Apparatus for monitoring the condition of a filter

Details Apparatus for monitoring the condition of a filter Apparatus for monitoring the condition of a filter

1974-12-23

1976-01-27

Queisser, Richard C.

Signals and indicators

Alarms

Fluid flow

55274, 116 67R, 116DIG25, 340239F, G01D 2100

Patent

active

039345432

ABSTRACT:
An apparatus for monitoring the condition of a fluid filter comprises a flexible diaphragm exposed to the upstream, downstream or differential pressure acting on the filter and indicator means for monitoring the condition of the filter as a function of movement of the diaphragm in response to said pressures. A unique, low friction indicator mechanism, means for adjusting the sensitivity of the device and means for resetting the device are also disclosed.

REFERENCES:
patent: 410502 (1889-09-01), Donner
patent: 2700362 (1955-01-01), Calling
patent: 2746416 (1956-05-01), Aufderheide
patent: 2815733 (1957-12-01), Rykert
patent: 2843077 (1958-07-01), Leefer
patent: 3104542 (1963-09-01), Scoggins
patent: 3853086 (1974-12-01), Asplund

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