Fine offset WH2810 - Page 16

Color Screen Multi-channel Weather Station User Manual
16
appear in the upper right hand corner of the display).
The calibration sequence would be as below:
1. CH1 Outdoor temperature calibration.
2. CH1 Outdoor humidity calibration.
3. CH2 Outdoor temperature calibration.
4. CH2 Outdoor humidity calibration.
5. CH3 Outdoor temperature calibration.
6. CH3 Outdoor humidity calibration.
7. Indoor temperature calibration.
8. Indoor humidity calibration.
9. Absolute pressure calibration.
In calibration mode, press + and - buttons to adjust offset values, then press
SET/CH to confirm and proceed to next parameter. Press the ALARM
button to cancel offset values.
Example 1:
The calibrated temperature from a red spirit thermometer, or actual
temperature is 30.0 °C
The uncalibrated or measured temperature is 28.7 °C.
Offset = Calibrated Temperature – Uncalibrated Temperature = 30.0 – 28.7
= 1.3 °C.
Enter the temperature offset +1.3 °C.
Example 2:
The calibrated absolute pressure from a calibrated pressure sensor, or
actual absolute pressure is 28.61 inHg.
The uncalibrated or measured absolute pressure measured by the weather
station is 28.66 inHg.
Offset = 28.66 – 28.61 = -0.05 inHg
Enter the absolute pressure offset -0.05 inHg
Note: The absolute pressure offset will also affect the relative pressure.
To adjust the relative pressure, only (independent of the absolute
pressure), reference Section 5.1.