𝔖 Bobbio Scriptorium
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An electronic vapour pressure controller

✍ Scribed by R. Fletcher

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
270 KB
Volume
17
Category
Article
ISSN
0011-2275

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✦ Synopsis

A system is described in which the vapour pressure of a liquid He 4 bath is monitored by a capacitance gauge, the output of which is used to control the pumping rate of the vapour pump. The pressure is regulated to an accuracy of O. 1% or better over the range 3-1000 mm Hg and the system is usable clown to at least I mm Fig. The controlled pressure is completely insensitive to magnetic field.

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