Nova-Tech Digi–Sense 12-Channel Benchtop Scanning Thermometer User Manual
Page 56
55
Front panel displays and controls continued
How to calibrate to water
How to calibrate to water
Ice Point
Calibrate CALPT1 to the freezing point of water (0
°
C or 32
°
F) by using
crushed ice made of distilled water. Immerse the probe in a flask
(insulated) filled with crushed ice and topped off with distilled water.
Add crushed ice to keep the flask full of crushed ice and water during
calibration.
Boiling Point
Calibrate CALPT2 to the boiling point of water (100
°
C or 212
°
F) by using
distilled water and correcting for altitude and barometric pressure. As a
rule of thumb the boiling point of water decreases 1
°
C or 1.8
°
F for every
1000 feet above sea level. Correction for barometric pressure is usually
required only in the case of severe high or low pressure weather condi-
tions.
Note: This method is less accurate than using a dry block calibrator or a
thermocouple calibration furnace. Boiling point calibration is only recom-
mended when this equipment is not available and two point calibration is
required.
BA 50-59
10/12/01, 11:07 AM
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