PRESSURE GAUGE WITH HYDRAULIC PRESSURE TRANSMISSION Russian patent published in 2010 - IPC G01L19/00 

FIELD: measuring technology.

SUBSTANCE: invention concerns pressure gauges with hydraulic pressure transmission, particularly for using in high temperatures. A pressure gauge includes a sensor unit (1) with a sensing body (3) which contains a measuring cell chamber (6) wherein there is a pressure measurement cell (5) provided. Said pressure measurement cell (5) can be pressurised through the first hydraulic chain filled with a transferring liquid, and a transferring unit for pressure transfer to the first hydraulic chain, and the transferring unit (2) has a second hydraulic chain filled with the transferring liquid that runs from a working membrane (12) through the transferring body (10) to the transferring membrane (13) which is tightly fixed on the transferring body (10); and the sensing body (3) is sealed to the transferring body, while the transferring membrane (13) connects the first hydraulic chain thereto, so pressure of the second hydraulic chain through the transferring membrane can be transferred to the first hydraulic chain.

EFFECT: protection of electronic structural component and measuring cells against high working temperatures.

13 cl, 2 dwg