintain the liquid level at its fixed height from the disturbed surface of the liquid;

on Fig diagram stresses, explaining the operation of the device maintain the liquid level at its fixed height with a calm liquid surface.

The device includes first and second sensors 1, 2 liquid level, the first and second repeaters 3, 4, the inputs of which are connected to the first outputs, respectively, of the first and second sensors 1, 2 liquid level, the differentiator 5, the inlet of which is connected to the second output of the first sensor 1 liquid level, terminal 6 connected to the output of the differentiator 5 and the first output programming, JK flip-flop 7, block 8 installation in the initial state of the circuit device, the output of which is connected to the S-input of the JK-flip-flop 7, the first and second blocks 9, 10 display whose inputs are connected respectively with the inverse and the direct outputs of the JK-flip-flop 7, the first and second output terminals 11 and 12 devices connected respectively to the inverse and the direct outputs of the JK-flip-flop 7 which are respectively the first and second output devices, third and fourth output terminals 13 and 14 are connected to the outputs respectively of the first and second repeaters 3 and 4 and which is the third respectively the fourth outputs of the device, the first and second keys voltage 15, 16, the first conclusions which are connected respectively To the input and the J input of the JK-flip-flop 7, the latter findings from the General ground of the circuit device, the one-shot 17, the output of which is connected with the control keys 15, 16, condenser 18, the first output of which is connected to the first output of the second sensor 2 liquid level, the second output of which is connected to the J input of the JK-flip-flop 7, the terminal 19 is connected to the connection point between the input of one-shot 17 and the second output capacitor 18 and the second output the programming terminal 20 connected to the connection point To the-input of the JK-flip-flop 7 and the first output of the first key 15 voltage and the third output programming the clock generator 36, the output it is connected with the input of the trigger 7.

Each sensor 1, 2 devices on options for his performances 1-3 executed (see figure 2 - figure 5, Fig, Fig), for example, on the basis of solid-state optical liquid level sensor from Honeywell, USA (see the Electronic components magazine No. 11, 2005, s, Fig.16; the site of the official distributor of "Compel" www.compei.ru, the site of the company "Honeywell" www.honeywell.com/sensing/products)whose output is the second output of the sensor 1 (2), and inverter, whose input is connected to the optical output of the solid-state sensor and its output is the first output of the sensor 1(2)

Optical solid-state dates the infrared liquid level Honeywell made under the scheme, including the voltage regulator, emitter-based led infrared radiation, which through a resistor connected to the voltage regulator, the photodetector based on the phototransistor, agreed on the spectrum of radiation from the emitter and is connected through a resistor to the power bus, the threshold element on the basis of the Schmitt trigger, the input connected to the output of the photodetector, and its output is the optical output of the solid-state liquid level sensor and the second sensor output 1 (2) of the device. The emitter and the photodetector of the optical solid-state liquid level sensor located inside the transparent polymer cap hemispherical shape, which serves as an optical window that performs simultaneously the function of the optical window sensor 1 (2) of the device.

If in the initial state in which the optical window of the solid-state liquid level sensor is not washed controlled fluid, an infrared radiation emitter is totally reflected from the hemispherical border polymer-air optical window and falls on the photodetector solid-state sensor when the preset threshold level of illumination of the phototransistor is opened, and its output is set to the voltage level of the logical "0". Under the influence of this voltage level switch is rogovogo element solid-state sensor, liquid level, and its output is set to the voltage level of the logical "1".

In the case of flow-controlled liquid optical window solid-state sensor, liquid level change of the refractive index on the hemispherical border polymer - controlled fluid that causes the change in the angle of reflection of infrared radiation emitter in the aperture of the photodetector. This leads to the fact that infrared radiation on the photodetector misses. As a result, the phototransistor is closed, and the threshold element is switched to another stable state in which its output and hence the output of the solid-state liquid level sensor is set to the voltage level of the logical "0".

Optical solid state liquid level sensor Honeywell is not sensitive to the level of comprometimento, transparency and uniformity of controlled fluid. It only responds to the presence or absence of contact of the optical window with controlled liquids. Such properties of the solid-state liquid level sensor allow you to implement the ability to control both conductive and non conductive liquids, i.e. to extend the functionality of the device by increasing the range of controlled fluid,

In embodiments 1-3 performances of the optical device is s box 21, 22 solid-state fluid-level sensor, Honeywell, part of the sensors 1, 2 devices installed nearby (see options 1, 2 performances of the device, figure 2 - figure 4, figure 10 - 11) or on the outer surface (see option 3 execution device 5, Fig - Fig) one of the ends of the device, which is its working end.

Optical window 21, 22 of the sensors 1, 2 are installed in the device with a gap between them. The gap between them is an important structural and functional parameter of the device and a device is required. The occurrence of a specified gap provides an implementation of the algorithm of operation of the circuit device and the achievement of a solution by the device of the task and the size of the gap between the optical Windows of the sensors 1, 2 in turn also determines the setting of the device, as the size of the width of the zone regulation device.

The gap between the optical Windows 21, 22 of the sensors 1, 2 liquid level provides within cycle regulation of its level of interaction of the controlled fluid 23 from the optical Windows 21, 22 in the following sequence, starting in the initial state of the device: the washing of the optical window 22 of the sensor 2; the washing of the optical window 21 of the sensor 1; drainage optical window 21 of the sensor 1; the drainage of the optical window 22 of the sensor 2 and the end n is this cycle regulation device of the liquid level. During cycle regulation of the liquid level is formed from the outputs of the sensors 1, 2 four corresponding signals to obtain the necessary algorithm of operation of the device when processing schema.

The size of the gap between the optical Windows of the sensors 1, 2 is selected at the design stage of the device to meet the specific technical requirements of the consumer (customer).

The minimum size of the gap between the optical Windows 21, 22 of the sensors 1, 2 is determined by the transverse linear size of the solid-state liquid level sensor Honeywell and its diameter optical window and is achieved by setting the cases of solid-state sensors liquid level Honeywell close to each other, i.e. no gap between their cases.

Setting the minimum gap between the optical Windows 21, 22 of the sensors 1, 2 minimizes the width of the zone control unit and the size of its body. The calculation of the minimum clearance distances Lcostand LZSbetween the optical Windows 21, 22 of the sensors 1, 2 depending on the version of the shell solid state liquid level sensor Honeywell is made by the formulas:

Lcost=D-d - for cylindrical housing solid state liquid level sensor Honeywell,

LZS=S-d - DL the hexagonal shape of the hull of the solid-state liquid level sensor Honeywell,

where D, d are the diameters respectively of the casing and the optical window of the solid-state liquid level sensor from Honeywell.

S - size turnkey housing solid state liquid level sensor from Honeywell.

The maximum gap between the optical Windows 21, 22 of the sensors 1, 2 depends on the linear dimensions of the device: the more transverse and longitudinal linear dimensions of the device, limiting the size of which in turn dictated the maximum possible size of the control zone and (or) mounting zone for the device on the object of its operation, the greater the gap may be present between the optical Windows 21, 22 of the sensors 1, 2 and thereby to expand the width of the zone control unit to the required values.

Installing the device optical window 22 of the sensor 2 is closer than optical window 21 of the sensor 1 to the working end of the device (see options 1, 2 performances of the device, figure 2 - figure 4, figure 10 - 11), or the installation on the outside of the housing 24 of the device optical window 22 and 21 of the sensors 2 and 1 on flat surfaces respectively of the upper and lower steps 25 and 26 working end of the device (see option 3 execution device 5, Fig. 12 - Fig), and the presence of a gap between the optical Windows 21, 22 of the sensors 1, 2 always provides a consistent interaction of the controlled fluid 23 at first it is as with an optical window 22 of the sensor 2, and then with an optical window 21 of the sensor 1 of the liquid level at the rise of its level in the upward direction to the optical Windows 22, 21 as with both vertical and horizontal mounting device, i.e. it is always controlled washing liquid first optical window 22 of the second sensor 2.

Circuit arrangement and orientation of the optical window 21, 22 of the sensors 1, 2 in the embodiments 1-3, the device is made as follows:

- option 1. Optical window 21, 22 are installed in the same plane on the outer side surface of the housing 24 of the device (see figure 2, figure 3) with a gap between itself and are located along a straight line 27 is drawn through the geometric centers of the optical window sensors 1, 2 at an angle 28 to the axis 29 of symmetry of the housing 24 of the device.

The geometric center of the optical window 21 (22) sensor 1 (2) is a point on top of a hemispherical surface, which passes through the axis of symmetry of the optical window of the sensor 1 (2) liquid level

The emitters and photodetectors with directional one-way optical Windows 21, 22 of the sensors 1, 2 is formed on one outer side of the device the sensing element of the device. The surface of the optical window 21, 22 of the sensors 1, 2, directed to one side, is formed on one outer side of the body 24 of the device e is on the sensitive surface, interacting with the controlled fluid 23.

In case of any consumer device requirements, the width of the zone control unit with vertical mounting devices was equal to its width zone regulation for horizontal mounting on the object of use, you should choose the angle 28, is equal to 45°. If, for example, at the specified angle 28 equal to 45°, to take over the nominal value of the width of the zone of control of the controlled fluid, the distance between the geometric centers of the optical window sensors 1, 2 horizontally and vertically, the distance between the geometric centres of the optical window 21, 22 vertically is the width of the zone of control of the controlled fluid at a vertical mounting of the device, and the distance between the centers of the horizontal width of the zone of control of the controlled fluid in a horizontal way its installation. Moreover, both the width of the control zones are equal, because they are sides (legs) of an isosceles triangle with an angle of 90° between them (see figure 2), formed by the three segments of the distances between the geometric centers of the optical window 21 and 22 horizontally (one leg), vertically (second leg) and along the line 27 (the hypotenuse). In the absence of such requirements, Ugol is chosen by the developer of the design of any device taking into account the technical requirements on it formulated by a user;

- option 2. Optical window 21, 22 of the sensors 1, 2 are directed in different directions and installed (see figure 4) with a gap between them on different parallel between the planes of the outer side surfaces of the housing 24 of the device along a straight line (figure 4 it is not shown for readability of the drawing), held between the geometric centers of the optical window 21 and 22 of the sensors 1, 2. Moreover, this line is drawn in the plane 30 is angled 28 to the axis 29 of symmetry of the housing 24 of the device. The emitters and photodetectors with facing different sides of the optical Windows 21, 22 of the sensors 1, 2 is formed with two external lateral sides of the body 24 of the device, the sensing element. Aimed in different directions the surface of the optical window 21, 22 of the sensors 1, 2 is formed on the two external lateral sides of the housing 24 of the device its sensitive surface that interacts with the controlled fluid 23.

