Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (G01N27)

G   Physics(391163)
G01   easuring; testing(233827)
G01N27                 Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (g01n0003000000-g01n0025000000; take precedence;measurement or testing of electric or magnetic variables or of electric or magnetic properties of materials g01r)(11014)
G01N27/02 - By investigating impedance(1075)
G01N27/04 - By investigating resistance(146)
G01N27/22 - By investigating capacitance(1087)
G01N27/28 - Electrolytic cell components(120)
G01N27/32 - Calomel electrodes(27)
G01N27/327 - (19)
G01N27/333 - (96)
G01N27/34 - Dropping-mercury electrodes(11)
G01N27/36 - Glass electrodes(28)
G01N27/38 - Cleaning of electrodes(23)
G01N27/401 - (1)
G01N27/403 - (11)
G01N27/404 - (6)
G01N27/406 - (27)
G01N27/407 - (64)
G01N27/409 - (12)
G01N27/41 - Oxygen pumping cells(364)
G01N27/411 - (11)
G01N27/413 - (5)
G01N27/414 - (9)
G01N27/416 - (283)
G01N27/417 - (50)
G01N27/419 - (5)
G01N27/447 - (23)
G01N27/453 - (16)
G01N27/85 - Using magnetographic methods(180)
G01N27/87 - Using probes(122)
G01N27/90 - Using eddy currents(1369)

Device for determining parameters of tape superconductors // 2628452
FIELD: electricity.SUBSTANCE: device for determining the parameters of tape superconductors includes a generator, a frequency-setting element of the generator, a coil connected to the generator, a receiver, a frequency-assigning element of the receiver and a coil connected to the receiver; the coils of the generator and receiver are located with a gap allowing for placement between the coils of the tape superconductor, and the frequencies bandwidth of the frequency-specifying elements of the generator and receiver coincide not less than half the bandwidth of the frequency-assigning element having a smaller bandwidth.EFFECT: ensuring the possibility of high accuracy and reproducibility of measurement results.13 cl, 2 dwg

Amperometric method of measurement of nitrous oxide concentration in gas mixtures // 2627174
FIELD: measuring equipment.SUBSTANCE: electrochemical cell with a cavity, formed by two discs of an oxygen-conducting solid electrolyte of 0.9 ZrO2+0.1Y2O3, on the opposite surfaces of one of which the electrodes are located. It is placed in the flow of the analyzed gas mixture, electrodes are supplied with a DC voltage in the range from 1 to 2 V connecting the positive pole to the electrode located on the outer side of the disc, and the negative pole to the inner surface, whereby free oxygen and oxygen, obtained after decomposition of nitrous oxide from the cell cavity, are pumped out into the stream of the analyzed gas mixture at the working temperature of the cell, and upon reaching stationary state when the amount of the oxygen, pumped out from the cavity cell, would be equal to the amount of the oxygen, supplied to it. The limiting current, flowing through the cell, is measured. The concentration of nitrous oxide in the analyzed gas mixture is determined by the limiting current value of the oxygen amount, pumped out of the electrochemical cell cavity.EFFECT: ability of amperometrical measurement of the concentration of nitrous oxide in a gas mixture with the aid of an easy-to-manufacture and easy-to-operate measuring device based on an oxygen-conducting solid electrolyte.6 dwg
ethod of producing gas multisensor of conductometric type based on tin oxide // 2626741
FIELD: chemistry.SUBSTANCE: method is carried out by electrochemical deposition in a vessel equipped with a reference electrode and a counter electrode and filled with a solution containing nitrate anions and tin cations SnCl2 with the concentration of 0.05-0.15 mol/l and NaNO3 with the concentration of 0.1-0.3 mol/l, a layer of tin oxide in the form of nanocrystals is deposited by cyclic voltammetry on a dielectric substrate equipped with strip electrode sensors acting as a working electrode in a solution, pH of which is 1.45±0.02 by changing the potential applied to the sensor electrodes from 0 V to the negative side relative to the reference electrode potential to the values of, at least, -1.7 V with the potential sweep rate in the range of 0.02 to 0.25 V/s, then the potential is increased to the value not higher than +2.0 V and the reverse reduction to 0 V with the same sweep rate. The described cyclic sequence of potential changes is applied repeatedly before the peak disappears on the curve of cyclic voltammetry.EFFECT: providing the possibility of producing a gas-sensitive layer of tin oxide directly on a substrate without metallic tin impurity.6 cl, 9 dwg

Device for determination of components concentration of strong electrolytes mixture // 2626297
FIELD: measuring equipment.SUBSTANCE: device for determining the concentration of components of a mixture of strong electrolytes contains a recuperative heat exchanger, an automatic temperature measurement and control system, a conductometer with a flow measuring cell, a measuring device with a sensor for measuring the temperature of a solution in a measuring cell and a computer. According to the invention, the device further comprises a system for automatically diluting the analytes to be analysed with a solvent. The system of automatic dilution of the analysed mixtures with a solvent is equipped with series-connected measuring vessels of various volumes, electric valves for filling the measuring vessels, overflowing excess liquid and draining the liquid, and also with a solvent tank equipped with an overflow tube, electric valves for filling the solvent tank with liquid and draining the liquid, mixer for mixing dilute mixtures of electrolytes with a solvent with a magnetic stirrer placed in it, equipped with an electric valve for supplying the diluted mixture to a recuperative heat exchanger.EFFECT: increasing the accuracy of measurements and reducing operating costs.3 cl, 2 dwg, 1 ex

