John_R Posted January 18, 2021 Report Share Posted January 18, 2021 Hey All, I'm working a a little home workshop playtime project... I'm using a V570 with a V200-18-E3XB snap I/O module. I "hand-rolled" some type T thermocouples (wires at the business end tightly twisted and soldered to create my TC junction). Each T/C is about 30 ft long, and a direct connection with the E3XB module. I find that the readings I get at room temp are about 8 deg F higher than I get with "real" thermometers. I know I can build an offset into my readings, but curious where the discrepancy lies; Does the solder (60/40) that flows through the twisted Copper/Constantan junction create an offset? Does this fall within the expected accuracy of the E3XB module? Or is it something else? Anyone have any input on this matter? Regards, JohnR Quote Link to comment Share on other sites More sharing options...
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