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Heatpipe Furnace Models 17702W, 17702P, 17702S (13
–
07/20)
ELIMINATING CONTAMINATION DURING THE CALIBRATION OF
HIGH TEMPERATURE THERMOMETERS
It is quite feasible to heat a high temperature thermometer to 1000°C and return it to ambient temperature
without altering the water triple point resistance value by more than 0.5mK equivalent.
Instructions in the Isotech 962 and 96178 thermometer manuals explain how to handle and keep clean the
thermometers. It is imperative that procedures are followed because contaminants can penetrate and pass
through physically-intact quartz sheaths at temperatures above 800°C.