Accurate measurement of analyte for electrochemical test strips, based on numerous discrete measurements, determined by detectable physical characteristic (characteristics) of analyte containing sample // 2626048
FIELD: medicine.SUBSTANCE: method for analyte concentration determination in a physiological sample with a biosensor comprises physiological sample application to any of at least two electrodes to initiate a test sequence for analyte content determination; sending the first signal to the sample to infer sample physical characteristic; application of the second signal of the same duration as the first, to the sample, overlapping the test sequence to obtain the first output transition signal, wherein the first transient output signal correlates both with the duration and magnitude of the first signal; retrieval of a specific sampling time during test sequence execution in the first sampling period based on sample physical characteristics; obtaining of the second transient signal from the first transient signal during the second sample acquisition period; Obtaining corresponding values of the second transition signal at selected time intervals during the second sampling time period; and analyte concentration determination based on the corresponding values of the second transition signal in the selected time intervals.EFFECT: provision of an opportunity to improve measurement accuracy.24 cl, 15 dwg
Device for reproducing and transmitting mass concentration units of gases in liquid and gas media // 2626021
FIELD: measuring equipment.SUBSTANCE: device is based on sequentially preparing and diluting distilled water in sample solutions and verifying dry and wet gas mixtures with nitrogen PGS in the gas phase of the working chamber; determining the mass concentration of gases dissolved therein by a calibrated or verified analyzer. The device contains a working chamber with a gas receiver phase, a standard absolute pressure meter, a control unit with compressors and electro-pneumatic valves connected to the external terminals of the control unit, and a front panel with control bodies and an air-water pump capacity control. The working chamber consists of a sample preparation unit and a flow cell, filled with water at the ratio to the gas phase volume of not more than 1/3. In addition, an autonomous bubbler for pumping a gas mixture through a closed loop of the gas and liquid phase of the sample preparation unit, an air-water pump in the receiver for the continuous pumping of the analyzed liquid or gas through the sample preparation unit and the flow cell, liquid or gas additive dispensers, a thermometer, a sensing element, a heater, an automatic temperature stabilization unit electrically connected to the sensor and the front panel of the control unit are introduced. The sample preparation unit is pneumatically connected to the dispensers and the flow cell in which an electrochemical or optical sensor is arranged, the pump in the receiver, a vessel with an oxygen absorber, a balloon with nitrogen, a balloon with a verifying gas mixture, compressors and valves connected to the external terminals of the control unit.EFFECT: increasing the graduation, verification and calibration accuracy of analyzers of gas composition in liquid and gas media.2 cl, 1 dwg, 3 tbl

ethod of forming electric conducting films selective with regard to moisture content in air framework, by interaction on surface of oxid water-soluble polymer oxides and potassium (ii) potassium hydrogen (ii) // 2625827
FIELD: chemistry.SUBSTANCE: poly-N,N-dimethyl-3,4-dimethylenepyrrolidium chloride is applied to the oxide glass substrate by drawing from an aqueous solution with a concentration of 5-20 wt % with a constant speed of 2-3*10-6 m/s. Then, hexacyanoferrate (II) of potassium is applied on top of it using an ultrasonic spraying method in an amount that provides a mass ratio of potassium hexacyanoferrate (II) to poly-N,N-dimethyl-3,4-dimethylenepyrrolidium chloride, equal± to 2.30.1:1, resulting in the formation of poly-N,N-dimethyl-3,4-dimethylenepyrrolidium cyanide.EFFECT: increase in electrical conductivity, increase sensitivity to the content of water vapor in the air and improve microhardness, uniformity.2 dwg
ethod and device for express control of thermo-technical qualities of building structures materials // 2625625
FIELD: measurement equipment.SUBSTANCE: method for express control of thermotechnical qualities of building structures materials includes operations for capacity measurement, its transformation into pulse trains, transmission of information to measuring and computing unit, calculation of the required parameters by individual formulas for each parameter, and recording of these values ​​on the display element. In this case the calculation of the required parameters is performed by common formula Yi=ai+bi.ΔX+ci(ΔX)2, where Yi - desired parameter; ai, bi, ci - empirical constants obtained experimentally and entered into read-only memory of the device; ΔX - difference between numbers of pulses in trains transmitted to the measuring and computing unit before and after installation of the sensor on the surface of the controlled structure, respectively, and the number of determined parameters is more than two (i>2).EFFECT: expansion of functionality consisting in increased number of measurable parameters, and simplification of calculations.6 dwg
ethod of producing and determining content of colloid silver ions during electrolytic production of solution // 2625614
FIELD: chemistry.SUBSTANCE: method of producing and determining the content of colloidal silver ions during the electrolytic production of a solution is characterized by the fact that colloidal silver ions are produced by means of a device consisting of a bulk silver electrode (Ag+), a constant-current battery source, a negative terminal of stainless steel and a container of distilled water. The direct current from the battery is passed through a volumetric silver electrode immersed in distilled water, the difference in mass of the silver electrode measured before and after electrolysis is set to the concentration of the colloidal silver ions in the solution, as well as drying the solution of the colloidal silver ions in porcelain crucibles.EFFECT: possibility of producing colloidal solutions of silver ions on an industrial scale and determining the concentration of ions without using an ionometer.1 tbl
ulti sensor gas analytical chip based on potassium titanate and method of its manufacture // 2625543
FIELD: electricity.SUBSTANCE: multi sensor gas analytical chip (MGC) includes a dielectric substrate with a formed set of coplanar strip electrodes, on top of which a matrix layer of potassium titanate whiskers of the general chemical formula KxH2-xTinO2n+1, where x=0-2, n=4-8. Each pair of electrodes forms a sensor segment of the matrix layer of potassium titanate whiskers, the density of which is variable for different segments and which resistance varies under the influence of combustible gases at room temperature. According to the method of manufacturing a multi sensor gas analytical chip based on potassium titanate whiskers, the dielectric substrate is washed in an organic solvent and distilled water, dried under vacuum at a temperature of 60-100°C, a set of coplanar strip electrodes of noble metal 0.1-1 mcm in thickness and 50-200 mcm in width with a gap between the electrodes of 10-100 mcm is applied to the substrate surface by cathode and/or magnetron sputtering, a suspension of a potassium titanate whisker powder dispersed in distilled water with a concentration of 0.01-5% by weight is applied on top and the resulting structure is dried at room temperature for 24 hours.EFFECT: creation of a multi sensor gas analytical chip based on the layer of potassium titanate whiskers, which makes it possible to analyze the form of the gas medium at room temperature, which leads to a significant reduction in the energy consumption of this type of devices and the expansion of its technical application.5 cl, 9 dwg

ethod for controlling tightening of nipple joints of metal pipelines // 2625400
FIELD: measuring equipment.SUBSTANCE: active electrical resistance is measured at an accessible nipple joint area and the resistance is measured at an accessible pipe section of a certain length, equal to the length of an inaccessible pipeline part of the nipple joint. Then, by subtracting the resistance measured at an accessible pipe section from the measured total joint resistance, the electrical resistance value of the nipple joint is determined. The obtained resistance value is further compared with the resistance measured in the same way on the control sample. The necessity for additional tightening of the joint is judged by the value of discrepancy between the obtained value and the normalized value.EFFECT: improved quality and speed of the joint tightening.1 dwg

