How do I wire a 4 wire RTD to a 3 wire input on a control? | ISE Frequently Asked Questions
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How do I wire a 4 wire RTD to a 3 wire input on a control?
Author: Administrator - Reference Number: AA-00320 Views: 31851 Created: 2008-04-29 08:01 Last Updated: 2013-01-04 17:04 0 Rating/ Voters
You can connect a 4 wire RTD to a 3 wire instrument.  Just use 3 of the wires.  Generally a (4) wire RTD will have 2 white wires and 2 red wires.  The active element is between a red and a white wire.  The remainig wires are for lead wire resistance compensation. 
 
Red -------------|VVVVVVVVVVV|------------------------White
Red________|
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