LIQUID-FILLED PRESSURE GAUGE Russian patent published in 2006 - IPC G01L7/18 

FIELD: measuring engineering.

SUBSTANCE: pressure gauge comprises U-shaped tube with transparent lids and reading device made of a laser interferometer composed of laser, semitransparent mirrors, solid mirror, photodetectors, and units for processing signals. The semitransparent mirrors are mounted at the extension of the axes of the U-shaped tube. The pressure gauge is additionally provided with the indicator and unit for summing codes whose inputs are connected with outputs of the units for processing signals and outputs are connected with the indicator.

EFFECT: enhanced accuracy of measurements.

1 cl, 1 dwg