Magnetic pressure indicator with thermal lockout

Details Magnetic pressure indicator with thermal lockout Magnetic pressure indicator with thermal lockout

1978-10-30

1979-10-30

Ruehl, Charles A.

Electricity: circuit makers and breakers

Fluid pressure

Piston

116220, 116221, 116267, 116268, 200 82C, 210 90, G01L 914

Patent

active

041729714

ABSTRACT:
A magnetic differential pressure indicator is provided for detecting and indicating a pressure differential thereacross that is greater than a predetermined value in a fluid system. A thermal lockout effective even at high internal fluid pressures prevents false actuation of the magnetic indicating means at low temperatures due to increased viscosity of the system fluid.

REFERENCES:
patent: 2942572 (1960-06-01), Pall
patent: 3077176 (1963-02-01), Pall
patent: 3077854 (1963-02-01), Pall
patent: 3125062 (1964-03-01), Raupp
patent: 3140690 (1964-07-01), Siebel
patent: 3187711 (1965-06-01), Campolong
patent: 3364897 (1968-01-01), Mouwen
patent: 3785332 (1974-01-01), Silverwater
patent: 3815542 (1974-06-01), Cooper
patent: 3841259 (1974-10-01), Parkinson
patent: 4026153 (1977-05-01), Silverwater

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