R
1 wire.
Sorry I could not resist.
Look here:
http://www.crouse-hinds.com/CrouseHinds/resources/intrinsically_safe/techref
/article2.cfm
Description of 2 vs. 3 wire RTD is half way down the page.
Sorry I could not resist.
Look here:
http://www.crouse-hinds.com/CrouseHinds/resources/intrinsically_safe/techref
/article2.cfm
Description of 2 vs. 3 wire RTD is half way down the page.