PIEZOELECTRIC FORCE TRANSDUCER Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: transducer has a piezoelectric element with a force input unit made in the form of a support washer coupled with a lever rocker in the grooves of which movable rollers are positioned, indication device made in the form of a capacitor located in an axial channel of transparent dielectric housing between the plates of which electroconductive particle is located. One plate of the capacitor serves as one electrode of the piezoelectric element and is made in the form of a metallic disk diameter of which is greater than diameter of the housing axial channel. The other plate is movable and coupled with the other electrode of the piezoelectric element. EFFECT: enhanced accuracy. 4 dwg, 1 tbl