If consumers are required to the device, the width of the zone control unit with vertical mounting devices was equal to its width zone regulation for horizontal mounting on the object of use, you should choose the angle 28 is 45°. Otherwise, the specified angle is chosen by the developer of the design of any device with which this is formulated by the customer technical requirements to it;

- option 3. The working face of the device is made in two steps, one of them is the top step 25, the second bottom step 26 (see figure 5), With the plane of the bottom of the stairs 26 parallel to the plane of the top 25. On the outside of the housing 24 of the device in the plane of the lower rungs 26 are installed optical window 21 of the sensor 1. On the same side of the housing 24 to the plane of the top 25 working end mounted optical window 22 of the sensor 2. Optical window 21 and 22 respectively of the sensors 1 and 2 are directed in one direction, i.e. in the direction of the controlled fluid, mounted with a gap between them along a straight line (figure 5 it is not shown for readability of the drawing), drawn through the geometric centers of the optical window 21, 22. Moreover, this line is drawn in the plane 30 is angled 28 to the axis 29 of symmetry of the housing 24 of the device.

The emitters and photodetectors with optical Windows 21, 22 of the sensors 1, 2, directed to one side, forming the outer side of the device at two levels working end of the device the sensing element of the device. Directed to one side surface of the optical window 21, 22 of the sensors 1, 2 is formed on the outer side of the device at two levels 25, 26 working end of the device its sensitive surface is knost, interacting with the controlled fluid 23.

If consumers are required to the device, the width of the zone control unit with vertical mounting devices was equal to its width zone regulation for horizontal mounting on the object of use, you should choose the angle 28 is 45°. Otherwise, the specified angle is chosen by the developer of the design of any device, taking into account user requirements.

In embodiments 4-6 performances of each sensor device 1, 2 is made, for example, a schema-based capacitive sensor (see the journal "Radio", No. 10, 2002, p.39, Fig. 5) and inverter, whose input is connected to the output of the capacitive sensor. The outline of this capacitive sensor includes a capacitive sensor element E1, consistently included multivibrator, is made on the basis of the operational amplifier DA1.1, to inverse input through a resistor R1 connected capacitive sensing element E1, the detector is made on the basis of the detection cascade DA1.2, the output of which is on the load in the form of a parallel RC-circuit R7C2, the threshold element, which is made on the basis of the operational amplifier DA1.3, the output of which is connected through a current limiting resistor and is the first output of the liquid level sensor 1 (2), and the output of the inverter I have is the second output of the sensor 1 (2).

Capacitive sensing element 31 (32)connected in the circuit of the negative feedback to the inverting input of the operational amplifier multivibrator (see Fig.6 - Fig.9), is one of the plates of a frequency control "open capacitor (see the journal "Radio", No. 10, 2002, ñ.38, Fig.1, Fig.2), the second plate which are electrical circuit common ground of the multivibrator and devices in General, and serves as a capacitive sensor element of the sensor 1 (2).

While capacitive sensing elements 31, 32 can be made of various geometric shapes, such as round, triangular, square, rectangular, five - or hexagonal and other shapes, i.e. any geometric shape, which would be the size of your square formation by the interaction of each capacitive sensing element 31, 32 is controlled by the liquid 23 of an electrical capacitor with the desired capacitance value sufficient for the occurrence of the mode of generation of electrical oscillations of the multivibrator sensors 1, 2 devices

Capacitive sensor is not sensitive to the level of comprometimento, transparency and uniformity of controlled fluid It fires from both conductive and non conductive controlled fluid, i.e., it responds only to the presence or absence of con the act of its sensitive surface with conductive and not conductive controlled liquids. Such properties of the capacitive liquid level sensor allow you to implement the ability to control both conductive and non conductive liquids, i.e. to extend the functionality of the device by increasing the range of controlled fluid.

In embodiments 4-6 performances device capacitive sensing elements 31, 32 of the sensors 1, 2 are located in the vicinity (6 - Fig) or on the inner surface (Fig.9) one of the ends of the device, which is its working end.

Capacitive sensing elements 31, 32 of the sensors 1, 2 are mounted with a gap between their end surfaces (see options 4-6 performances device, 6 - Fig.9).

The gap between the end surfaces of the capacitive sensing elements 31, 32 of the sensors 1, 2 is an important structural and functional parameter of the device and a device is required, since the presence of a specified gap provides the functionality of the device and sustainable work in normal conditions and in conditions of influence in extended ranges of climatic and mechanical factors on the operation and implementation of the algorithm of operation of the circuit device and the achievement of a solution by the device of the task. And the size of the gap between the end surfaces of the capacitive coustical the different elements 31, 32 sensors 1, 2 in turn also determines the setting of the device, as the size of the width of the zone regulation device.

However, in variants 5-6 performances of the device (see Fig, Fig.9) there is also a gap between the flat surfaces of the capacitive sensing elements 31, 32 facing each other as they are installed on different parallel between the planes on the inner side surfaces of the housing 24 of the device (see option 5 execution device, Fig) or on the surfaces of the lower and upper stages 26 and 25 on the inner side of the working end of the body 24 of the device (see option 6 execution device, Fig.9).

The gap between the flat surfaces of the capacitive sensing elements 31, 32 of the sensors 1, 2 is an important design parameter of the device and a device is required, since the presence of a specified gap provides the functionality of the device and sustainable work in normal conditions and in conditions of influence in extended ranges of climatic and mechanical factors on the object of operation.

The gaps between the capacitive sensitive elements 31, 32 of the sensors 1, 2 provide, starting from the initial state of the device, within the loop level control of the controlled fluid its interaction with the capacitive case is valid elements 31, 32 in the following sequence: the washing of the capacitive sensing element 32 of the sensor 2; the washing of the capacitive sensor element 31 of the sensor 1; the drainage of the capacitive sensor element 31 of the sensor 1; the drainage of the capacitive sensing element 32 of the sensor 2 and the end of this cycle regulation device of the liquid level.

During cycle regulation of the liquid level is formed from the outputs of the sensors 1, 2 four corresponding signals to obtain the necessary algorithm of operation of the device when processing schema.

The size of the gap between the capacitive sensitive elements 31, 32 of the sensors 1, 2 are chosen at the design stage of the device to meet the specific technical requirements of the consumer (customer).

The minimum width of the gaps between the capacitive sensitive elements 31, 32 of the sensors 1, 2 as between their face and the flat surfaces is selected such that when it is selected there was no interaction between the electric field capacitive sensing elements 31 and 32, resulting in mutual interference circuit sensors 1, 2 and, consequently, to the disturbance of the stability of operation of the electrical circuit of the device. Installation minimum clearances between the capacitive sensitive and elements 31 32 minimizes the width of the zone control unit and the size of its body.

The maximum gap between the capacitive sensitive elements 31, 32 of the sensors 1, 2 are determined by the linear dimensions of the device: the more transverse and longitudinal linear dimensions of the body 24 of the device, limiting the size of which in turn dictated the maximum possible size of the control zone and (or) mounting zone for the device on the object of its operation, the large gaps may be present between the capacitive sensitive elements 31, 32 and thereby improve the stability of the device under operating conditions and extend the width of the area of regulation.

Installing the device capacitive sensing element 32 of the sensor 2 is closer than capacitive sensing element 31 of the sensor 1 to the working end of the device (see options 4, 5 performances of the device, 6 - Fig), or install the inner side of the housing 24 of the device capacitive sensitive elements 32 and 31 of the sensors 2 and 1 on the surfaces respectively of the upper and lower steps 25 and 26 working end of the device (see option 6 execution device, Fig.9), and the gap between the end surfaces (options 4, 5, 6 performance of the device, 6 - 11) capacitive sensitive elements of sensors 1, 2 always provides a consistent interaction of the controlled fluid first capacitive case the raised element 32 of the sensor 2, and then with the capacitive sensor element 31 of the sensor 1 at the rise of its level in the upward direction to the capacitive sensing elements 32, 31 as with both vertical and horizontal mounting device, i.e. it is always controlled washing liquid first capacitive sensing element 32 of the second sensor.

Scheme relative position and orientation of the capacitive sensing elements 31, 32 fluid-level sensor in embodiments 4-6 performances of the device is made as follows:

- option 4. Capacitive sensing elements 31, 32 of the sensors 1, 2 are placed in a common protective insulating sheath 33. Moreover, capacitive sensing elements 31, 32 of the sensors 1, 2 are mounted with a gap between their end surfaces and are located in one plane along a straight line 27. Direct line 27 is drawn through the geometric centers of one of the two flat surfaces of the capacitive sensing elements 31, 32 of the sensors 1, 2, oriented in one direction towards one of the two external lateral surfaces of General protective insulating sheath 33. With a direct line 27 held at an angle 28 to the axis of symmetry 29 of the housing 24 of the device (see Fig.6 and 7). Both flat surface - capacitive sensing elements 31, 32 together with areas, the overall protective insulating sheath 3, above these flat surfaces and closely adjacent thereto, forming two outer lateral sides of a common protective insulating sheath sensitive element of the device. The area of the outer side surfaces of General protective insulating sheath 33, located on both flat surfaces of the capacitive sensing elements 31, 32, formed on the two external lateral sides of the common protective insulating sheath sensitive surface of the device, interacting with the controlled fluid 23. End of General protective insulating sheath 33, near which has capacitive elements 31, 32 of the sensors 1, 2, is the working end of the device.

