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Alternate method for achieving temperature control in the -160 to +90 Celcius rangeA single-pass method for accurate and precise temperature control in the -160 to +90 C range is discussed. The method exhibited minimal set-point overshoot during temperature transitions. Control to +/-2 C with transitions between set-points of 7 C per minute were achieved. The method uses commercially available temperature controllers and a gaseous nitrogen/liquid nitrogen mixer to dampen the amplitude of cold temperature spikes caused by liquid nitrogen pulsing.
Document ID
19950019127
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Johnson, Kenneth R. (Jet Propulsion Lab. California Inst. of Tech., Pasadena, CA., United States)
Date Acquired
August 16, 2013
Publication Date
March 7, 1995
Subject Category
Instrumentation And Photography
Accession Number
95N25547
Funding Number(s)
CONTRACT_GRANT: NAS7-918
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-5,394,704|NASA-CASE-NPO-18995-1-CU
Patent Application
US-PATENT-APPL-SN-152631

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