FIBRE-OPTIC END TRANSDUCER (VERSIONS) Russian patent published in 2014 - IPC G01L11/02 

FIELD: instrumentation.

SUBSTANCE: invention relates to instrumentation and can be used for measurement of gas and fluid pressure, both static and dynamic. Pressure transducer consists of at least one fibre Bragg grating written on optical fibre, membrane and case. Note here that said membrane is rigidly connected to wave guide to displace in axial line relative to said case. Optical guide is rigidly connected to case end in its axial line. Besides, this transducer can consists of membrane, case, at least one fibre Bragg grating written on optical fibre, base fastener, end load application element and guide. Note here that said base fastener and said load application element are connected with fibre so that connection does not contact with said Bragg grating while the guide is connected with base fastener and case while membrane is secured in said case. End load application element contacts with membrane in axial line.

EFFECT: smaller weight and overall dimensions, higher accuracy of measurements, simplified design.

23 cl, 2 dwg