The role of General protective insulating sheath 33 performs a case sensitive element of the device, structurally formulated intermediate technological operations as a separate Assembly unit of the device, or directly to the housing 24 of the device depending on the selected technology devices. In order to guarantee the required sensitivity (sensing distance and distance release) devices and change within acceptable parameters as in normal conditions of use and service conditions under the influence of the climatic and mechanical factors, building the sensitive element of the device or housing 24 of the device is made of a dielectric polymer material with a relatively high value of the relative dielectric permittivity ε;

- option 5. Capacitive sensing elements 31, 32 of the sensors 1, 2 are installed on different parallel between the planes of the inner side surfaces of the housing 24 of the device. While capacitive sensing elements 31, 32 of the sensors 1, 2 are mounted with a gap between their end surfaces. Moreover, capacitive sensing elements 31. 32 sensors 1, 2 are located along a straight line (on Fig it is not shown for readability of the drawing), drawn through the geometric centers of the flat surfaces of the capacitive sensing elements 31, 32 of the sensors 1, 2, oriented in different directions and closely adjacent to the inner side surfaces of the housing 24 of the device. The specified straight line in the plane 30 is angled 28 to the axis 29 of symmetry of the housing 24 of the device. The flat surface of the capacitive sensing elements 31, 32 of the sensors 1, 2, oriented in different directions and closely adjacent to the inner side surfaces of the housing 24 of the device, together with the areas of the side walls of the housing 24 of the device located above these flat surfaces, forming two external lateral sides of the body 24 of the device the sensing element of the device. The area of the outer side surfaces of the housing 24 of the device located above the flat surfaces of the capacitive sensitive 1, 32 sensors 1, 2 are oriented in different directions and closely adjacent to the inner side surfaces of the housing 24 of the device formed on the two external lateral sides of the housing 24 of the device sensitive surface of the device, interacting with the controlled fluid 23. In order to guarantee the required sensitivity (sensing distance and distance release) devices and change within acceptable parameters as in normal conditions of use and service conditions under the influence of the climatic and mechanical factors, the area of the side walls of the housing 24 of the device located above the flat surfaces of the capacitive sensing elements 31, 32 of the sensors 1, 2, or housing 24 of the device is made of a dielectric polymer material with a relatively high value of the relative dielectric permittivity ε;

- option 6. The working face of the device is made with two parallel between the planes of the upper and lower steps 25, 26. On the planes of the upper and lower steps 25, 26 on the inner side of the housing 24 mounted respectively capacitive sensitive elements 32, 31 sensors 2 and 1 along a straight line (figure 9 it is not shown for readability of the drawing). This line is drawn in the plane 30 across the geometric centers of the flat surfaces of the capacitive sensing elements 31, 32 sensors 1, 2, oriented in one direction towards the outer surface of the working end of the body 24 of the device. Plane 30 is located at an angle 28 to the axis 29 of symmetry of the housing 24 of the device. Moreover, capacitive sensing elements 31, 32 of the sensors 1, 2 are mounted with a gap between their end surfaces. This flat surface capacitive sensing elements 31, 32 sensors oriented in one direction towards the outer surface of the working end of the body 24 of the device, together with the areas of the walls of the working end of the body 24 of the device located above these flat surfaces formed on the outer side of the device at two levels of the working end of the body 24, the sensing element of the device, and the area of the outer surface of the working end of the body 24 of the device located above the flat surfaces of the capacitive sensing elements 31, 32 of the sensors 1, 2, oriented in one direction towards the outer surface of the working end of the body 24 of the device, is formed on two levels of the working end of the body 24 of the sensitive surface of the device, interacting with the controlled fluid 23. In order to guarantee the required sensitivity (sensing distance and the distance of the release device and change it within the permissible limits as per normal the s conditions of use, and in conditions when exposed to climatic and mechanical factors, the area of the walls of the working end of the body 24 of the device located above the flat surfaces of the capacitive sensing elements 31, 32 of the sensors 1, 2, or housing 24 of the device is made of a dielectric polymer material with a relatively high value of the relative dielectric permittivity ε.

Unit 8 installation to its original state diagram of the device is made, for example, on the basis of the transistor n-p-n type and an RC circuit (see figure 1)consisting of series-connected capacitor and resistor, the connection point of the first conclusions of which is connected to the base of transistor block 8, and the second output resistor and the output of the emitter of the transistor unit 8 connected to a common ground circuit device. The second output capacitor connected to the power supply voltage and the collector of the transistor, which is the output unit 8 is connected to the S input of the trigger 7. Unit 8 is designed for installation schematic of the device to its original state at the time of filing at him power supply

Blocks 9 and 10 display is performed, for example, based on (see figure 1) series-connected resistor, the first terminal connected to the inverse or direct outputs of the trigger 7, and led, the cathode of which is connected to the common ground circuit ustroistvo 9 and 10 display are designed for visual inspection of the supply to the external load (not shown in figure 1) control signals, respectively, with inverse and direct outputs of the trigger 7 and control a working state device.

Repeaters 3 and 4 are for matching the output impedance of the first outputs, respectively, of the first and second sensors 1, 2 and resistances external loads connected to their outputs through the output terminals 13 and 14 of the device.

The outputs of the trigger 7 and repeaters 3, 4 is performed with levels of load capacity, providing switching control windings of electromagnetic actuators and low-power electromagnetic relay. In addition, the load can be the inputs of the logic elements of digital circuits.

The keys 15 and 16 are used to form pulses of negative polarity the same duration as the output pulse of one-shot 17, respectively, To the input and the J-input of the trigger 7 by closing these conclusions on the General ground of the device. The keys 15 and 16 is made, for example, on the basis of the transistor n-p-n type. The first findings of the keys 15, 16 are the conclusions of the collectors of transistors, the second conclusions - the conclusions of their emitters, the control inputs of the keys 15, 16 are the conclusions of the bases of the transistors.

The one-shot 17 is made, for example, according to the scheme standby multivibrator based trigger and timing RC circuit in the form of a series-connected resistor and capacitor, a resistor, RT, mg which is connected to the power source and the connection point connected to the R input of the Tr is ghera. Input A1, which is the input of one-shot, served triggering pulses. The inputs A2 and thus serves voltage levels logic "1", and the direct trigger output is the output of the one-shot 17 (see the book Shiloh V.L. Popular digital circuits: the manual. M.: Radio and communication, 1987. - 352 S.: ill. - (Mass reliability. VIP), s, 1, a, b). The one-shot 17 is designed to generate pulses of voltage levels logic "1" for switching keys 15, 16, applied to their control inputs, negative differential voltages on the second and first outputs, respectively, of the first and second sensors 1 and 2. The duration of the pulse generated by one-shot 17 is determined by the delay of the switching of the trigger 7 in the moments of occurrence of the above differential stresses formed in the moments flow detector element 1 is controlled by the liquid and drying the sensitive element of the sensor 2 in the process of control and regulation of liquid level when disturbed its surface. Excited state level of the controlled fluid is mobile and stationary technological production facilities operation. When disturbed the surface of the controlled fluid, for example, can produce its single or repeated vspl the ski, spray or wave with a constant frequency of occurrence, which can be briefly wash or dry sensitive elements respectively sensors 1 or 2, when the level of the controlled fluid is near on the verge respectively washer and below the sensing element of the sensor 1 or draining and above the sensing element of the sensor 2.

Such accidental washing or drying sensitive elements of sensors 1 and 2 cause false momentary actuation respectively of the sensors 1 and 2 and the appearance of false switching of the trigger 7 and therefore of the device. To eliminate the occurrence of false positives device introduced delay switch trigger 7 in the moments of occurrence of false positives of the second output of the first sensor 1 and the first output of the second sensor 2. While the length of the delay is determined by the duration of the output pulse of one-shot 17. The duration of this delay is chosen such that it was more than the duration of a washing or drying sensitive element respectively of the first or second sensors 1, 2 surges or wave of the controlled fluid. In the case of permanent spray duration of such delay is chosen with regard to the rate of descent or ascent of the controlled liquid level. Duration of the delay opredelyaetsya false washing or drying sensitive elements and the guarantee of the controlled liquid level above or below, respectively, the sensing element of the first sensor 1 or sensitive element of the second sensor 2 after the beginning of his false positives

The differentiator 5 is designed to generate pulses of negative polarity negative swings of the output voltage on the second output of the first sensor 1 and the first output of the second sensor 2 to start the one-shot 17. The differentiator 5 is made, for example, on the basis of a differentiating RC circuit consisting of series-connected capacitor, a first output which is the input of the differentiator 5 and resistor in parallel, which included a diode, the anode of which is connected to the connection point of the first output resistor and a second output capacitor, which is the output of the differentiator. Thus the cathode of the diode and the second terminal of the resistor RC circuit connected to the power supply voltage (see figure 1).

Clock generator 36 made, for example, by any known scheme of the multivibrator. Clock generator 36 generates at its output rectangular pulses for clocking the trigger 7 on it With input. On the leading edge of the clock pulse generator 36 is the recording of information with the J - and K - inputs, respectively, of its direct and inverted outputs.

