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Periodic calibration check

Both the temperature Thermistor and associated electronics are very stable and should not require any calibration after the initial factory adjustment.

 

Long term stability of the ROTRONIC Hygromer IN-1 humidity sensor is typically better than 1 %RH per year. For maximum accuracy, calibration of the HF1 should be verified every 6 to 12 months. Applications where the HF1 is exposed to significant pollution may require more frequent verifications. Calibration and adjustment of the HF1 can be done with a PC with the SW21 or HygroSoft software installed. For routine calibrations the probe should be checked at one or two points. The electronics of the transmitter do not normally require calibration in the field. The electronics cannot be repaired in the field and should be returned to the manufacturer in the case of problems.