RAEGuard
S
EC / LEL / IR User’s Guide
Optional:
To access span calibration from the Reading Display,
press
[MODE]. After “Zero” appears on the screen, press
[MODE] a second time to advance to span calibration.
Optional:
To access span calibration after zero calibration has
already started, press any key to advance to span calibration.
Optional:
To exit the calibration menu, press
[-] to return to the
Reading Display.
Note:
It is not necessary to exit manually. After 60 seconds of idle time,
the RAEGuard
S
automatically returns to the Reading Display.
2. Turn on the gas flow. First, let gas flow into the sensor for 30
seconds before span calibration.Then press
[+]
to start
calibration. The “Span” LED starts blinking. The “Span” message
alternates with a countdown timer.
Note:
Wait for the entire countdown for a complete calibration.
Optional:
Before the countdown reaches zero, you may press
any key to interrupt span calibration and return to the Reading
Display.
3. Once the countdown reaches zero, the “Span” LED stops
blinking.
4. If the sensor sensitivity is unacceptable, the screen alternately
flashes a “Span” and “FAIL” message until any key is pressed.
Note:
If span calibration fails, it may be necessary to replace the
sensor.
5. You may choose to press
[-] or [MODE] to return to zero
calibration and restart the entire calibration process, or press [+]
to go to the Reading Display.
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