VIBRATORY PRESSURE GAUGE Russian patent published in 2011 - IPC G01L11/00 

FIELD: machine building.

SUBSTANCE: vibratory pressure gauge consists of pressure tight closed case, of sensitive element inside case sensing pressure of measured medium through membrane unit. The sensor element forms a closed mechanical oscillating system of a camertone type, of sensor for oscillation recording and of sensor for oscillation excitation, of an amplifier connected with its input to the sensor of oscillation recording, while with its output coupled with the sensor for oscillation excitation. The sensor element is made as a primary converter consisting of two coaxial pipes of similar height and of different diametre interconnected with their lower bases and with their interconnected upper bases fastened to the case via a bellows unit. The sensor of oscillation recording and the sensor of oscillation excitation shifted relative to each other at 90 degrees are screwed into an external pipe of the primary converter. With its output the amplifier is connected to the converter the output of which is tied with the secondary instrument reflecting pressure level of measured medium.

EFFECT: upgraded accuracy and reliability of measurement under conditions of pressure tight volume.

2 dwg