Instantaneous Temperature Measurement
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Authors
Praul, Samuel
Hmurcik, Lawrence V.
Issue Date
1973-05-11
Type
Article
Language
en_US
Keywords
Engineering , Temperature measurement
Alternative Title
Abstract
Measurement of temperature using a thermocouple or any other device requires a certain length of time. This time interval is of the order of magnitude of the thermal time constant of the measuring device. Here we describe an electronic circuit which makes the temperature measurement “instantaneous.” This is accomplished by combining the temperature at any instant with the rate of change of temperature. Thus the only limiting factor becomes the electronic time constant of the circuits involved. We have used our device in absolute measurement of optical power and have found that the typical time necessary for a temperature measurement can easily be 10 -3 x the thermal time constant of the measuring device.
Description
Copyright 1973 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
The following article appeared in Review of Scientific Instruments Vol. 44 No. 9 and may be found at http://scitation.aip.org/content/aip/journal/rsi/44/9/10.1063/1.1686387.
The following article appeared in Review of Scientific Instruments Vol. 44 No. 9 and may be found at http://scitation.aip.org/content/aip/journal/rsi/44/9/10.1063/1.1686387.
Citation
S. Praul, L. V. Hmurcik, "Instantaneous Temperature Measurement," Review of Scientific Instruments, vol. 44, no. 9, May 1973.
Publisher
American Institute of Physics
License
Journal
Volume
Issue
PubMed ID
DOI
ISSN
0034-6748