OPTICAL PRESSURE GAUGE Russian patent published in 1998 - IPC

FIELD: designing of instruments and systems of metrological control. SUBSTANCE: pressure gauge has casing which accommodates sensing element, cut-in rod coupled to membrane assemblies dividing the casing into three chambers. It also includes optical device connected to fiber-optical cable. Optical device is made as Michelson interferometer, beam splitter of which represents sectional cube, and moving and fixed reflectors are triplet prisms. Moving reflector is rigidly secured to rod, and the latter is provided with springs fixed between membrane assemblies and face walls of casing. EFFECT: higher measurement accuracy. 2 cl, 2 dwg