FIELD: measurement equipment.
SUBSTANCE: sensor (102) serves to measure speed of liquid (308), flowing via a channel (306). The sensor (102) uses the principle of temperature measurement that demonstrates stability in respect to deviations by amount of energy dissipated by a heating element (106). A receiver (110) of the sensor is made as capable to receive electromagnetic radiation generated by a control transmitter (622), contained in the control unit (602) for interaction with the sensor (102). Electromagnetic radiation is used for power supply to a heating element (106) made as capable of liquid heating. Based on the measurement signal generated by a converting circuit contained in the sensor (102), the control drive (624) controls speed of liquid. With this purpose the sensor transmitter (116) is made as capable of transmission of the measurement signal to the control receiver (634).
EFFECT: provision of the possibility to measure speed of fluid and production of a measurement signal resistant to deviations in respect to energy amount dissipated by a heating element.
13 cl, 8 dwg
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