Calibrating The Voc Sensor; Calibrating The Temperature Sensor; Calibrating The Humidity Sensor - Honeywell VA201T Calibration Handbook

Calibration Handbook
of duct CO2 concentration may be contaminated by ambient CO2 levels.

Calibrating the VOC Sensor

The VOC sensor automatically calibrates itself over a period of about a week
The automatic calibration requires that the VOC sensor be exposed to fresh air for at least one hour
of each day
No manual calibration for VOCs is possible
A bump test of wall-mount models may be performed be simply breathing on IAQPoint2

Calibrating the Temperature Sensor

1. Determine the true temperature of the space by use of a reference thermometer
2. Enter the level 2 password. By default, 2967
3. Navigate to Calibrate > Calibrate Temperature
4. Press [Target] to navigate to "Set Tgt Temp". Enter the temperature reported
by the reference thermometer
5. Press [Calibrate Offset]
6. Verify that the message "in base cal" is displayed. This lasts about two
seconds
7. Verify that the message "Calibration Done" is displayed
8. Press [X]
9. Verify that the Current temperature agrees with the reference thermometer. Note that this screen does
not automatically update. If desired, an update can be forced by exiting and re-entering this screen
10. If desired, the factory calibration may be restored by pressing [Revert to Factory Cal]
11. When satisfied, with the temperature reading, navigate to the main screen

Calibrating the Humidity Sensor

1. Determine the true rH level by use of a reference hygrometer
2. Enter the level 2 password. By default, this is 2967
3. Navigate to Calibrate > Calibrate rH
4. Press [Target] to navigate to "Set Target rH". Enter the relative humidity
reported by the reference instrument
5. Press [Calibrate Offset]
6. Verify that the message "in base cal" is displayed. This lasts about two
seconds
7. Verify that the message "Calibration Done" is displayed.
8. Press [X]
9. Verify that the Current rH agrees with the reference hygrometer. Note that this screen does not
automatically update. If desired, an update can be forced by exiting and re-entering this screen
10. If desired, the factory calibration may be restored by pressing [Revert to Factory Cal]
11. When satisfied, with the humidity reading, navigate to the main screen.
90 IAQPoint2