Resetting Trimmers Back to Zero - HMD60 - HMD65

Computer with Windows operating system and Vaisala Insight software installed Vaisala USB cable 219690 for connecting the probe Small Phillips head screwdriver for turning the trimmer(s)

If you need to reset a trimmer back to zero (±0 point), use the Insight PC software to restore factory adjustments for the parameter the trimmer adjusts (RH or T).

1. Turn the trimmer(s) back to the middle position (±0 point)
2. Connect the transmitter to Insight. See Connecting to Insight software.
3. Select > Calibrate > Yes to switch the probe to calibration mode.
4. Select the parameter you want to reset (RH adjustment or T adjustment).
5. Select Restore factory adjustment and confirm by selecting Yes.
6. Reset each parameter (RH or T) separately as needed with the trimmer turned back to the middle position (±0 point). The trimmer adjustment now starts from the ±0 point of the default trimmer adjustment range (see Calibration and Adjustment Using Trimmers).