GX-2012 Operator’s Manual Leak Testing • 93
Peak Hold Mode
Peak Hold Mode allows the user to view the peak methane reading
for the operating session while viewing the current methane reading.
To enter Peak Hold Mode:
1. Turn the GX-2012 on as described in “Turning On the GX-2012,
Leak Check Mode” on page 83. Select the desired display range. In
the example below, 500 ppm has been selected.
2. Press and hold the RESET SILENCE button until the Peak Hold
Mode screen displays.
The current methane reading is displayed on the first line. The
“PH” shown on the second line indicates that the GX-2012 is in
Peak Hold Mode. The peak methane reading is displayed on the
third line. The full scale value is displayed on the fourth line.
3. The peak reading displayed while in Leak Check Mode will appear
in the Peak Hold Mode screen.
4. If the highest reading recorded is higher than the full scale value,
the full scale value will be displayed. If the full scale value is
changed to something higher, the real value for the peak will be
displayed.
5. To reset the peak, press and hold the RESET SILENCE button until
you hear a beep, then release it.
6. To exit Peak Hold Mode and return to Leak Check Mode, press and
hold the RESET SILENCE button until you hear the GX-2012’s
second beep and the Leak Check Mode Screen displays.
Snap Log Mode, Leak Check Mode Operation
The snap logging function in Snap Log Mode allows the user to record
data at a specific time and have it saved to the data logger. The data is
assigned a snap log ID and is saved with the station ID that was
selected when the data was taken.
To enter Snap Log Mode and record snap log data:
400
PH
500
500
ppm
ppm
ppm
LEAK CK MODE
CH4
F.S.
PEAK
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