FIELD: measurement; test.
SUBSTANCE: group of inventions refers to the field of detecting electrically conductive particles in a liquids flowing in a pipe at a speed. Summary of the inventions consists is fact that the device for detecting electrically conductive particles in the liquid flowing in the pipe at a speed additionally comprises a self-test unit for automatic or external of the systematic quantitative checking the signal processing functions of the signal processing unit and / or systematic quantitative checking of the coil arrangement and / or receiver coil arrangement and / or for performing an external calibration request for the signal processing unit by means of a calibration standard installed in place of the transmitter coil arrangement and / or receiver coil arrangement.
EFFECT: technical result is increasing reliability of the measurement results.
3 cl, 5 dwg
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