Vaisala HMP155 - Manual (Page 60)

USER'S GUIDE____________________________________________________________________
58 _______________________________________________________________ M210912EN-C
0801-076
Figure 13 HMP155 Adjustment Buttons
The following numbers refer to Figure 13 above:
1 = Protective cover (unscrewed)
2 = Down button
3 = ADJ button
4 = Up button
5 = Protective plug (lifted up)
There is a two-color indicator LED located under the protective plug and
next to the Down button, see Figure 13 above. The LED is green and red.
NOTE If you are using a warmed probe (HMP155 active output version option),
probe heating will be interrupted when ADJ button is pressed, see
Figure 13 above. Allow sufficient time for the probe to reach ambient
temperature before starting the adjustment procedure.
NOTE Fixed pressure compensation value of 1.01325 bar is used when in
adjustment mode.