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Temperature Standard Probe - Temperature Reference Standard

Highly accurate traceable temperature reference standard for calibrating sensors from -196 to 420C with an accuracy of +/- 0.025, the IRTD temperature standard probe provides a 4 to 1 ratio for calibrating sensors to 0.100C.

https://www.kayeinstruments.com/en/calibration-references/the-htr-and-ltr-series-3/kaye-irtd-400-intelligent-rtd-secondary-standard