Terminal 6 connected to the output of the differentiator 5, the terminal 19 is connected to the connection point between the input of one-shot 17 and the second output capacitor 18, and the terminal 20, connected to the exceptions to the e connection To the input of the trigger 7 and the first output key 15, are respectively the first, second and third pins of the programming. Conclusions programming intended for programming the functionality of the device. When the terminal 6 and the terminal 19 is closed between itself and the terminal 20 is connected to the terminal 13, which is the third output of the device, the device is transformed into the system of control and regulation of liquid level with disturbing its surface using its first and second outputs, which are respectively output terminals 11 and 12. When the capacitor 18 is connected to the output of the differentiator 5, formed with a resistor and the diode of the differentiator 5 differentiating circuit, forming a negative differential output voltage U5 on the first sensor output 2 output of the differentiator 5 pulse voltage U8 level logic "0" to start the one-shot 17. In case of disconnection of the terminals 6 and 19 and the connection terminal 20 to terminal 13 of the device is transformed into the system of control and regulation of liquid level with a calm its surface using its first and second outputs, which are respectively output terminals 11 and 12. When the terminal 6 and the terminal 19 is opened and the terminal 20 is disconnected from terminals 13, i.e. terminal 6, 19, 20 are in the disabled state, the device is transformed into a siren control top the level of the liquid using the third output device or detector control lower liquid level using the fourth output device. Moreover, the programming functionality of the device is performed by a simple method without changing its design through circuit or disconnection of the terminals 6 and 19 and the connecting terminal 20 to terminal 13 or disable it from the terminal 13 at the wiring on the object of operation.

Figure 1 is a diagram of the device depicted in this state, in which its functionality correspond to the functionality of the switches control the upper or lower liquid level, when the program pins 6, 19, 20 disabled.

When you need to manage industrial pumping units through electromagnetic starter with two control windings on it off and on, are utilized at the same time, respectively, the first and second outputs of the device. In the case of control of the pumping installation using a single electromagnetic relay with one control winding is used to control only the second output device, which consists of or includes an electromagnetic relay.

Consider the operation of the device in four different modes: maintain the liquid level at its fixed height from the disturbed surface of the liquid, maintaining liquid level on its fixed height with a calm surface of the liquid in the mode of signaling stake is control of the upper liquid level and the mode switch controls the lower liquid level.

1. The operation of the device in the mode of maintaining the liquid level at its fixed height from the disturbed surface of the liquid.

This mode can be used vertical or horizontal mounting of the device in open and closed tanks, walls can be made of conductive or dielectric material. The device 34 is installed on the object of operation in vertical or horizontal positions (see figure 10 - Fig) to control the conductive and non conductive liquids. Terminals 6 and 19 thus closed between itself and the terminal 20 is connected to terminal 13. In this case you use the first and second outputs of the device, and its third and fourth outputs to control external loads are not involved.

When applying at time t0on the device with a power supply unit 8 is the charge of the capacitor through the transition emitter-base of transistor n-p-n type (see figure 1). When this transistor unit 8 is opened, and through its transition collector-emitter served on the S-input of the trigger 7, the pulse voltage U1 with logical level "0" (see Fig). As a result, the inverse and the direct outputs of the trigger 7 and respectively on the first and second output terminals 11 and 12 are set voltage U10 and U11 levels logic "0" and logic "1" corresponding what about the led unit 9 display goes out, and the led unit 10 of the display is exposed. After the end of charge of the capacitor unit 8 its transistor is closed and further on the operation of the circuit device is not affected, since its base is connected through a resistor to a common ground circuit device. Then the output of block 8 and the S-input of the trigger 7 is set to the voltage U1 with logical level "1". Through resistor differentiator 5 at its output and the input of the one-shot 17 is set to the voltage U8 with logical level "1". At the same time at the output of the one-shot 17 is set to the voltage U9 level logic "0". However, the sensors 1, 2 are set to the initial state in which the second outputs of the sensor 1 and sensor 2 are respectively the voltage U3 and U6 with log levels."1", and the first outputs of the sensors 1, 2, respectively, the voltage U2 and U5 with log levels. "0"as the initial condition in the tank 35 is controlled fluid 23 is absent, and the sensitive elements of sensors 1, 2 are in the drained condition. As a result, the outputs of the repeaters 3 and 4 are, respectively, the voltage U4 and U7 with logical levels "0"and the input of the differentiator 5 - voltage U3 with logical level "1". As to the J input and the K input of the trigger 7 from the second sensor output 2 and output of the repeater 3 set voltage U6 and U4 for the NGOs with the logical levels "1" and logical "0", it is this combination of logic signals to the J input and the K input of the trigger 7 on the leading edge of the clock pulse generator 36 of switching to another state does not occur, but only by its initial state, in which its inverse and direct outputs have voltage U10 and U11 levels logic "0" and logic "1" respectively. After that, the led unit 9 display continues to be in a suppressed state, and the led unit 10 of the display in a lighted condition. With direct trigger output 7 via the output terminal 12 is energized U11 with logical level "1" to the control winding of the inclusion (figure 1 it is not shown) of the electromagnetic contactor of the pump installation. Then begins filling the tank 35 liquid 23 and controlled by the liquid level 23 in the tank 35 begins to climb up.

At time t1is the washing liquid 23 of the sensing element of the sensor 2. As a result, the sensor 2 is switched to another state in which its first and second outputs are respectively the voltage U5 and U6 with the logical levels "1" and logical "0". But at the time of the positive voltage U5 supplied to the first output capacitor 18, the output of the differentiator 5 forming voltage pulse U8 level l is logical "0" is not happening, as the differentiator 5 generates this pulse only at the moment of appearance of the first output capacitor 18 negative differential voltage U5 from the first output of the sensor 2. So start the one-shot 17, forming at its output pulse voltage U9 with logical level "1" and the circuit of the keys 15, 16 does not occur. At the J input and the K input of the trigger 7 from the second sensor output 2 and output of the repeater 3 is set accordingly, the voltage U6 and U4 levels logic "0"when the trigger 7 continues to maintain its previous state, as this combination of logic signals to the J input and the K input of the trigger 7 on the leading edge of the next clock pulse generator 36 switching it to another state does not occur. As a result, starting from time t1continues the process of filling the tank 35 liquid 23,

At time t2the sensor 1 is washed by the liquid 23. As a result, the sensor 1 is switched into a state in which the first output is the voltage U2 with logical level "1"which is input to the repeater 3. In the moment of the negative differential output voltage U3 of the sensor 1 (see Fig) at the output of the differentiator 5 is formed of a pulse voltage U8 level logic "0". Under the action of e is th pulse of the one-shot 17 is started and its output is generated pulse voltage U9 with logical level "1", served on the control inputs of the keys 15, 16. In the last closed at the time of the positive pulse voltage U9 output the one-shot 17. During the closed state of the key 15, the voltage U4 with logical level "1" from the output of the repeater 3 To the input of the trigger 7 fails, and J-login, login trigger 7 continue to be, respectively, the voltage U6 and U4 levels logic "0". As a result, the trigger 7 continues to maintain the previous state for the closed state of the keys 15, 16. The decay of the pulse voltage U9 the one-shot 17 keys 15, 16 are opened and the output of the repeater 3 To the input of the trigger 7 is energized U4 with logical level "1". As to the J input and the K input of the trigger 7 is set accordingly the voltage U6 and U4 with logical levels "0" and logical "1"on the leading edge of the next clock pulse generator 36 he switches to another state in which to its inverse and direct outputs are respectively the voltage U10 and U11 levels logic "1" and logical "0". Then the led unit 10 of the display goes out and the led unit 9 display flashes. At this point, with the inverted output of the trigger 7 through the output terminal 11 of the voltage U10 with logical level "1" to the control winding (figure 1 it is not shown)off of the electromagnetic contactor of the pump installation. In the pump unit is switched off, and the reservoir 35 liquid 23 in the switch trigger 7 is stopped. Then the scheme of arrangement and position of the level of the controlled fluid 23 can be in this state until, until the start of its consumption.

After the switch trigger 7, for example, starts the flow of the controlled fluid 23. After a certain period of time at time t3is the drainage of the detector element 1. When this occurs, the switch sensor 1 in another state in which its first and second outputs are respectively the voltages U2 and U3 with the logical levels "0" and logical "1". But under the action of a positive differential voltage U3 supplied from the second output of the sensor 1 to the input of the differentiator 5, forming at its output pulse voltage U8 level logic "0" occurs because the differentiator 5 generates this pulse only negative differential input voltage U3. So start the one-shot 17 and the switching key 15, 16 does not occur. At the output of the repeater 3 sets the voltage U4 with logical level "0"which is supplied To the input of the trigger 7. As to the J input and the K input of the trigger 7 is set accordingly the voltage U6 and U4 with logical levels "0", that is on the leading edge of the next clock pulse generator 36 of the switch trigger 7 in another state does not occur, and it retains its previous state when its inverse and direct the output voltage is set accordingly U10 and U11 levels logic "1" and logical "0". In the pump unit continues to be in a disabled state, so at time t3the fluid flow 23 continues its level continues to drop in the tank 35 down to a sensitive element of the sensor 2.

After a certain period of time at the moment U is draining sensitive element of the sensor 2. As a result, the sensor 2 is switched to another state where his second and first outputs are respectively the voltage U6 and U5 with the logical levels "1" and logical "0", submitted respectively to the J-input of the trigger 7 and the first output capacitor 18. Negative differential output voltage U5 sensor 2 at the output of the differentiator 5 is formed pulse voltage U8 level logic "0". Under the action of this pulse starts the one-shot 17 and forming at its output pulse voltage U9 with logical level "1"which is fed to control inputs of the keys 15, 16. In the last closed at the time of the positive pulse voltage U9 output the one-shot 17. During the closed state of the key 16, the voltage U6 level with the eat logic "1" to the J-input of the trigger 7 fails, and to the J input, a K input continue to be present voltage levels logic "0". As a result, the trigger 7 stores the previous state for the closed state of the keys 15, 16. The decay of the pulse voltage U9 the one-shot 17 keys 15, 16 are opened and the second output of the sensor 2 to the J-input of the trigger 7 is energized U6 with logical level "1". As to the J input and the K input of the trigger 7 is set accordingly the voltage U6 and U4 with the logical levels "1" and logical "0"on the leading edge of the next clock pulse generator 36 he switches to another state in which to its inverse and direct outputs are respectively the voltage U10 and U11 levels logic "0" and logical "1". After that, the led unit 9 display goes out and the led unit 10 of the display flashes. At this point, with the trigger output 7 via the output terminal 12 is energized U11 with logical level "1" to the control winding (figure 1 it is not shown) the solenoid actuator of the pump installation. In the pump unit turns on and starts refilling the tank 35 liquid 23. When the liquid level 23 begins to climb up the tank 35 to a sensitive element of the sensor 1.

