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Article #2703Re: *** Thermal sensor needed.
From: Paul Gerard de Jong
Date: Fri, 10 Apr 1992 06:15
Date: Fri, 10 Apr 1992 06:15
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afpauls@lims01.lerc.nasa.gov (PAUL SCHWARTZ) writes: >My suggestion is to install thermocouples on each wing and connect the in >opposition (reverse series) so the two minus leads on the thermocouples >are connected together. The voltage across the two positive leads would be >proprotional to the temperature difference between the wing tips. The >polarity would indicate which wing is warmer. A high gain amplifier driving >a analog meter might work very well. The only thing I'm not sure about is >if the thremocouples would respond fast enough to temperatures to make the >system useful. You can get small thermocouples with timeconstants close to a second, so that would be no problem. Type K thermocouples are 40uV/C (22 uV/F), so you would need to amplify about a factor 1000 to drive some analog meter, or LCD DVM. Bart.
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Path: arc1-ca.pugleaf.net!sparky!news.UU.NET!mcsun!sun4nl!fwi.uva.nl!gene.fwi.uva.nl!pdejong From: pdejong@fwi.uva.nl (Paul Gerard de Jong) Newsgroups: sci.electronics Subject: Re: *** Thermal sensor needed. Message-ID: <1992Apr10.061552.16854@fwi.uva.nl> Date: 10 Apr 92 06:15:52 GMT References: <1992Apr2.021633.1@woods.ulowell.edu> <9APR199215422283@lims01.lerc.nasa.gov> Sender: news@fwi.uva.nl Organization: FWI, University of Amsterdam Lines: 17 Nntp-Posting-Host: gene.fwi.uva.nl