ethod of obtaining sensitive material for a gas sensor on a sapphire substrate // 2625096
FIELD: physics.SUBSTANCE: invention is used to produce a gas sensitive material that is based on titanium dioxide deposited on a sapphire substrate and is designed to record the content of microimpurities of carbon monoxide and oxygen. A method for producing a gas sensitive material on a sapphire substrate, comprising the step of forming a gas sensitive material on a sapphire substrate by centrifugation from a film-forming solution of titanium tetraisopropoxide, which is then subjected to drying and annealing. The gas sensitive material is subjected to laser annealing using pulsed solid-state Nd: YAG laser radiation with a wavelength of 1064 nm, a pulse duration of 50-100 ns, and an average power of 80-100 W.EFFECT: possibility of improving the quality of the crystal structure and the stability of the gas sensitive characteristics of the film of a gas sensitive material by modifying its crystal and defect structure during the laser annealing process.2 dwg

Remote method of early damage detection in aluminium alloy structures // 2624995
FIELD: metallurgy.SUBSTANCE: method involves installation of flat capacitive transducer near potential risk area (strain concentrator) of metal, area deformation by application of external force by a loading device, EMR signal generation due to mechanical instability development in the form of spreading deformation bands, transformation of EMR signal by a capacitive EMR transducer and signal registration, with electrically active Al2O3 oxide film used as EMR source on the surface of aluminium alloy, where EMR signal evolves upon displacement of double electric layer connected to the oxide film against immobile EMR transducer in the course of evolvement and spread of localised plastic deformation in the form of mobile necking or during fracture propagation.EFFECT: possible contact-free electromagnetic method when metal surface is free of ice crust.6 dwg
ethod of determining the rhodium in aqueous solutions by inversion voltammetry by the peak of selective electrooxidation of bismuth from the intermetallic compound of rhxbiy // 2624800
FIELD: chemistry.SUBSTANCE: method of determining rhodium in aqueous solutions by inversion voltammetry according to the peak of selective electrooxidation of bismuth from the intermetallic compound RhxBiy lies in the fact that rhodium (III) in the solution is transferred to a chloride complex, in solution 1 M HCl electroreduction of rhodium (III) together with bismuth (III) in the "in situ" mode on the surface of a composite graphite electrode modified with bismuth prepared by the method of "injection moulding" in a stirred solution with an electrolysis potential minus 0.8 V for 120 seconds with subsequent registration of anode peaks of selective electrooxidation of bismuth from the intermetallic compound RhxBiy in the differential-pulse mode with a sweep rate of 80 mV/s. The concentration of rhodium (III) ions is determined by the method of adding certified mixtures to the height of the anode peaks on the differential-impulse voltage-current curve of the potential range from minus 0.06 to 0 V with respect to the saturated silver chloride electrode.EFFECT: reduction of the limit and the lower limit of the determined rhodium contents.1 tbl, 1 dwg

ethod of determining the rhodium (iii) in aqueous solutions by inversion voltmetermetry method by selective electrooxidation lead (ii) from intermetal compounds with the rhodium rh3pb2 and rh5pb7 // 2624789
FIELD: chemistry.SUBSTANCE: method of determining rhodium (III) in aqueous solutions by the method of inversion voltammetry according to selective electrooxidation peaks of lead (II) from intermetallic compounds Rh3Pb2 and Rh5Pb7 is that rhodium is precipitated on the surface of the graphite electrode together with lead, forming an alloy in the presence of platinum (IV, II), palladium (II) and gold (III) ions in Rh: Pt=1:1 ratios, Rh: Pd=1:10, Rh: Au=1:10, the accumulation of rhodium ions on a graphite electrode in a stirred solution in the presence of lead ions is carried out for 180-240 seconds at an electrolysis potential minus 1.5 V from the background electrolyte 1M HCl with subsequent registration of anodic peaks of selective lead electrooxidation from alloy with rhodium at a potential sweep rate of 0.05-0.06 V/s, and the concentration of rhodium ions is determined from the area under the peaks of selective electrooxidation of lead in the potential range from -0.5 to -0.2 V, using the method of additives of certified mixtures.EFFECT: determination of rhodium ions in aqueous solutions by inversion voltammetry in the presence of platinum, palladium, and gold ions.2 tbl, 2 dwg, 1 ex

ethod of measuring cross-linking degrees of low and high density polyethylene (versions) and device for its realisation // 2624601
FIELD: measuring equipment.SUBSTANCE: method is used to measure the cross-linking degree of polyethylene (PE) of low (LDPE) and high density (HDPE). The difference is measured for amplitude of maxima ΔI spectra of thermostimulated depolarization currents (TSD) of coronoelectret LDPE and HDPE with the thickness of h>250 µm before and after stitching using a device, in which upon measuring the spectra of the thermostimulated depolarization currents, the polyethylene samples are placed between the grounded electrode measuring and the blocked electrode with blocking insulation in the form of a non-polar layer of silicon dioxide resulting from annealing at 700-1000°C of Muscovite mica plates with the thickness of 10 microns. Spectra measurement of the thermostimulated depolarization currents of sewn and unsewn polyethylene of low and high density is carried out at a linear heating rate β=10 deg/min, and degree of cross-linking of the polyethylene is determined using the following mathematical expression: Ccl=ΔI/Imax ncl, where Ccl - the coefficient of the cross-linking degree; ΔI - the current reduction at the maximum of the spectra of thermostimulated depolarization currents after cross-linking, A.EFFECT: ability to improve the accuracy of determining the degree of cross-linking of insulating high density polyethylene and low-density polyethylene.3 cl, 2 dwg

ethod of cake thickness control // 2624589
FIELD: measuring equipment.SUBSTANCE: method of cake thickness control is based on the change in the sensor capacity when the cake thickness is increased and consists in placing in the vessel with liquid forming the cake a pre-evaporated cake thickness control sensor comprising electrodes made in the form of two flat combs having teeth and a base in the form of flat rectangles connected to each other and applied on a flat dielectric base. The teeth of the first comb enter into the gaps between the teeth of the second comb to form a uniformly alternating teeth and gaps between them, wherein the width of the gap between the teeth is equal to the tooth width, according to the invention, additional electrodes are installed on the two diametrically opposite corners of the sensor so that at least two flat L-shaped electrodes are located on each mentioned corner, wherein the inner L-shaped electrode is formed by a tooth and a base of relative flat comb, wherein potential of the additional electrodes is made equal to potential near the located electrode forming the comb by value and sign.EFFECT: reduction of the influence of the capacity of other bodies on the change in working body capacity, possibility to level the edge effect and improvement of measurement accuracy.3 cl, 4 dwg