On this first cycle control and regulation of liquid level ends and begins the Torah cycle device according to the algorithm, described above in the first cycle of operation of the device. The second cycle of operation of the device shown in Fig since the expiration of the pulse voltage U9, located in the time interval t4-t5and until the end of the pulse voltage U9 following the time t8(see Fig).

Thus, the overall algorithm of the device maintain the liquid level at its fixed height with disturbing its surface can be represented as follows.

In the initial state, when the tank 35, the liquid 23 is absent, the sensitive elements of sensors 1, 2 are in the drained condition. At the time of the power device turns on the pump unit and starts filling the tank 35 liquid 23. Its level begins to rise up to a sensitive element of the sensor 2. During the washing of the sensing element of the sensor 2, the device continues to be filled with the liquid 23. At the time of washing the detector element 1 occurs with a delay determined by the pulse duration of the output voltage of the one-shot 17, disconnect the pump, and the flow of the liquid in the tank 35 is stopped. From this point there is a "capture" probe 1 liquid level 23, and begins the process of control and regulation of liquid level 23 on the e fixed height within the width of the zone regulation, defined by the distance between the geometric centers of the surfaces of the sensitive elements of sensors 1, 2. Next, the fluid flow 23 and its level begins to descend to a sensitive element of the sensor 2. At the time of drainage of the sensor cell 2 occurs with a delay determined by the pulse duration of the output voltage of the one-shot 17, turning on the pump unit and the replenishment tank 35 liquid 23. As a result, the liquid level 23 begins to rise up to a sensitive element of the sensor 1. At the time of washing the detector element 1 is delayed disconnection of the pump unit. When the flow rate of the liquid 23 in the tank 35 level starts to fall down. As a result, after a certain period of time is draining detector element 1, and then the sensing element of the sensor 2, after which the pump unit is switched on and there is a replenishment of the reservoir fluid. The liquid level begins to rise up, and then the cycle control and regulation of fluid between the sensitive elements of sensors 1, 2 is repeated. Moreover, the control cycles of the liquid 23 will continue to repeat until, until-off voltage of the device. Process control and maintain the level of liquid is 23 at a fixed height is carried out with precision regulation, equal (±AL:2L)×100%,

where ΔL is the width of the zones of regulation (distance between the geometric centers of the surfaces of the sensitive elements of sensors 1, 2 for horizontal or vertical mounting devices);

L is the nominal value of the height level of the controlled fluid 23 that is installed in the middle of the width of the zone of control (see figure 10 - Fig).

For example, for a given nominal value of the height level of the controlled fluid L=2 m and the width of the zone regulation ΔL=16 cm accuracy regulation (maintaining) the liquid level at this height is 4%.

2. The operation of the device in the mode of maintaining the liquid level at its fixed height with a calm liquid surface.

This mode can be used vertical or horizontal mounting of the device in open and closed tanks, walls can be made of conductive or dielectric material. When this device is installed at the facility operation in vertical or horizontal positions (see figure 10 - Fig) to control the conductive and non conductive liquids.

In this mode, the terminals 6 and 19 are opened and the terminal 20 is connected to terminal 13. Thus the output of the differentiator 5 is disconnected from the input of one-shot 17 and the second output capacitor 18, and the slave is the device in this mode, the differentiator 5, the capacitor 18, the one-shot 17, the keys 15, 16 have no effect (see figure 1). And in this case you use the first and second outputs of the device, and its third and fourth outputs to control external loads are not involved.

When applying at time t0on the device with a power supply unit 8 is the charge of the capacitor through the transition emitter-base of transistor n-p-n type (see figure 1). When this transistor unit 8 is opened and through its transition collector-emitter served on the S-input of the trigger 7, the pulse voltage U1 with logical level "0" (see Fig). As a result, the first and second outputs of the trigger 7 and the first and second output terminals 11 and 12 are set voltage U10 and U11 levels logic "0" and logic "1" respectively. In this case the led unit 9 display goes out and the led unit 10 of the display flashes. After the end of charge of the capacitor unit 8 its transistor is closed and further on the operation of the circuit device is not affected, as its base through a resistor connected to a common ground circuit device. Then the output of block 8 and the S-input of the trigger 7 is set to the voltage U1 with logical level "1". At the output of the differentiator 5 through resistor sets the voltage U8 with logical level "1". At the same time at the output of the one-shot 17 octanal the indication of the voltage U9 level logic "0". In the initial state in the tank 35 is controlled fluid 23 is missing and sensitive elements of sensors 1, 2 are in the drained condition.

However, the sensors 1, 2 are switched in such state, in which their first and second outputs are set to the voltage U2, U5 and U3, U6, respectively, with the logical levels "0" and logical "1". As a result, the outputs of the repeaters 3 and 4 are, respectively, the voltage U4 and U7 with logical levels "0"and the input of the differentiator 5 - voltage U3 with logical level "1". As to the J input and the K input of the trigger 7 from the second sensor output 2 and output of the repeater 3 set voltage U6 and U4, respectively, with levels logic "1" and logical "0", then the combination of logic signals to the J input and the K input of the trigger 7 on the leading edge of the clock pulse generator 36 switching it to another state does not occur, but only by its initial state, in which its inverse and direct outputs have voltage U10 and U11 levels logic "0" and logical "1" accordingly. After that, the led unit 9 display continues to be in a suppressed state, and the led unit 10 display - illuminated condition. With direct trigger output 7 via the output terminal 12 is energized U11 with logical level "1" n the control winding of the inclusion (figure 1 it is not shown) of the electromagnetic contactor of the pump installation. Then begins filling the tank 35 liquid 23 and controlled by the liquid level 23 in the tank 35 begins to climb up.

After a certain period of time at time t1(see Fig) is flushed with liquid 23 of the sensing element of the sensor 2. The result is a switch sensor 2 in this state, which at its second output is the voltage U6 with logical level "0"which is supplied to the J-input of the trigger 7, and at its first output and the output of the repeater 4, respectively, the voltage U5 and U7 with levels logic "1". At the J input and the K input of the trigger 7 from the second sensor output 2 and output of the repeater 3 set voltage, respectively U6 and U4 levels logic "0"when the trigger 7 continues to maintain its previous state, as this combination of logic signals to the J input and the K input of the trigger 7 on the leading edge of the next clock pulse generator 36 switching it to another state does not occur. As a result, in the moment of time t1the process of filling the tank 35 liquid 23.

At time t2the sensor 1 is washed by the controlled fluid 23. As a result, the sensor 1 is switched into a state in which the first output is the voltage U2 urovnem logical "1", which is input to the repeater 3 and the second output - voltage U3 with logical level "0", which is input to the differentiator 5. This negative differential voltage U3 at the output of the differentiator 5 is formed of a pulse voltage U8 level logic "0", but the input of the one-shot 17 this pulse does not pass, because the terminals 6 and 19 are in the open state. So start the one-shot 17 is not happening and its output continues to be the voltage U9 level logic "0". However, at the output of the repeater 3 and the input of the trigger 7 is set to the voltage U4 with logical level "1". As to the J input and the K input of the trigger 7 is set accordingly the voltage U6 and U4 with logical levels "0" and logical "1", then this combination of logic signals to the J input and the K input of the trigger 7 on the leading edge of the clock pulse generator 36 he switches to this state when its inverse and direct outputs are respectively the voltage U10 and U11 levels logic "1" and logical "0". After that, the led unit 9 display flashes and the led unit 10 of the display goes out. At this point, with the inverted output of the trigger 7 through the output terminal 11 of the voltage U10 with logical level "1" to the control winding (figure 1 it is not until the Ana) off of the electromagnetic contactor of the pump installation. In the pump unit is switched off and the reservoir 35 fluid 23 at time t2ceases. Then the scheme of arrangement and position of the level of the controlled fluid 23 can be in this state until, until the start of its consumption.

After a time t2for example, begins the flow of the controlled fluid 23. After a certain period of time at time t3is the drainage of the detector element 1. When this occurs, the switch sensor 1 in another state, which at its first output and at the input of the repeater 3 is set to the voltage U2 with logical level "0". As a result, the output of the repeater 3 and the input of the trigger 7 is set to the voltage U4 with logical level "0". As to the J input and the K input of the trigger 7 is set accordingly the voltage U6 and U4 with logical levels "0", then the combination of logic signals to the J input and the K input of the trigger 7 on the leading edge of the next clock pulse generator 36 switching it to another state does not occur, and he continues to keep the previous state in which its inverse and direct the output voltage is set accordingly U10 and U11 levels logic "1" and logical "0". As a result, the fluid flow 23 continues and continues in order to embark in the vessel 35 down to a sensitive element of the sensor 2.

