Pressure temperature sensor

Details Pressure temperature sensor Pressure temperature sensor

1985-05-01

1986-12-30

Crosland, Donnie L.

Communications: electrical

Selective

Having indication or alarm

340611, 340614, 340626, 340 59, 731181, 73708, 73714, 73729, 374203, 374145, 374146, 200 83C, 200 83D, B60Q 100

Patent

active

046332138

ABSTRACT:
A pressure-temperature sensor for monitoring a fluid system for an over-temperature, an under-pressure or an over-pressure condition. The sensor includes a bellows operator enclosed in a fluid-filled housing with a normally-closed, first switch means and a normally-open second switch means. A diaphragm operator and a bellows are responsive to changes in temperature and pressure to, respectively, operate the first and second switches to indicate an over-temperature, an under-pressure or an over-pressure condition.

REFERENCES:
patent: 1815642 (1931-07-01), Zubaty
patent: 1933453 (1933-10-01), Schlaich
patent: 2985870 (1961-05-01), Lindberg, Jr.
patent: 3302171 (1967-01-01), Sensing
patent: 3338099 (1967-08-01), Remick, Jr. et al.
patent: 3439356 (1969-04-01), Kinzer
patent: 3852546 (1974-12-01), Maxwell, Jr. et al.
patent: 3956935 (1976-05-01), Ford
patent: 4051728 (1977-10-01), Metz
patent: 4375764 (1983-03-01), Lawford et al.

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