ethod for measuring concentration of combustible gases and vapors in air by diffusion-type thermocatalytic sensor // 2623828
FIELD: measuring equipment.SUBSTANCE: method for measuring the concentrations of combustible gases and vapors in the air by a diffusion-type thermocatalytic sensor includes a cyclic mode of the sensor operation with a two-stage pulse power supply with specified voltage amplitudes, duration of voltage pulses and pauses between them. Herewith the first stage of the two-stage voltage pulse is formed by short-time voltage supply to the sensor, which is 2-2.5 times higher than the nominal operating voltage of the sensor, and the duration limited by the sensor reaching the temperature is 15-20% higher than its nominal operating value. The measurement of the combustible gas concentrations is made during the transient process of cooling the sensor and is performed by measuring the difference in the output voltage signals at two strictly fixed points in time at the beginning and the end of the cooling transition process.EFFECT: reducing the duration and power of heating and measuring the current pulse during the cyclic operation of the thermocatalytic sensor, which reduces the contact time with the reacting substances and contributes to the increase in the resistance of the catalytically active surface to poisoning by catalytic poisons and to the decrease in the blocking of this surface by carbon-coke deposits formed during oxidation of hydrocarbons and sulfur-containing combustible components.2 cl, 4 dwg

ethod and device for determining octanic numbers of automotive gasoline // 2623698
FIELD: measuring equipment.SUBSTANCE: method for determining the ON of automotive gasoline is to determine the current value of the information parameter of the analyzed gasoline and to determine the ON for the corresponding calibration dependence. The value of the information parameter is determined by measuring the current temperature values and the information parameter of the analyzed gasoline taking into account the previously measured value of the electrical conductivity of the gasoline poured into the pipeline. As an information parameter, its dielectric permittivity determined from the resonant frequency of oscillations of the capacitive oscillatory circuit, is used. The device for carrying out the method comprises a flow-through capacitive sensor integrated in the vehicle gasoline line, and a temperature sensor mounted in the capacitive sensor housing. Herewith a differential circuit is used to switch on two identical silicon-diodes generators, as well as the measurement of the temperature and dielectric constant is used immediately before feeding it into the exhaust gasoline system of an oil refinery, a BC, a gas station or into a running engine, and shielding the signal wires is used to reduce the effect of electromagnetic interference.EFFECT: increasing the accuracy of measurement and efficiency, the ease of analyzing gasoline.6 cl, 3 dwg
ethod of remote determination of the relative dielectric permeability of the environment under the atmosphere-ocean border // 2623668
FIELD: physics.SUBSTANCE: monitored portion of the sea surface is irradiated with microwave radio waves on oblique polarization, the backscattered signal is recorded simultaneously on vertical and horizontal polarizations, then the polarization ratio is calculated, according to which the relative dielectric constant of the medium is calculated under the atmosphere-ocean boundary.EFFECT: increasing the accuracy of measurements due to the fact that the values of the specific effective scattering area for different polarizations are determined simultaneously.1 cl

Semiconductor methane sensor // 2623658
FIELD: measuring equipment.SUBSTANCE: semiconductor methane sensor contains a dielectric substrate (1) and a sensitive layer (2) with metal electrodes (3) applied to its surface with a thickness of up to 0.2 mcm. The sensitive layer (2) is made on the basis of europium sulphide modified by the addition of samarium sulphide. The concentration of the additive does not exceed 25 moll. %.EFFECT: sensor has a lower operating temperature for detecting methane in the ambient air.4 cl, 3 dwg, 1 ex
Device, system and method of automated non-destructive testing of metal structures // 2622482
FIELD: oil and gas industry.SUBSTANCE: device for automated non-destructive testing of a metal structure is proposed. It contains an ultrasonic non-destructive testing unit, a non-destructive testing unit based on the magnetic leakage method, an eddy current non-destructive testing unit, a control unit connected to said ultrasonic non-destructive testing unit, non-destructive testing unit based on the magnetic field leakage method and eddy current non-destructive testing unit for sending control signals to test a metal structure, and a navigation unit connected to the control unit and configured to determine the position of said device for performing automated non-destructive testing with respect to the metal structure and the surface condition of the tested metal structure and sending the signals with information about the position of said device to carry out automated non-destructive testing and about the surface condition of the tested metal structure to the control unit. All said units are installed in an explosion-proof housing having means moving over the surface of the tested metal structure. The control unit is designed to simultaneously send the control signals to, at least, one of said units, i.e. the ultrasonic non-destructive testing unit, non-destructive testing unit based on the magnetic leakage method and eddy current non-destructive testing unit, based on the signals received from the navigation unit. And the non-destructive testing unit based on the magnetic field leakage method is adapted to change the induction of the magnetic field, generated by this unit, from a minimum value close to zero to a predetermined maximum value.EFFECT: providing a possibility of creating a device for automated non-destructive testing of metal structures that can perform precise testing of various types of metal structures, including metal structures that have obstacles on their surface, for example, in the form of joints of their constituent plates, and which can operate in automatic or semi-automatic mode.14 cl, 7 dwg

ethod and apparatus for chemical analysis // 2622480
FIELD: chemistry.SUBSTANCE: invention relates to a process for the chemical analysis, wherein the ionized gas stream is fed ionized gas stream (24) to (28) filter mounted in the flow channel (18), filtered ionized gas stream using a method DMS/FAIMS, to remove at least some of the ions (25, 105) from a gas stream. Parallel mostly unionized gas stream (13) which is located on at least one side of the ionized gas stream is fed to the filter area with the ionized gas flow. Mentioned mostly unionized gas stream (13) form a flow channel (18).EFFECT: signal enhancement and improved signal to noise ratio.11 cl, 9 dwg

embrane of an ion-selective electrode for the determination of an octahydrotriborate anion // 2621888
FIELD: chemistry.SUBSTANCE: invention relates to potentiometric methods for the quantitative determination of substances (ionometry) and can be used for nondestructive testing and automatic control of the content of octahydrotriborate anion in aqueous, including technological, solutions. A membrane of an ion-selective electrode for the determination of an octahydrotriborate anion containing polyvinyl chloride, 2-nitrophenyloctyl ether as a plasticiser and an electrocoactive component based on tetraalkylammonium octahydrotriborate is proposed, with the composition comprising a mixture of tetraalkylammonium octahydrotrithi borate having a carbon number in the alkyl radical of 8 to 12 with a hydrophobic addition of tetradecylammonium tetraphenylborate at certain proportions of the component Nents: polyvinyl chloride, 2-nitrophenyloctyl ester tetraalkyl ammonium octahydrotriborate, tetradecylammonium tetraphenylborate.EFFECT: invention makes it possible to optimize the composition of the electrode membrane to determine the octahydrotriborate anion, which improves electroanalytical characteristics such as detection limit, angular slope, reproducibility and stability of the potential.2 tbl, 1 dwg