After a certain period of time at time t4is the drainage of the sensing element of the sensor 2. The result is a switch sensor 2 in another state, in which its second and first outputs are respectively the voltage U6 and U5 with the logical levels "1" and logical "0", submitted respectively to the J-input of the trigger 7 and the first output capacitor 18, the input of the repeater 4, the output of which sets the voltage U7 with logical level "0". Negative differential output voltage U5 sensor 2 of the forming voltage pulse U8 differentiator 5 and, therefore, run the one-shot 17, as terminal 6 and 19 are in the open state. Therefore, forming the output of one-shot 17 pulse voltage U9 level logic "1" does not occur, and its output continues to be the voltage U9 level logic "0". As at the J input and the K input of the trigger 7 is set accordingly the voltage U6 and U4 with the logical levels "1" and logical "0"on the leading edge of the next clock pulse generator 36, the trigger 7 is switched to another state in which to its inverse and direct outputs are respectively the voltage U10 and U11 levels logic "0" and logical "1". Then svetodiodnaja 9 display goes out, and the led unit 10 of the display flashes. At this point, with direct trigger output 7 via the output terminal 12 is energized U11 with logical level "1" to the control winding (figure 1 it is not shown) the solenoid actuator of the pump installation. In the pump unit turns on and starts refilling the tank 35 liquid 23. The level of the controlled fluid 23 begins to rise up to a sensitive element of the sensor 1. On this first cycle control and regulation of liquid level begins and ends with the second cycle of operation of the device according to the algorithm described above in the first cycle of operation of the device. The second cycle of operation of the device shown in Fig, starting from time t4and before time t8.

General algorithm of the device in the mode of maintaining the liquid level at its fixed height with a calm its surface is similar to the algorithm of its operation, maintain the liquid level at its fixed height with disturbing its surface, as described above. The difference algorithm of operation of the device in this mode is only in the absence of delay on and off the pump in moments drainage sensitive element of the sensor 2 and the washer detector element 1, respectively, as the mode terminal 6 and 19 of the device is disabled. The process of monitoring and maintaining the liquid level in this mode is performed with the same accuracy as the control mode for maintaining the liquid level at a fixed height with disturbing its surface described above.

3. The operation mode of the detector at the top level. In this mode, terminal 6, 19 are in the open state, and the terminal 20 is disconnected from terminals 13, i.e., all the conclusions of the programming is in a disabled state. Thus the output of the differentiator 5 is disconnected from the input of one-shot 17 and the second output capacitor 18, and the operation of the device in this mode, the differentiator 5, the capacitor 18, the one-shot 17, the keys 15, 16, the trigger 7 have no effect. Moreover, in this case, a third output, and its first, second and fourth outputs to control external loads are not involved. The device 34 in this case functions as a detector of the upper liquid level. The device allows for vertical and horizontal mounting on the object operation (see figure 10 - Fig) to control the conductive and non conductive liquids. Operation in this mode is described by the diagrams U2 and U4 shown in Fig. The device in this mode of operation can be set with another device operating as sist the mA control and regulation of liquid level with anxious or relaxed its surface, and be used as an emergency signaling device, the upper limit of the working liquid level 23 in the tank 35 in case of emergency overflow tank 35 is controlled by the liquid 23.

4. The operation mode of the detector lower level. In this mode, terminal 6, 19 are in the open state, and the terminal 20 is disconnected from terminals 13, i.e., all the conclusions of the programming is in a disabled state. Thus the output of the differentiator 5 is disconnected from the input of one-shot 17 and the second output capacitor 18, and the operation of the device in this mode, the differentiator 5, the capacitor 18, the one-shot 17, the keys 15, 16, the trigger 7 have no effect. And in this case you use the fourth output of the device, and its first, second and third outputs to control external loads are not involved. In this case, the device functions as a detector of the lower liquid level. The device allows for vertical and horizontal mounting on the object operation (see figure 10 - Fig) to control the conductive and non conductive liquids. Operation in this mode is described by the diagrams U5 and U7, shown in Fig. The device in this mode of operation can be set with another device operating as a system of control and regulation of liquid level with Usmanova the Noi or relaxed its surface, and be used as an emergency alarm lower limit of the working liquid level 23 in the tank 35 in case of emergency draining of the tank 35 is controlled by the liquid.

In addition, the two devices acting as detectors of the upper and lower levels can also be set with another device operating as a system of control and regulation of liquid level with anxious or relaxed its surface, and be used at the same time as emergency alarms upper and lower limit of the working fluid 23 in the tank 35 in case of emergency overflow liquid 23 or draining of the tank 35, respectively.

Thus, the proposed device in comparison with analogues has a significant advantage - extended functionality by increasing the range of controlled fluid and the number of modes, and is multifunctional, because the device programmability functionality can be used both as systems of control and regulation, and as level switches liquid media.

In addition, the execution circuit device using the semiconductor and (or) hybrid technology chipset allows significant is about to reduce its overall dimensions, the consumption and improve performance.

This functionality provides in comparison with analogues flexibility of the proposed device in operation with minimum cost indices.

1. Device control and regulation of liquid level, containing the first and second fluid-level sensor, the trigger, the first and second repeaters, the inputs of which are connected to the first outputs of the first and second fluid-level sensor, respectively, and the outputs are respectively the third and fourth outputs of the device, the differentiator, the output of which is the first output programming the unit in its original state, the output of which is connected to the S input of the trigger, the first display unit, the second display unit, an input connected to the direct output of the trigger, which is the second output device, characterized in that it introduced the capacitor the first output of which is connected to the first output of the second liquid level sensor, one-shot, an input connected to the second output capacitor, and the point of connection of its input and the second output capacitor is the second output programming, the first and second keys voltage, the first conclusions which are connected respectively to the input and the J-input of a trigger, the second in the water - to the common ground circuit device, the control inputs to the output of one-shot, a clock generator, the output of which is connected with input trigger, and the second output of the first liquid level sensor connected to the input of the differentiator, the second output of the second sensor with the J-input of the trigger, the inverted output of which is the first output device and the first display unit is connected to the inverse output of the trigger, the point of connection To the input and first output of the first key voltage is the third output programming, in connection with which the third output device and the circuit between the first and second conclusions programming the device is transformed into the system of control and regulation of liquid level, providing its mode of maintaining the liquid level at a fixed height with disturbing its surface, using the first and second outputs of the device, when the open state of the first and second findings programming and closed between a third output programming and third output devices in the system of control and regulation of liquid level, providing its mode of maintaining the liquid level at a fixed height with a calm its surface, using the first and second outputs of the device, and when otklyuchen the x findings programming in the switch control upper liquid level using the third output or lower the liquid level using the fourth output device.

2. The device according to claim 1, characterized in that the fluid-level sensor made of optical and optical window sensors, liquid level, aimed in different directions, are mounted with a gap between them on different parallel between the planes of the outer side surfaces of the device along a straight line drawn between the geometric centers of the optical window sensors liquid level in the plane located at an angle to the axis of symmetry of the device, while the emitters and photodetectors with facing different sides of the optical Windows of the fluid-level sensor is formed with two outer lateral sides of the device, the sensing element of the device, and aimed in different directions of the surface their optical Windows formed on the two external lateral sides of the device its sensitive surface that interacts with the controlled fluid.

3. The device according to claim 1, characterized in that the fluid-level sensor is performed optically, and one of the ends of the device, the surface of which has an optical window sensors, liquid level, is the working end to the pus device, which is made with two parallel between the planes of the lower and upper steps, the planes of which on the outer side of the device body is installed with a gap between an optical window, respectively, the first and second fluid-level sensor along a straight line drawn through the geometric centers of the optical window sensors liquid level in the plane located at an angle to the axis of symmetry of the device, and installing on the outer side of the device body of the optical Windows of the first and second fluid-level sensor on the planes respectively of the lower and upper steps of the working end of the device and the gap between their optical Windows always provides when the unit is in the original the state controlled washing liquid first optical window of the second liquid level sensor when the rise of its level in the upward direction to the optical Windows of the fluid-level sensor as in both vertical and horizontal mounting device, while the emitters and photodetectors with optical Windows sensors, liquid level, directed to one side, forming the outer side of the device at two levels working end of the device the sensing element of the device and directed to one of the parties is the surface of the optical window sensors liquid level is formed on the outer side of the device at two levels working end of the device its sensitive surface, interacting with the controlled fluid.

4. The device according to claim 1, characterized in that the first and second fluid-level sensor capacitive made, and their capacitive sensitive elements in the form of conductive plates of any geometrical shape, placed in a common protective insulating sheath, mounted with a gap between their end surfaces in the same plane along a straight line drawn through the geometric centers of one of the two flat surfaces of the capacitive sensitive elements of sensors, liquid level, oriented in one direction towards one of the two external lateral surfaces of General protective insulating sheath at an angle to the axis of symmetry of the device, both a flat surface capacitive sensors level sensors fluid together with areas, the overall protective insulating sheath above these flat surfaces and closely adjacent thereto, forming two outer lateral sides of a common protective insulating sheath sensitive element of the device, and the external lateral surfaces of General protective insulating sheath placed over both flat surfaces of the capacitive sensors level sensors liquid form on the two external lateral sides of the common protective of the air sheath sensitive surface of the device, interacting with the controlled fluid, and the end of the overall protective insulating sheath, near which has capacitive sensitive elements of sensors, liquid level, is the working end of the device, and the installation of the capacitive sensor element of the second liquid level sensor closer than capacitive sensing element of the first liquid level sensor, to the end of the overall protective insulating sheath, which is the working end of the device, and the gap between the end surfaces of the capacitive sensitive elements of sensors liquid level always provides when the unit is in original condition controlled washing liquid first capacitive sensing element of the second liquid level sensor when the rise of its level in the upward direction to capacitive sensitive elements of sensors liquid level as when both vertical and horizontal mounting device.

5. The device according to claim 1, characterized in that the capacitive sensitive elements of the fluid-level sensor is installed with a gap between their end surfaces on different parallel between the planes of the inner side surfaces of the device along a straight line drawn through the geometric centers of the flat surfaces capacitance is the shaft sensitive elements of sensors, liquid level, oriented in different directions and closely adjacent to the inner side surfaces of the device, in a plane located at an angle to the axis of symmetry of the device, and a flat surface capacitive sensitive elements of sensors, liquid level, oriented in different directions and closely adjacent to the inner side surfaces of the device, together with areas of the side walls of the device, located above these flat surfaces, forming two outer lateral sides of the device, the sensing element of the device, and the external lateral surfaces of the device, located above the flat surfaces of the capacitive sensitive elements of sensors, liquid level, oriented in different directions, and closely adjacent to the inner side surfaces of the device, is formed on the two external lateral sides of the device sensitive surface of the device, interacting with the controlled fluid, with one of the ends of the device, near which has capacitive sensitive elements of sensors, liquid level, is the working end of the device.

