3.2.1.4 Step-4: Calibration – Calibrate the Model 1100
Note: The analyzer will show “CAL” for a short time followed by a reading. Do not press the UP or
DOWN arrow unless you intend to calibrate the analyzer.
After a regulated stream of calibration gas has been applied to the sensor, press the “MODE” key
one time and then release. The 7-segment alphanumeric display will show “CAL”, and then an
oxygen concentration value. Adjust the displayed oxygen concentration value to read “20.9” by
pressing the “UP” or “DOWN” arrow key as required. After reaching “20.9”, press and release the
“MODE” key four times to return to Run mode.
3.2.1.5 Step-5: Return the Oxygen Sensor to On-line Service
When the calibration procedures are completed, the model 1100 is ready to return to service.
Disconnect the calibration gas from the oxygen sensor by completely removing the installed 1/8"
FNPT fitting from the sensor flow-through head sample inlet port. If a calibration manifold has not
been installed, reconnect the sample inlet port to the process for in-service oxygen measurement
(section 2.1.2.2). If an alternate vent connection has been used, reconnect the sensor flow-
through head sample exhaust port to the primary vent source (section 2.1.2.3). Be sure to flow
sample gas to the sensor until the analyzer display has stabilized to allow sufficient time to sweep
the sample lines clear of the calibration gas.
3.2.2 SET/VIEW ALARM-1 Mode
To enter Set Alarm-1 mode from run mode using the keypad; scroll through the user mode menu
by pressing momentarily the “MODE” key two (2) times, until the 7-segment alphanumeric display
reads “AL1” (set alarm-1 level), and the “RUN” and “ALM1” indicator LED’s flash. The display will
show momentarily “AL1” and then the current alarm-1 threshold level (an O
2
concentration). Use
the “UP” and “DOWN” keys to adjust the alarm-1 setpoint level. Changed settings are
automatically saved when the “MODE” key is pressed to enter the next mode.
3.2.3 SET/VIEW ALARM-2 Mode
To enter Set Alarm-2 mode from run mode using the keypad; scroll through the user mode menu
by pressing momentarily the “MODE” key three (3) times, until the 7-segment alphanumeric display
reads “AL2” (set alarm-2 level) and the “RUN” and “ALM2” indicator LED’s flash. The display will
show momentarily “AL2” and then the current alarm-2 threshold level (an O
2
concentration). Use
the “UP” and “DOWN” keys to adjust the alarm-2 setpoint level. Changed settings are
automatically saved when the “MODE” key is pressed to enter the next mode.
3.2.4 VIEW ACTIVE FAULTS Mode
To enter View Active Faults mode from run mode using the keypad; scroll through the user mode
menu by pressing momentarily the “MODE” key four (4) times until the 7-segment alphanumeric
display reads “FL”, and the “RUN” and “FAULT” indicator LED’s flash. The display will show
momentarily “FL” and then the highest priority active system fault. Press and release the “UP” or
“DOWN key to scroll through all active system faults. Refer to section 4.3.1 for a complete fault
code listing, and troubleshooting guide. To exit, press and release the “MODE” key.
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