Submersible thermomanometers KVSM-1 GTDT-K

Designed for measuring pressure and temperature of medium by contact method at full immersion in oil, gas condensate and other wells, including long-term monitoring of oil and gas production process parameters.
The principle of operation of the transducer in pressure measurement is to measure the resonant frequency of the quartz resonator, which is a function of the pressure acting on the resonator. The conversion function is temperature dependent. To correct the temperature dependence, the temperature measurement results of a second quartz resonator whose resonant frequency is a function of temperature are used. The resonant frequencies of both resonators are measured after conversion to the low frequency region. Another highly stable quartz oscillator is used as a heterodyne, whose signal is also used to convert the frequencies proportional to pressure and temperature into a digital code.