Thermostat Control by Resistance Thermometer
作者:
James J. Zwolenik,
John E. Lind,
Raymond M. Fuoss,
期刊:
Review of Scientific Instruments
(AIP Available online 1959)
卷期:
Volume 30,
issue 7
页码: 575-576
ISSN:0034-6748
年代: 1959
DOI:10.1063/1.1716685
出版商: AIP
数据来源: AIP
摘要:
By intercepting on a selenium cell part of the light beam from the galvanometer in the bridge circuit of the resistance thermometer used to measure bath temperature, a signal is obtained which is used to trigger a photo‐relay via a secondary galvanometer. The photo‐relay controls the heating current in the thermostat. Design of the selenium cell mounting and accompanying circuits are described. The device holds a 50‐gal thermostat to 25° within a hunting amplitude of 0.002°C.
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