Device for determining the periods of granular materials drying in a vacuum drying machine // 2621433
FIELD: heating.SUBSTANCE: device (sensor) to determine the period of the drying process of a granular product is arranged directly in the bulk material and consists of two electrodes: lower - solid and upper - mesh, connected with one another by dielectric supports and connected to a measuring unit that displays changes in electrical resistance material to be dried . Moments of sharp change of the electric resistance of the granular product are the transition points in one period of drying and other signal parameter for correction of drying regimes. Schedule of resistance changes, built on the basis of the received data is indirectly drying curve, illustrates the transition point of the drying period to another and will change the drying program, reduce the temperature and prevent overheating of the granular material.EFFECT: invention will allow us to monitor changes in the material moisture by measuring its electrical resistance and regulate the process of drying parameters for vacuum drying plants.1 dwg
Device for investigation of hydro-physical characteristics and properties of fluids and method of its application // 2621271
FIELD: measurement equipment.SUBSTANCE: device for investigation of hydro-physical characteristics and properties of fluids based on the use of sensors included in a bridge measuring circuit. An integrated measuring system is used within its composition, consisting of low-frequency transmission lines with connected sensors of two separate measurement channels - the reference, and the analyzed ones with sensors of titanium alloy included into the bridge measuring circuit, recording the change of amplitude and phase characteristics of signals of the studied fluid by exposure to low-frequency oscillations of sinusoidal, triangular or sawtooth waveform.EFFECT: high accuracy detection of solutions with qualitatively new characteristics upon dilution of the tested substance, as well as identification of the tested solution when comparing it with the reference.2 cl, 11 dwg

Systems and methods for distinction between control sample and test fluid using capacitance // 2621153
FIELD: medicine.SUBSTANCE: group of inventions relates to laboratory diagnostic, and can be used for distinction between a blood sample and an aqueous sample other than blood, the plurality of transient current characteristics and capacitance are measured using a testing device electrically connected to an electrochemical test strip. Transient current characteristics are used to determine whether the sample is a blood sample or an aqueous sample other than blood, based on its characteristics such as the number of present foreign matter, the reaction kinetics and/or capacitance. Also a method is provided the distinction criterion for test device programming.EFFECT: ability to determine the distinction between a blood sample and an aqueous sample other than blood.21 cl, 10 dwg

Device for determination of coating integrity while it is deformed // 2620860
FIELD: electricity.SUBSTANCE: device contains the power supply, the measuring device and the electrolytic cell, made of dielectric material, the electrode is tightly mounted in its lower part, and the contact element is fixed in the upper part, made of ductile, corrosion-resistant material, at that the electrolytic cell is equipped with the system of its filling with the electrolyte, additionally the device is equipped with the deformation unit, under which the lifting table is located, provided with ability of vertical movement, while the vertical guide with electrolytic cell is rigidly fixed on the lifting table, spring-loaded towards the deformation unit, the electrode is connected to the electric circuit of the measuring device and the power source.EFFECT: possibility of dielectric coatings integrity rapid control at deformation of metal samples.2 cl, 3 dwg
Express method for establishing milk falsification by diluting it with water according to piezosensors array signals // 2620343
FIELD: chemistry.SUBSTANCE: method provides the use of an "electronic nose"-type detection device, the matrix of which is formed on the basis of four resonance-type piezosensors. A film weighing 10-15 g of a particular sorbent: rhodamine 6G (Rhod6G) polyethyleneglycoladipinate (PEGA), dicyclohexano 18 Crown-6N (18-K-6), bee glue (PchK) - is applied on defatted electrodes of the piezosensors with the oscillation frequency of 10.08 MHz. The piezosensors are maintained until a stable oscillation frequency is established, and then samples are taken, and the samples are placed in sealed glass vessels with a soft polymer membrane and incubated for 10-15 minutes at a temperature of 18-22°C. By means of a disposable syringe 2 cm3 of the equilibrium gas phase is selected and introduced into a static cell of the detecting device, the piezosensors responses are recorded for 60 seconds, the highest analytical signal ΔFc is selected, the ratio of signals and is calculated, where ΔFRhod6G is an analytical signal of a piezosensor with Rhod6G sorbent; ΔF18-K-6 is an analytical signal of a piezosensor with 18-K-6 sorbent; ΔFPEHA is an analytical signal of a piezosensor with PEHA sorbent; ΔFPchKis an analytical signal of a piezosensor with PchK sorbent, and compared with those of a standard sample; wherein the simultaneous increasing the ratio of signals compared to the standard by more than 30% and decreasing the ratio of signals by more than 10% characterizes excessive water content in the milk, that indicates the milk falsification by diluting it with water.EFFECT: high rapidity, accuracy, objectivity of the measurement and reliability of determining the fact of falsifying the milk by water.1 ex, 2 tbl, 2 dwg

Defects diagnostic device inside the buildings made of tube steel // 2620327
FIELD: measurement equipment.SUBSTANCE: defect diagnosis device in the constructions made of the steel pipe, comprising GMR magnetic sensors and data processing unit, GMR sensors are placed on the boards in the form of discs mounted on a common shaft parallel. Each board taken not less than 8 bicomponent GMR sensors placed on the outer circumference of the card equidistant from each other, form a board of at least two groups, two in each board. Wherein the horizontal axis of the bicomponent GMR sensors on each of the boards are perpendicular tubing axis are coaxial and are directed to each pair of oppositely lying sensors toward one another, the vertical axis of the sensors are parallel to the axis of the tubing and parallel to one another, the vertical axis are arranged one above the other sensors to provide necessary precision are coaxial. At the end of the rod information processing unit is placed with the output connector to the control and recording devices.EFFECT: expansion of the functional capabilities of the device.7 cl, 8 dwg

