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1620A "DewK" Thermo-hygrometer
User's Guide
9.4
134
2626-S Temperature Calibration Points
Temperature
15°C
25°C
35°C
2626-S Relative Humidity Calibration Points
Relative Humidity
20%
45%
70%
2626-H Temperature Calibration Points
Temperature
16°C
20°C
24°C
2626-H Relative Humidity Calibration Points
Relative Humidity
20%
45%
70%
Temperature and Humidity Measurement Errors
The temperature and humidity measurement errors for the sensor are obtained
at each of the calibration points. This test is performed to obtain as found data
for the calibration report, if necessary, and adjustment data, and then repeated
after adjustments are made to obtain as left data for the calibration report. Tem-
perature measurements are in degrees Celsius. For each calibration point Tn
and RHn, do the following:
1. Set the temperature and humidity set-point.
2. Allow four hours for settling after the temperature and humidity
set-points are reached before collecting data.
at Relative Humidity
45%
45%
45%
at Temperature
25°C
25°C
25°C
at Relative Humidity
45%
45%
45%
at Temperature
20°C
20°C
20°C
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