Chapter 1. Getting Started
Model PM880 Portable Hygrometer User’s Manual 11
1.4.2a Entering Probe ID
1. If the menu is not active, press [MENU].
2. Use the arrow key to scroll to Program and press [ENTER].
3. Use the arrow key to scroll to Calibrate and press [ENTER].
4. Use the arrow keys to scroll to the Probe ID tab and press [ENTER]. A 
screen similar to Figure 4 appears.
Figure 4: Probe ID Window
5. Use the arrow keys to scroll to S/N and press [ENTER].
6. Use the numeric keys to enter the serial number from the Calibration 
Data Sheet and press 
[ENTER]. The serial number also appears on the 
hex nut of the moisture probe.
7. Use the arrow keys to scroll to the suffix box and press [ENTER] to open 
the drop-down list.
8. Use the arrow keys to scroll to the desired suffix and press [ENTER].
9. Press [F3] (OK) to exit.