Rae Q-RAE, Operation And Maintenance Manual

Page: 62 / 170

PROGRAMMING
4 - 14
pressing
[Y/+]
to start the calibration manually. When
the countdown timer reaches 0, the display shows the
sensor name and the calibrated value:
CO cal’ed
reading = 50 ppm
If no gas has reached the sensor after 60 seconds, the
display shows “No gas flow…” and aborts the
calibration.
Note: The reading should be very close to the span gas
value. After about 5 seconds pause, the display will
show the message “Span Cal Done! Turn Off Gas.”
3.
This completes the single gas calibration procedure for
one sensor. The display shows the single gas
calibration sub-menu for a user to select another sensor
or move to the next calibration sub-menu.
4.
Turn off the flow of gas. Disconnect the calibration
adapter from the Q-RAE Monitor.
5. Repeat Step 1 to Step 4 to calibrate the next sensor.
6. Press
[MODE]
any time during Step 2 to reduce waiting
time. If the sensor failed the calibration, the sensor
name and an error message “failed, continue?” will
appear. Press
[N/-]
or
[MODE]
to abort the calibration
and move directly to the next sub-menu item. Press
[Y/+] to continue single gas calibration. In either case,
the current calibration data will not be changed.