FIELD: measurement technology. SUBSTANCE: device has two fibre- optical converters which cases house flexibly deformed fibre coils. End face of one of them has temperature sensitive element in the form of bimetal membrane, end face of the other converter has metal membrane. Fibre coils are mounted for contact with membranes and are optically matched with light source and two photodetectors. Signal from first photodetector is proportional to hydrostatic pressure and signal from second photodetectors is proportional to temperature and hydrostatic pressure. Photodetectors are connected to inputs of differential amplifier connected to recorder. EFFECT: increased functional reliability of device. 2 cl, 1 dwg
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