Liquefied gas leakage calibration source

Details Liquefied gas leakage calibration source Liquefied gas leakage calibration source

1978-01-10

1979-10-30

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

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

G12B 1300

Patent

active

041723783

ABSTRACT:
A calibrated gas source for testing leakage indicators composed of a housing divided into two chambers by a partition having a gas passage between the chambers, a mass of liquefied gas filling one of the chambers, a valve associated with the passage for permitting gas to pass from the one chamber to the other chamber when it is under a certain excess pressure, and a capillary passage between the other chamber and the surrounding environment.

REFERENCES:
patent: 3209579 (1965-10-01), Roberts
patent: 3516278 (1970-06-01), Klein et al.

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