Servicing the PM880 8-9
August  2003
Entering Reference Data
IMPORTANT: Do not change these values without consulting 
GE Panametrics.
The PM880 requires reference values for its measurement 
circuitry for moisture and pressure inputs. The references are 
factory calibration values. (Please contact GE Panametrics for 
more information.) To enter the option, scroll down to the 
References entry in the Service Menu and press 
[ENTER]. The 
screen appears similar to Figure 8-8 below.
Figure 8-8:  The Hygrometry Tab in the References 
Option
Entering Hygrometry Reference Values
1. The first prompt asks for the high reference value.
a.  Press 
[ENTER] to open the text box. 
b. Use the numeric keys to enter the value recorded on the 
rear of the PM880.
c. Press 
[ENTER] to confirm the entry.
2. Press the [
T] key to move to the low reference value, and 
repeat steps a, b and c to enter the value.
References
Cancel
OK
Hygro Pressure
High Ref
Low Ref
1
0.175