Electrochemical cell for in situ spectroscopy // 2620022
FIELD: physics, measurement technology.SUBSTANCE: invention relates to the design of electrochemical cells for investigating electrochemical systems with in situ spectroscopy and microscopy techniques. A sealed electrochemical cell consists of a housing having a through-cavity for accommodating an electrolyte, a working electrode, at least one auxiliary electrode and a plate, configured for airtight attachment on the side of the lower end of the housing. The working electrode, which is simultaneously a window for spectroscopic measurements, is the form of a graphene layer placed on a porous silicon nitride substrate. In the housing of the cell there is space for placing the auxiliary electrode and a comparison electrode, as well as porous glass for separating electrolytes of the working electrode and the auxiliary electrode.EFFECT: invention enables investigation of electrochemical systems using in situ spectroscopy techniques, and widens the operating pressure range.12 cl, 3 dwg

Evaluation method of deformation properties of polypropylene carbon-filled filaments // 2619866
FIELD: technological processes.SUBSTANCE: invention concerns the method of evaluating the deformation properties of polypropylene carbon-filled filaments during the usage. The method consists of the following: every minute the samples of synthetic filaments are stretched. This process is accompanied by the impact of electric current. Then, every minute measurement of tensile stress values and the values of the electric resistance are taken. At the same time, the values of the electrical resistivity are made with the help of formula, where R - electrical resistance of the filament, L 2mm - distance between contacts, b - filament thickness, d - width of the sample; wherein, the polypropylene carbon-filled filament is stretched to achieve the value of electrical resistivity r = 109 Ohm × m. Based on the obtained value of the maximum tensile stress, along with the averaging formula: where si - The maximum acceptable tensile stress in each case, the antistatic properties' retention of polypropylene carbon-filled filaments is judged.EFFECT: use of the method allows to predict the resistance of the antistatic materials' properties during repeated stretching of polypropylene carbon-filled filaments.6 tbl, 1 dwg

Stand for research of process of magnetocontrollable nanoparticle delivery into vascular system (versions) // 2619854
FIELD: medicine.SUBSTANCE: stand for research of the process of magnetocontrollable nanoparticle delivery to the vascular system comprises a Y-shaped tube with single end located between the magnet and the recorder, and connected to a storage tank, a pump, a flow meter, as well as a pressure sensor, and a nanoparticle delivery element. The storage tank output is connected through the pump and the flow meter to one of the forked ends of the Y-shaped tube, forming a closed loop that simulates the circulatory system. At that, the said forked end of the Y-shaped tube is also connected to the pressure sensor and the nanoparticle delivery element. The nanoparticle delivery element is a syringe, according to the first version, and an electromagnetic probe connected to a power source, according to the second version.EFFECT: opportunity to research the process of magnetocontrollable nanoparticle delivery to the vascular system.3 cl, 7 dwg, 1 tbl, 1 ex

Accurate measurement of analyte concentration for electrochemical test strips based on determined physical characteristics of sample containing analyte // 2619830
FIELD: physics, measurement equipment.SUBSTANCE: to measure glucose levels. Character of invention is the fact that the method of determining analyte concentratin in a fluid sample using a biosensor having at least two electrodes and a reagent deposited on at least one of the electrodes is comprising: a deposition of fluid sample at any one of at least two electrodes to start sequence of analyte test; supplying of the first signal to a sample to measure or assess the physical characteristics of this sample; extrution of tilt value for the party for a biosensor based on measured or estimated physical characteristics; transmitting the second signal to a sample; measuring the output signal from at least one of at least two electrodes; and calculating analyte concentration based on the measured output signal and extructed tilt for the partybased on measured or estimated sample physical characteristic.EFFECT: invention provides possibility of reducing testing time and improved accuracy of results.23 cl, 14 dwg, 3 tbl
Device for internal defectoscopy of pipeline walls // 2619826
FIELD: physics.SUBSTANCE: apparatus for the internal inspection of the walls of pipelines comprising a housing supported on an inner surface of the pipe spring-support elements, are designed as wheels with a motor generator placed outside and within the housing, the search system defects, the computer system, traffic control system, detection system of coordinates, power system to the battery, wherein each wheel motor generator preloaded against the inner surface of the torsion unit furthermore housing a location with an optical defect analysis unit associated with sensors, inserted inside of the rotary disc on bearings, with projections on the outer surface, wherein pairwise at an angle to each other in the surface of the disc open channels set LED and photodiode, in the ends of the housing on the bearings there are discs with projections, in the radial channels of which are placed frequency sensors consisting of a coil and a ferrite core connected to the frequency analysis unit, a video camera with illumination from LEDs is fixed inside the end of the case.EFFECT: providing the possibility of controlling pipelines from various materials.1 dwg

ethod and device for determining the flow regime of water-and-gas mixture // 2619797
FIELD: oil and gas industry.SUBSTANCE: method for determining the flow regime of water-gas mixture involves measuring the electromotive force at N points of the mixture by means of N sensors. The measurement is carried out at a frequency of at least 500 Hz, and the values of the electrical conductivity of the water-gas mixture at the sensor installation site are determined from the current value and the measured electromotive force, which is then digitally transmitted to plot the dependences of conductivity from the measurement time for each sensor. The obtained graphs are compared with the experimental graphs constructed under known flow regimes for different flows, and the results of the comparison determine the flow regime of water-gas mixture. The device for determining the flow regime of water and gas mixture contains a measuring head 1, inside of which there are N sensors all around the perimeter of the cross section, connected to the measurement results processing unit 5.EFFECT: increasing the accuracy of identification of the flow regime of water-gas mixture.2 cl, 6 dwg

