DIFFERENTIAL PIEZOELECTRIC TRANSDUCER Russian patent published in 1998 - IPC

FIELD: measurement technology. SUBSTANCE: transducer has body 1 which accommodates piezoelectric elements 2,3 with electrodes 4,5,6,7 separated by insulator 8 made of piezoelectric material (piezoelectric element-insulator) and two-wire cable with two screens 9,10. External screen 9 of cable is connected electrically to body 1, and internal screen 10 is connected to external electrodes 5,7. Wires 11, 12 are connected to internal electrodes 4, 6. External electrodes 5,7 of piezoelectric elements are insulated from body 1 by means of insulators 13, 14. EFFECT: higher interference suppression. 1 dwg