6. The device according to claim 1, wherein one of the ends of the device, on the inner surface to the th set of capacitive sensitive elements of sensors, liquid level, is the working end of the device, which is made with two parallel between the planes of the lower and upper steps, the planes of which on the inner side of the device installed capacitive sensitive elements, respectively, the first and second fluid-level sensor along a straight line drawn through the geometric centers of the surfaces of the capacitive sensitive elements of sensors, liquid level, oriented in one direction in the direction of the outer surface of the working end of the device, in a plane located at an angle to the axis of symmetry of the device, and a capacitive sensitive elements of the fluid-level sensor is installed with a gap between their end surfaces, with a flat surface capacitive sensitive elements of the fluid-level sensor, oriented in one direction in the direction of the outer surface of the working end of the device, together with the areas of the walls of the working end of the device, located above these flat surfaces formed on the outer side of the device at two levels working end of the device the sensing element of the device, and the outer surface of the working end of the device, located above the flat surfaces capacitance is the shaft sensitive elements of sensors, liquid level, oriented in one direction in the direction of the outer surface of the working end of the device, is formed on two levels working end of the device sensitive surface of the device, interacting with the controlled fluid, however, the installation on the inner side of the device capacitive sensing element of the second liquid level sensor in the plane of the upper stage working end of the device, and the capacitive sensor element of the first liquid level sensor is in the plane of the lower step and the gap between the end surfaces of the capacitive sensitive elements of sensors liquid level always provides when the unit is in original condition controlled washing liquid first capacitive sensing element of the second liquid level sensor when the rise of its level in the upward direction to the capacitive sensitive elements of sensors liquid level as when both vertical and horizontal mounting device.

7. The device according to claim 1, characterized in that the first and second fluid-level sensor is performed optically, and their optical window mounted with a gap between each other in the same plane on the outer side surface of the device body along a straight line drawn through the geo is etnicheskie the centers of the optical window sensors liquid level at an angle to the axis of symmetry of the device, and one of the ends of the device, near which has an optical window sensors, liquid level, is the working end of the device, however, the installation of optical Windows of the second liquid level sensor closer than the optical Windows of the first liquid level sensor, to the working end of the device and the gap between the optical Windows of the fluid-level sensor always provides when the unit is in original condition controlled washing liquid first optical window of the second liquid level sensor when the rise of its level in the upward direction to the optical Windows of the fluid-level sensor as in both vertical and horizontal mounting device, while the emitters and photodetectors with directional one-way optical Windows of the fluid-level sensor is formed on one outer side of the device the sensing element of the device and directed to one side surface of the optical window sensors liquid level is formed on one outer side of the device its sensitive surface that interacts with the controlled fluid.



 

Same patents:

FIELD: physics.

SUBSTANCE: system (10) for filling a drinking container (20) with a beverage, having a first measuring device (12a; 12) which determines the maximum filling level (21) of the drinking container (20), which is defined by the top edge (21) of the drinking container (20); the measuring device (12a, 12, 12b) at least periodically determines the actual filling level (23), where in the system (10), a control means (13) automatically stops the filling level once the actual filling level (23) essentially matches the set filling level (22), wherein the set filling level (22) is determined from a predetermined or individually set distance (24) to the maximum filling level (21), wherein the first measuring device (12a; 12; 12b) continuously determines the actual filling level (23); the measuring device is in form of a chamber with an electronic sample recognition system.

EFFECT: cheap and reliable filling of vessels of any height.

7 cl, 2 dwg

FIELD: transport, distribution.

SUBSTANCE: proposed method comprises filling the tank with fluid and semi-fluid mixes, setting volumetric portion of mixes and draining said tank in dispensing said mixes. Mix level capacitive transducer is arranged inside tank along its height to be filled with mixes at a time with said tank. Structural characteristics of transducer and electrical performances depending thereon are invariable over its height in empty state of both transducer and tank. Maximum and minimum tank mix levels are set by appropriate transducers. Tank filling is terminated when mix level reaches that of mix top level transducer and started when it reaches that of mix bottom level transducer. Electric oscillation signal is generated at capacitive transducer. Electric oscillation signal amplitude is measured at capacitive transducer. Mix level signal is generated subject to measured electric oscillation signal amplitude at capacitive transducer. With top level transducer level reached by mix level, product of height from tolerable top to bottom mix levels and said electric oscillation amplitude is determined for said time interval. Mix level signal is corrected in relation to measured electric oscillation signal amplitude at capacitative transducer. With tank drained at beginning of another proportioning cycle, initial mix level generated signal is determined. Final proportioning mix level signal is defined as difference between mix level initial signal and quotient of mix volumetric portion and tank horizontal section inner area. Definite final level signal is compared with corrected mix level signal to terminate volumetric proportioning of mixes if said signals are equal. Proposed device comprises tank, mix level capacitative transducer, mix top and bottom level transducers, electric oscillation generator, signal transducer, pump and shutter control unit, pump and shutter assemblies and mix measured level indicator. Output of said generator is connected with capacitative transducer and signal transducer input. Mix top level transducer output is connected to first input of pump and shutter control unit with its second input and outputs connected to mix top level transducer output and appropriate inputs of pump and shutter assembly. Proposed device comprises also selector, setter of top measured mix level signal, mix portion and next mix proportioning moment start, computer and comparator. Signal transducer output is connected to computer first input and selector first signal input. To selector second control input connected is connection of mix top level transducer output, pump and shutter control unit first input and comparator output. Selector output is connected with computer second input. Computer third and fourth inputs are connected to first and second outputs of top measured mix level and next proportioning moment setting unit. Computer first input is connected to mix measured level indicator input and comparator first inverting input while its second output is connected to comparator second non-inverting input.

EFFECT: higher accuracy of control and proportioning.

2 cl, 3 dwg

FIELD: physics; control.

SUBSTANCE: invention relates to automation of manufacturing processes in machine building and is meant for automating technological processes related to monitoring and controlling liquid media. The device is made in form of two functional assemblies and has three terminals for programming its functionalities and four outputs. The device has two level sensors, two multivibrators, capacitors, two detectors, two sensitivity controllers, two threshold elements, a differentiator, a JK flip-flop, a unit for establishing initial state, two repeaters and two display units. When the first and second programming terminals are closed and when the third programming terminal is connected to the third output, the device is transformed into a system for monitoring and controlling liquid level with its excited surface using the first and second outputs, which provides the mode for monitoring and maintaining the liquid level at a fixed height and the mode for filling and emptying the reservoir. When the first and second programming terminals are open and the third programming terminal is connected to the third output, the device is transformed into a system for monitoring and controlling liquid with its calm surface in the mode for monitoring and maintaining the liquid level at a fixed height and in the mode for filling and emptying the reservoir. The device provides vertical, horizontal and combined (vertical mounting of one and horizontal mounting of the other functional assembly) mounting methods.

EFFECT: increased functionalities of the device and wider range of controlled loads and mounting methods.

6 dwg

FIELD: machine building.

SUBSTANCE: invention relates to field of computer-aided manufacturing in machine building and is provided for workflow automation, related to control and regulation of liquid mediums. Device is structurally implemented in the form of one functional assembly, including conductometric sensor of liquid level, connected to sensitivity control, detectors, connected to second lead sensitivity control, threshold elements, connected to detectors, differentiator, unit for placement into initial state, JK- trigger, monostable circuit, replicator and indicator units. Additionally device contains three programming leads of its functional capabilities and four outlets. At closed first and second programming leads and connection of the third programming lead to third device outlet it is transformed into control and regulation system of liquid level with its agitated surface and usage of the first and the second outlets of device, providing verification and liquid level control mode at fixed height. At opened first and second programming leads and connected to each other third programming lead and third outlet of the device it is transformed into monitoring and regulation system of liquid with its smooth surface in the mode of monitoring and keeping of liquid level at its fixed height. At disconnected programming leads device is transformed into warning assembly of monitoring of top level of liquid with usage of the third outlet of device or warning assembly of monitoring of bottom level of liquid with usage of fourth outlet of device. Device provides vertical and horizontal methods of erection.

EFFECT: expansion of functional capabilities of the device and increasing of nomenclature of controllable loads and methods of its erection and also improvement of operational performance.

5 dwg

FIELD: machine building.

SUBSTANCE: invention relates to field of computer-aided manufacturing in machine building and is provided for workflow automation, related to control and regulation of liquid mediums. Device is structurally implemented in the form of two functional assemblies and allows two programming leads of functional capabilities and four outlets. At closed programming leads device is transformed into monitoring and regulation system of liquid level with usage of the first and the second outlets of device, providing monitoring mode and keeping of liquid level at fixed height and mode of filling and emptying of a reservoir with liquids. At open programming leads device is transformed into set of level control of top and bottom levels of controlled liquid of conducted type, outlets of which are correspondingly the third and the fourth outlets of the device. Device provides vertical, horizontal and complex (vertical installation of one and horizontal installation of other functional assembly) methods of installation. Device provides setting of control accuracy of liquid level in control mode and keeping of liquid level at its fixed height. Invention provides control of loads in the form of electromagnetic relay, two windings of contactor starter and outlets of logic elements.

EFFECT: extended capabilities of device by means of providing of regulation of liquid flows level at fixed height with ability of programming of its functional capabilities and nomenclature increasing of controllable loads and methods of its installation.

5 dwg

FIELD: physics, measuring.

