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North-Holland Publishing Company HELIUM GAS PURITY MONITOR FOR RECOVERY SYSTEMS*

By S. L. Garrett, G. W. Swift (a and R. E. Packard

Abstract

An inexpensive, direct reading, electro-acoustical system is described wh±ch continuously monitors the amount of air present in helium gas being returned to a recovery/re-liquification installation. Contamination as small as 0.1 % is easily detectable. A common problem with the use of helium recovery systems is the inadvertent introduction of air into the recovery lines. We have constructed a device which determines gas purity b

Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.352.9267
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