Device for determining ferrite content in material // 2619310
FIELD: measuring equipment.SUBSTANCE: device for determining the ferrite content in the material comprises a body with a recess in the upper section, wherein the double body walls are provided with the channels for passage and the branch pipes for input and output of cooling fluid. The branch pipes are connected to the thermostat through hoses. Two permanent magnets are fixed inside the body on the opposite recess walls, the first two opposite poles of which are oriented towards each other so that the magnetic force lines, connecting their poles, intersect the space within the recess. The other two opposite poles of the magnets are connected by the C-shaped magnetic core, on which the inductance coil is wound. The inductance coil ends are connected to the first connector in the body, to which the first induction EMF recorder is connected. A thermal chamber is mounted in the body recess. A thermal chamber, connected to the current source, is mounted on the outer body side within the recess. An electric motor is inside the body, on the axis of which the rod is fixed. The rod is inserted into the thermal chamber through the side holes in the body recess wall and the thermal chamber. The rod is designed to place the test material in the thermal chamber volume and to rotate the test material at the constant angular speed in the vertical plane against the magnetic field lines of the constant magnets connecting their poles. The measuring junction of the thermocouple is inserted into the thermal chamber volume through the side holes therein so that the free thermocouple ends are located inside the body and connected through the second electrical connector in the body with the second EMF recorder.EFFECT: increasing the accuracy of determining the temperature dependences of the magnetic material ferritization degree.2 cl, 3 dwg
Express-method of estimation of oil diesel fuel quality // 2618960
FIELD: oil and gas industry.SUBSTANCE: according to the invention the method consists in selecting a predetermined amount of samples, determining the content of fatty acid methyl esters, while measuring the specific electric conductivity of the sample at a temperature of 20±2°C, for which the sensor of the device is kept in the sample of the analysed fuel for at least 60±1 s, and the content of fatty acid methyl esters (FAME) is determined according to the proposed dependency, with the content of fatty acid methyl esters (FAME) not exceeding 7% by volume, the fuel meets the requirements of GOST R 52368-2005.EFFECT: reduction of time for determination of fatty acid methyl esters in diesel oil fuels, rejection of improper fuels in ONLINE mode using simple equipment that does not require special sample preparation and product calibration.3 tbl
Coating integrity determination method at its deformation // 2618720
FIELD: measuring equipment.SUBSTANCE: method includes the connection operation to the meter of electrolytic cell and the sample with testing coat and the contact creating operation of the testing coat with the electrically conducting liquid, pre-filled in the electrolytic cell. The method according to the invention is added with the operation of current source connecting to the electrical circuit, formed by the metal sample with the testing coat, the electrolytic cell and the measuring device, and the operation at which simultaneously perform the continuous deformation of the metal sample with the testing coat and the continuous monitoring of the testing coat continuity applied on it.EFFECT: possibility of the dielectric coats continuity operational research and the dielectric coats strength operational determination with high accuracy in the process of continuous deformation of metal samples with the dielectric coats, for example, when drawing in the metal sample with cavity coated according to Erikson.2 cl

Quality control method for cast workpieces of steel 110г13л and device for its implementation // 2618503
FIELD: physics.SUBSTANCE: measurement of the magnetic aftereffect of the investigated detail area is carried out for the rough quality estimation of the heat treatment. Herewith the device is used, in which the interconnected magnet and the spring are located in the housing with the ability to move along it and interact with the micro-electronic switches, that are connected to the indicator through the analog-to-digital converter, which is used as a liquid crystal display. In case of the satisfactory heat treatment, the workpiece is subjected to the impact force, whereupon the second time measurement of the magnetic aftereffect is performed to compare it with the corresponding value of the standard sample impact toughness, tested in the pendulum Koper. The steel state of the controlled part (workpiece) is judged according to the value of the derived parameters.EFFECT: increasing the informativeness and reliability of the cast workpiece estimation of the mining machinery working bodies of steel 110Г13Л by the non-destructive method for determining the possibility of operating them in the terms of the impact wear.2 cl, 1 dwg, 1 tbl

Device for controlling substances // 2618488
FIELD: physics.SUBSTANCE: device for controlling substances is proposed comprising a physical field source 1 in the set of the series-connected signal generator 14, a modulator 15, a LED 16, in which there is a series-connected an element with the control object 2, an physical field converter 3, and, in addition, a series-connected analog-to-digital converter 5, a multiplier 6, the first and the second conversion circuits, each comprising series-connected function generators 7 and 8, accumulating and averaging combiners 9 and 10, reading units 11 and 12, wherein the output of the first circuit is connected to the first input of the calculation unit 13, and the output of the second circuit is connected to the second input of the calculation unit 13, the first output of which is connected to the inputs of gating the accumulating and averaging combiners 9 and 10 combined in the bus "Time measurement", and the second output of the calculation unit 3 is connected to the free input of the multiplier 6, wherein the input of the analog-to-digital converter 5 is connected to the selective loading of the phase detector 4, and the output of the physical field converter 3 is connected to the first input of the phase detector 4, while the output of the signal generator 14 is connected to the second input of the phase detector 4. The device for controlling substances can be used in the field of non-destructive substance control, static characteristic measurement of random processes.EFFECT: introduction of a phase detector into the structure with the selective load and respective connections, allows to extend functional capabilities of the device by controlling the substance with the statistical method using the physical field delay by the substance.2 dwg

ethod for determining antioxidant activity using radical initiators // 2618426
FIELD: measurement equipment.SUBSTANCE: invention can be used in the research laboratories for studying the antioxidant properties of various natural, synthetic and biological objects. The essence of the proposed method lies in the fact that the determination of the antioxidant activity is carried out on the difference of the potential detected by the interaction of the thermally generated radicals with the studied sample in the solution.EFFECT: improving accuracy, reliability and reproducibility of the results, expanding the test substances, obtaining the data in the universal measurement units, which allows to perform a comparative analysis of both the individual compounds and the complex objects.3 cl, 8 dwg, 4 ex

Device for determining the concentration of gas // 2617915
FIELD: chemistry.SUBSTANCE: invention relates to an apparatus for determining gas concentrations: sulfur oxides (SOx) Contained in exhaust gases from an internal combustion engine. The device of determining gas concentration comprises determining a gas concentration unit and the electronic control unit. The determining gas concentrations element includes a first electrochemical cell and the second electrochemical cell. The electronic control unit is configured to determine the concentration of the sulfur oxide contained in the test gas based on the obtained first predetermined values matched to the current flowing through the first electrochemical cell, when the first removes the voltage applied to the second electrochemical cell and measuring the voltage applied to the first electrochemical element.EFFECT: possibility of gas concentration - sulfur oxide contained in the exhaust gas with the highest degree of accuracy possible by use of the gas analyzer of the limiting current.12 cl, 6 dwg

