PRESSURE TRANSDUCER Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: immobile plate 5 is inserted into pressure transducer having case 1 with pipe union 2, membrane 3, delay lines on surface acoustic waves, surface acoustic wave generators. Immobile plate 5 is produced on membrane 3, delay line is formed on each side of plate. Distance from plated section 4 and delay line on immobile plate 5 is equal to not more than quarter length of surface acoustic wave. Pressure transducer also has pulse formers. Resistive heaters 12 are formed on immobile plate 5 and membrane 3. Electric circuit of transducer is supplemented with controlling generator, register and network composed of counter-register, code subtracter, reversible counter and electronic key connected in series. Resistive heaters are coupled to output of electronic key. EFFECT: expanded application field, enhanced operational reliability. 2 cl, 4 dwg