Method and apparatus for calibrating turbidity sensors. RU patent 2469297.

FIELD: physics.

SUBSTANCE: method of calibrating turbidity sensors involves picking up the signal of the sensor depending on turbidity of the liquid passing through it. The sensor is placed in a closed loop with a uniform cross-section in which there is directed movement of liquid with constant speed which enables to form a uniform suspension of particles. The required concentration of particles and their fractional composition are provided by adding a weighted portion of particles of a given fraction to the liquid. The apparatus for calibrating turbidity sensors has a vessel with a liquid in which there is a mechanical drive with a control which provides it with movement and a turbidity sensor with a measuring system. The vessel is in form of a closed loop with a uniform cross-section in which there is a pump. A loading unit is mounted in the top part of the loop and the calibrated sensor is placed in the descending branch of the loop.

EFFECT: high accuracy and reliability of calibration.

1 dwg

IPC classes for russian patent Method and apparatus for calibrating turbidity sensors. RU patent 2469297. (RU 2469297):

G01N21/85 - Investigating moving fluids or granular solids

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