Testing apparatus for a dual pressure indicator and control unit

Details Testing apparatus for a dual pressure indicator and control unit Testing apparatus for a dual pressure indicator and control unit

1982-03-05

1983-04-19

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73168, G01N 2700

Patent

active

043801668

ABSTRACT:
The testing apparatus comprises two pressure regulators, two pressure gauges or an optional dual pressure gauge, and valve mechanism. In one embodiment the valve mechanism comprises two valves, namely a power actuated three-way air valve and a power actuated four-way air valve controlled by a mode selector. In an alternative embodiment, the valve mechanism comprises a single three-way air valve controlled by a mode selector. The valves are illustrated in the drawings as solenoid operated valves controlled by electrical selector switches. The testing apparatus has an input line or conduit connectable to two pressure ports of a dual pressure indicator and control unit for pasteurizing equipment. In either embodiment illustrated, actuation of the mode selector places the testing apparatus selectively in tracking or differential test modes. In the tracking mode, both output lines are connected to the input line through a single one of the pressure regulators to thereby apply to the output lines identical pressures determined by a single pressure regulator. In the differential mode, the output lines are connected to the input line through respective ones of the two pressure regulators to thereby apply to the output lines pressures determined by the individual pressure regulators. The entire testing apparatus is self-contained in a portable case.

REFERENCES:
patent: 3089331 (1963-05-01), Sharko et al.
patent: 4114426 (1978-09-01), McLean
patent: 4181016 (1980-01-01), Shapink

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