Monitoring apparatus for pressure sensitive devices

Details Monitoring apparatus for pressure sensitive devices Monitoring apparatus for pressure sensitive devices

1982-08-03

1984-08-14

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Photoelectric

250231P, G01L 708

Patent

active

044649363

ABSTRACT:
A monitoring apparatus for pressure sensitive devices is provided which detects the operating state of the monitored device, and which is designed to provide a reliable output even when operated in hostile, corrosive environments. The monitoring apparatus preferably includes a light source for transmitting a beam of light along a path of travel proximal to the monitored device, a light detector for detecting the light beam, and a member for adjusting the path of travel of the light beam in response to the actuation of the pressure sensitive device. Several alternative embodiments are disclosed.

REFERENCES:
patent: 3100997 (1963-08-01), Lorenz
patent: 3215135 (1965-11-01), Franke
patent: 3686958 (1972-08-01), Porter et al.
patent: 4408194 (1983-10-01), Thompson

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