FIELD: measurement equipment.
SUBSTANCE: invention relates to non-indicating manometers. A pressure sensor to read pressure of process fluid medium comprises a sensor body exposed to pressure of process fluid medium. The sensor body is deformed in response to pressure. A membrane suspended in the sensor body has tension, which varies in response to deformation of the sensor body. The resonant frequency of the membrane is measured. The measured resonance frequency is the index of pressure in the manifold of the process liquid medium and integrity of the system of separating filling liquid medium. Apart from measurement of resonant frequency, as the facility of diagnostics for assessment of condition of sensor quality, the mode of oscillations itself may be used.
EFFECT: increased accuracy of measurements.
20 cl, 5 dwg
