Device for measuring displacement

Details Device for measuring displacement Device for measuring displacement

1990-06-13

1991-07-23

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

73290R, 377 17, G01F 2300

Patent

active

050333003

ABSTRACT:
A device for measuring displacement comprises a pair of sensor elements of which output voltage changes stepwise in dependency upon displacement of a measurement object, a differentiating circuit for detecting time points at which the output voltage of the pair of sensor elements suddenly changes, and a counter for counting the sudden change time points of the output voltage detected by the differentiating curcuit.

REFERENCES:
patent: 3552209 (1971-02-01), Johnston
patent: 4283719 (1981-08-01), William et al.
patent: 4284951 (1981-08-01), Dahl et al.
patent: 4554831 (1985-11-01), Sealey et al.
patent: 4628302 (1986-12-01), Barr et al.
patent: 4646569 (1987-03-01), Cosser
patent: 4698828 (1987-10-01), Hiramoto
patent: 4799047 (1989-02-01), Saitoh

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