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Hi everyone! I have a an SA1-RTD from Omega.com I found lying around and wanted to try and use it.  It's the 3 wire version with 1 red lead and 2 black leads.  I was wondering if someone could help me figure out how to test if this still works.  I've tried using a multimeter across the red and both black leads, but i get nothing.  I have continuity between both the black leads though.  I'm stumped lol.

Oh, the link to mfg is here:

http://www.omega.com/ppt/pptsc.asp?ref=sa1-rtd
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This site gives a pretty good explanation:

http://www.rdfcorp.com/anotes/pa-rtd/pa-rtd_04.shtml

Basically, you'll need to apply a voltage across the black leads and measure the RTD output at the red lead.

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The Ruggeduino: compatible with Arduino UNO, 24V operation, all I/O's fused and protected
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Sweet! Thanks RuggedCircuits! Im gonna try it out tomorrow when I get home
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Hi everyone! I have a an SA1-RTD from Omega.com I found lying around and wanted to try and use it.  It's the 3 wire version with 1 red lead and 2 black leads.  I was wondering if someone could help me figure out how to test if this still works.  I've tried using a multimeter across the red and both black leads, but i get nothing.  I have continuity between both the black leads though.  I'm stumped lol.

Oh, the link to mfg is here:

http://www.omega.com/ppt/pptsc.asp?ref=sa1-rtd

An RTD is just a resistor that changes with temperature at a known rate. If you don't read a resistance between the red and either black wire then the platinum element is open and thus useless.

Lefty
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