Ripple‐free liquid‐nitrogen level controller for long‐term operation
作者:
K. Srinivasan,
J. Altin,
期刊:
Review of Scientific Instruments
(AIP Available online 1983)
卷期:
Volume 54,
issue 6
页码: 759-761
ISSN:0034-6748
年代: 1983
DOI:10.1063/1.1137470
出版商: AIP
数据来源: AIP
摘要:
This article describes the design features, construction, and operation of a liquid‐nitrogen level controller which can be used continuously over a period of several weeks. Liquid level is sensed by pairs of thermistors mounted on a dip stick. Replenishing of liquid nitrogen is achieved as a result of self‐pressurization of a tank containing the cryogen. The transfer system ensures a ripple‐free liquid surface during the replenishing operation. This level controller has been a part of a cryostat for diffusion measurements in liquefied inert gases.
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