SUBSTANCE: system contains a consistently joined comparison device - the adder, a digital controller of the fluid flux rate, object the regulations sweepped by a feedback, digital correcting proportional and integrated controllers, comparison devices, the block of insert of a correcting proportional controller and the filter of low frequencies. Current values of level of a fluid in capacity-collection from an exit of object of regulation arrive on an inlet of the filter of low frequencies and on an inlet of the block of insert of a correcting proportional controller.

EFFECT: increase of dynamic accuracy of regulation of the rate of flux of a fluid on level in capacity-collection in the conditions of activity of various perturbations at the expense of digital correction under the integrated law of the assignment to a controller of the rate of flux of a fluid on the filtered (rounded) values of level and insert of proportional correction making in algorithm at an exit of level from field of the "smooth" regulation.

1 dwg

The invention relates to the field of automatic control and can be used, for example, in the gas, chemical and oil industry, as well as in household appliances

The invention relates to the field of automatic control systems

The invention relates to regulators of various process parameters and can be used in the oil and Petro-chemical industry to improve the quality of regulation phases in a sealed flow-through tanks

The invention relates to the technical equipment used in the systems of loading and unloading of volatile and corrosive liquids in containers and rail cars

FIELD: machine building.

SUBSTANCE: device includes the first and the second optic or capacity sensors of liquid level, a control unit, two assemblies of a detachable connection, four programming outputs of its functional capabilities and two outputs. When the first and the second programming outputs are closed and the third programming output is connected to the fourth programming output, the device is transformed to a liquid level monitoring and control system with its wavy surface providing the tank with a liquid filling and emptying mode and a mode of control and supporting of liquid level at its fixed height. When the first and the second programming outputs are open and the third and the fourth programming outputs are connected to each other, the device is transformed to a liquid level monitoring and control system in the tank with its smooth surface providing the tank with a liquid filling and emptying mode and a mode of control and supporting of liquid level at its fixed height. When the control unit is disconnected from liquid level sensors by means of assemblies of detachable connection, the device is transformed to a set of control annunciators of upper liquid level and lower liquid level, which are represented by the first and the second liquid level sensors respectively. The device provides vertical and horizontal erection modes, as well as a combined erection method when erection of the first (second) liquid level sensor is performed using the vertical method, and erection of the second (first) liquid level sensor is performed using the horizontal method.

EFFECT: improving liquid dosing accuracy, enlarging functional capabilities of the device and improving its economy at operation.

6 dwg

FIELD: measurement equipment.

SUBSTANCE: sine voltage is shaped on a capacitance level sensor; complex current is measured through a dry capacitance level sensor and complex current is measured through the capacitance level sensor being filled. The first equivalent circuit of the capacitance level sensor is set, which consists of parallel connected electric capacity and active resistance, formation of sine voltage on the capacitance level sensor is performed at two frequencies; after that, series measurement of complex current through dry level sensor and a reference on each of two frequencies is performed; at that, measurement results are fixed; electric capacity of the dry level sensor is determined and fixed; increment of electric capacity of the capacitance level sensor is calculated and fixed at its full submersion in dielectric substance. Relative filling of capacitance level sensor with dielectric substance is determined as difference of values of electric capacity of the capacitance level sensor being filled and electric capacity of dry capacitance level sensor, which is referred to increment of electric capacity of the capacitance level sensor fully submerged into dielectric substance. The second equivalent circuit of capacitance level sensor is set, which consists of in-series connected electric capacity and active resistance, and as per complex currents measured and fixed before through the capacitive level sensor and the reference on each of two specified frequencies there determined and fixed is in-series connected electric resistance of chains of the level sensor, as per which reliability of determination of dielectric substance level is evaluated.

EFFECT: excluding measurement results of the level, which occur as a result of failure in a long communication line between a sensor and measuring equipment.

4 dwg

FIELD: measurement equipment.

SUBSTANCE: method to define height of a loose material layer, moved in an air slide, consists in the fact that a control material is exposed to a magnetic field, the material is probed with an electromagnetic wave, and the electromagnetic wave passed through the material layer is received. At the same time intensity of the electromagnet wave that passes via the material layer is measured, and on the basis of the measured value of this wave intensity, the height of the material layer is defined in the air slide.

EFFECT: simplified procedure of measurement of loose material layer height in an air slide.

1 dwg

FIELD: electrical engineering.

SUBSTANCE: invention is related to rod-like electric heating element used in particular in the device for filling level control in a reservoir, for liquid, in particular in nuclear plant reactor vessel containing shell and at least one electric conductor in conductive contact with the shell (16). The electric conductor has at least two sections of the conductor with different electric properties and/or thermal conductivity.

EFFECT: more accurate producibility of values set structurally.

13 cl, 3 dwg

FIELD: measurement equipment.

SUBSTANCE: device comprises a generator of a high-frequency signal, a resistor, a level sensor, at least one pair - the first and second electrodes of a conducting material, installed at the specified distance d from each other in a holder from a dielectric material, a diode, a low pass filter (LPF), a unit of potential shift and a unit of output signal generation. At the same time the high-frequency signal generator is connected with the serially connected resistor, semiconductor diode, LPF, the unit of potential shift and the unit of output signal generation. The output from the upper end of the first electrode is connected to the common output of the resistor and the semiconductor diode, the output from the upper end of the second electrode - to an earth bus, and lower ends of both electrodes are submerged below the level of the measured water surface.

EFFECT: provision of higher resolving capacity by time, frequency and amplitude of measured physical values, higher functional flexibility, simplicity of realisation, increased reliability.

11 cl, 3 dwg

FIELD: measurement equipment.

SUBSTANCE: water stage gauge for watercourses of a mountain and piedmont area includes a canal or a river, a water level recorder. The water state gauge is also equipped with a vertical pipe separated into two unequal parts with a vertical partition, and a vertical wall of the first part is equipped with upward inclined water-receiving slots-windows opposite to the flow. At the same time the pipe on top is equipped with a chamber with a recorder and communicates two unequal parts via a float and a stop element installed in a socket, built into the second part of the vertical pipe, communicated with the canal by calibrated openings, and is made in the form of two valves connected to each other as capable of axial displacement relative to each other. Besides, one of the valves is made in the form of a tilted cone with a perforated base and an axial hole in the cone top, through which one end of the guide stem is pulled, being rigidly connected at the bottom with the other valve in the form of a conical plug, and the other end of the stem is placed in the cavity of the second part of the pipe. At the same time the valve in the form of the conical plug in the upper part is additionally equipped with a guide stem stretching via a hole into the base of the tilted cone in its centre and connected by the other end with the float by means of a flexible drive.

EFFECT: increased accuracy and reliability of flow measurement of nonpressure flows with rapid flow regime.

3 dwg

FIELD: measurement equipment.

SUBSTANCE: wave recorder includes a piezoceramic emitter of sendings of carrier frequency, which are shaped by a heavy-pulse generator built on the basis of two SMD switches of complementary conductivity type and series resonance circuit. Acoustic sendings reflected from surface are received by reversible piezoceramic emitter, converted to digital form and processed by a microprocessor analyser provided with a correlation processing unit.

EFFECT: reduction of power consumption and weight and dimensional parameters of the instrument.

2 cl, 1 dwg

FIELD: instrumentation.

SUBSTANCE: proposed method consists in breaking down power output in operation at load and idling into intervals defined experimentally. Then, fuel output at each interval of power output is calculated by appropriate formula. Obtained fuel consumption is compared to actual magnitude. This allows comparing actual consumption with design consumption without breakdown into power output and idling. Design total fuel consumption results from adding design fuel consumption and that in idling at preset time interval.

EFFECT: higher accuracy of determination.

1 dwg

FIELD: instrumentation.

SUBSTANCE: proposed system comprises long part composed of coaxial tube with axial bore, coaxial branch and transducer including transmitter to generate and transmit electromagnetic excitation pulse to pass in said long part and branch. Besides it has receiver to receive reflected pulses wherein near end of long part is connected with distal end of rod to make waveguide for said electromagnetic pulse from transducer. Note here that aforesaid branch is a dielectric of known impedance.

EFFECT: accurate, reliable and safe instrument and method.

21 cl, 8 dwg

FIELD: measurement equipment.

SUBSTANCE: device for determining the layer height of the substance flowing via an aeroflow conveyor includes an emission source connected at its outlet to emission input element, emission output element connected to the input of polarisation plane turning angle metre, and winding. The device includes a converter, an amplifier, an actuator and a power supply unit. Output of polarisation plane turning angle metre is connected to the converter input, the output of which is connected to the amplifier input. The amplifier output is connected to the first arm of the actuator; the second arm of the actuator is connected to the first arm of the power supply unit, the second arm of which is connected to the beginning of winding; end of winding is connected to the third arm of the actuator.

EFFECT: reduction of power consumption.

1 dwg

FIELD: measurement technology.

SUBSTANCE: method can be used for measuring level of liquid and loose materials as well as for measuring distances. Difference frequency spectrum is calculated and its shape is compared with shape of reference spectrum. Reference spectrum consists of permanent and variable parts which are achieved during calibration at working place. Parameters of permanent part of reference spectrum are defined by design of reservoir and kept permanent during process of measurement. Parameters of variable part of reference spectrum are subject to change till achieving minimum of difference measure for measured and reference spectra and are used for calculating distances. Reference spectrum can be formed by means of two ways. According to the first way reference spectrum is calculated from formed reference signal which has to be the sum of partial signals with parameters corresponding to reflections from members of constructions and from measured signal level. Parameters of signals that correspond to reflection from measured level are changed when conducting measurements till achieving minimum of difference measure. According to the second way during process of calibration the permanent and variable parts of spectrum of measured signal are memorized and the measured signal is used as a reference one. Value of measured frequency is the frequency at which difference measure is minimal. For both variants of forming reference spectrum the permanent and variable parts of reference spectrum do not come into interaction.

EFFECT: improved precision of measurement at the presence of background.

8 cl, 4 dwg

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