MNA0010, Revision B October 2014
26
value. Adjust the digital display to read the correct concentration of oxygen by pressing the
UP or Down arrows as required. Press the “MODE” button again to scroll past the “ALM1” ,
“ALM2”, and Fault Modes as indicated on the display.
Figure 26 Cal
Mode: A look at
the Display Panel
The Model 7100P Portable analyzer will resume normal RUN mode operation when the UP,
DOWN, or MODE buttons have not be pressed within a 120 seconds period.
For Two Point Calibration:
After the second calibration gas (500 to 750 ppm O2) has been applied to the analyzer and
the display has stabilized, press the “MODE” button. It will display “CAL” while depressed.
The Green RUN LED will flash. After releasing the button, the display will indicate an oxygen
concentration value. Adjust the digital display to read the correct concentration of oxygen by
pressing the UP or Down arrows as required.
Press the “MODE” button again to scroll past the “ALM1” , “ALM2”, and Fault Modes as
indicated on the display.
2.2.4 STEP 5 Set the Alarms:
After the unit has been calibrated on a known gas source, it is desirable to set the alarm
points. Scroll through the menu by pressing the “MODE” button until “ALM1” is displayed.
Adjust th
e up and down buttons accordingly. Then, press the “MODE” button again to scroll to
“ALM2”. Adjust the display as required.
See Ch
apter 3 under “Set Alarms”.
Notes: The alarms may be configured as Ascending or Descending Trip AND
Fail-Safe or Non-Fail-safe. See chapter 3 for a description of the settings and
the appendix to find out how to change the factory settings.
MODE
RUN
FAULT
ALM 1
ALM 2
9.9
T
RACE
O
XYGEN
MODEL 7100 O
2
Analyzer
Mini-Z
IRCONIA
S
ENSOR
NTRON