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A pressure regulator with pneumatic-electric control

โœ Scribed by I.S. Sidorenko; G.P. Shemonaev; V.I. Makhan'kov

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
212 KB
Volume
12
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

The aim of the work was to develop a pressure control system which could maintain the vapour pressure over the surface of liquefied gas in a cryostat within the range 760 to 5 mm Hg to an accuracy no worse than 0.03 mm for at least 30 min, while the evaporation rate varied from 0.5 cm 3 s "1 to 100 cm 3 s "1.

Existing regulators, described by Walker, 1 diaphragm, 2 and bellows 3 regulators are not suitable for maintaining a fixed pressure for even small changes in gas flow (evaporation rates) from a cryostat, quite apart from the fact that the statement of the problem presupposes large pressure changes in the cryostat.

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