Liquid electrolyte for electrochemical gas sensor // 2617896
FIELD: chemistry.SUBSTANCE: for liquid electrolyte used in electrochemical gas sensor for detecting NH3 or NH3 - containing gas mixtures, the present claim provides that said electrolyte contains at least one solvent, one conductive salt and/or one organic mediator. Wherein the conductive salt represents an ionic liquid, an inorganic salt, an organic salt, or a mixture of these substances. Preferably, the electrolyte consists of (i) water, propylene carbonate, ethylene carbonate or mixtures thereof as the solvent; (Ii) LiCl, KCl, tetrabutylammoniatoluenesulfonate or 1-hexyl-3-methylimidazolium tris (pentafluorethyl) trifluorophosphate as conductive salt; and (iii) tretbutylhydroquinone or anthraquinone-2-sulfonate as an organic mediator.EFFECT: improved properties.44 cl, 2 dwg

System and method for automatic control of gas sensor devices and parameters // 2617893
FIELD: physics, instrument engineering.SUBSTANCE: invention relates to metrology, in particular to the gas control means. The device comprises a transmitter unit and a sensor unit. The transmitter unit has a display, a memory element, a processor, an expansion circuit, a power supply interface, a control circuitry and a programming and testing circuitry for a transmitter, a spark protection circuitry based on Zener diode, a PCB interface. The sensor has a memory circuit, a processor, sensing elements, a signal conditioning circuitry. Also, the device contains a supply regulation circuit provided with two potentiometers for adjusting the high and low voltage, respectively. The transmitter processor is adapted to compare the sensor voltage with the reference voltage for determining voltage regulation on the sensor. Also, the device includes an amplifier connected to the sensor to generate gain settings that are used to optimize the sensor definitions by changing the value of the sensor gain. This enables the use of one sensor for a plurality of different concentration ranges.EFFECT: invention provides the increased range of sensitivity variation.10 cl, 21 dwg

Electrochemical gas sensors with ionic liquids as electrolytes to detect ammonia and amines // 2617845
FIELD: chemistry.SUBSTANCE: said ionic liquid comprises, at least, one protic ammonium cation with, at least, one hydrogen atom being dissociated, wherein the said, at least, one protic ammonium cation reacts with the given gas by deprotonation. herewith the said, at least, one protic ammonium cation has a pKa value less than 9.25. The invention also relates to the method for detecting a target gas.EFFECT: gas sensor overcomes the problems associated with the use of aqueous electrolytes.14 cl, 5 dwg

ethod for simultaneous evaluation of donnan potential in eight electro-membrane systems // 2617347
FIELD: chemistry.SUBSTANCE: method for simultaneous estimation of Donnan potential in eight electromembrane systems includes measuring of the EMF in eight electrochemical circuits using a nine-section cell from a non-conductive material, wherein each of the eight ion-exchanging membranes have one end immersed into the central housing with the tested solution, and the other end into one of the eight sections with the reference solution, while the response of eight silver chloride electrodes immersed into the section with the reference solution is measured simultaneously relative to the silver chloride electrode immersed in the housing with the test solution using a multi-channel potentiometer, at that, each of the eight electrochemical circuits is closed along the membrane and diffusion in membranes is infinitely slow relative to the test time.EFFECT: accurate assessment of Donnan potential simultaneously in eight electromembrane systems.5 dwg, 2 ex

Combination method of vst bottom separate sheets diagnostic data to construct the visual image of vst (vertical steel tank) bottom with diagnostic data affixment to the sheets numbers and welding joints // 2617175
FIELD: oil and gas industry.SUBSTANCE: inspection of the vertical steel tank bottom (hereinafter VST) is produced by complex for diagnosing bottoms, wherein it is used the method of the magnetic flux leakage (MFL) and the eddy current method for detecting bottom sheets and welding joints defects, to determine their locations and measurements of the residual sheet thickness of VST bottoms and anti-corrosion coating, wherein the system for bottoms diagnostics consists of the sheets scanner and joints scanner; the sheets scanner, in its turn, includes the trolley of special design, which has the magnetic system with the sensor unit, the actuator drive unit, the battery unit, the electronics unit, the navigation system, and the joints scanner also consists of the trolley, on which electronics unit, battery unit, odometer and external sensor are placed. In this case, the sheets scanner and the joints scanner are equipped with the onboard diagnostic information storage device and electronics modules of the sheets scanner and the joints scanner are programmed to the certain operating parameters, associated with the defects detection, storage of diagnostic information, adjustment of the navigation system.EFFECT: provision of opportunities to improve the reliability of the diagnostic data and timely prediction of critical defective areas of the tank bottom.2 cl, 5 dwg

ethod of electrometrical measurement of derivative of chemical potential by temperature and device for its implementation // 2617149
FIELD: electricity.SUBSTANCE: proposed method of measurement ∂μ/∂T, which is a measure ∂S/∂n in the two-dimensional systems with variable density n. The invention uses the structure of the temperature modulation is made on the sample surface, and electrically equivalent to a plane capacitor, one of whose plates is an investigational agent, and subsequent measurement of the emerging recharge current structure. The structure (sample) is placed on the screening external electric field and the heat conducting container, providing the temperature uniformity of the sample area. If the test substance is a two-dimensional system with a tunable carrier concentration, the result of an additional measurement is to determine the entropy of the system.EFFECT: improved accuracy and reliability of the measurement of the chemical potential and entropy.7 cl, 3 dwg

Stand for calibrating device of mass-spectrometric gas flow measurements // 2616927
FIELD: measuring equipment.SUBSTANCE: stand for calibrating the device of mass spectrometric gas flow measurements comprises a gas inlet chamber connected to the pressure sensor, not sensitive to the gas genus, a gas flow recording camera coupled with the mass spectrometer and the combined full-range gas pressure sensor, a vacuum pumping system for chambers, the gas inlet chambers and the gas flow recording chambers are connected to the line with a valve, wherein a gas-permeable membrane is installed on the line end introduced into the gas inlet chamber, in addition, the gas inlet chambers and the gas flow recording chambers are connected by the line with the two valves, between which a calibrated flow of the gas flow molecular mode is installed.EFFECT: invention provides calibration of the mass spectrometric device in a wide range of the measured gas flows.2 cl, 4 dwg
 
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