Electric signal transmitter for vibrating-wire sensor

Details Electric signal transmitter for vibrating-wire sensor Electric signal transmitter for vibrating-wire sensor

1980-06-19

1983-10-18

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

73DIG1, G01L 110

Patent

active

RE0314161

ABSTRACT:
A force-measuring instrument of the vibrating-wire type wherein the mechanical components are located at the force-measuring location and the vibrating wire is coupled through a two-wire transmission line to electronic circuitry at a distant location. The electronic circuitry includes means to excite the vibrating wire and to produce a d-c measurement output signal corresponding to the frequency of vibrations. The electronic circuitry further includes function-generating means to establish a closely-linear relationship between the output current and the force applied to the wire. Means also are incorporated in the electronic circuitry for adjusting the zero and span of the instrument, and this can be done without interaction between the adjustments.

REFERENCES:
patent: 2513678 (1950-07-01), Rieber
patent: 2926247 (1960-02-01), Palmer
patent: 3046789 (1962-07-01), Boss
patent: 3067615 (1962-12-01), Holmes
patent: 3071725 (1963-01-01), McWaid
patent: 3483753 (1969-12-01), Loeb
patent: 3543585 (1970-12-01), Brown
patent: 3683684 (1972-08-01), Judlowe

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