LIQUID AND GAS PRESSURE SENSOR Russian patent published in 2025 - IPC G01L1/14 

FIELD: measuring.

SUBSTANCE: invention relates to instrumentation and can be used for measuring fluid or gas pressure. Sensor has a cylindrical housing on one end of which a membrane is mounted and on the other end there is a bottom. Pin with communication loops for connection of measuring circuit is installed on the bottom coaxially to the housing. Sensor is equipped with two flat discs that form capacitor plates. First disc is represented by the end surface of the pin installed at the bottom of the housing; the second disc is represented by the central part of the membrane. Calibrated recess is made on the end surface of the pin, and the measuring circuit is represented by a self-contained generator connected to a communication loop and an electronic frequency meter.

EFFECT: improved characteristics of accuracy, temperature stability and linearity.

1 cl, 3 dwg