61
GasAlertMicro 5/PID/IR
Calibration and Setting Alarm Setpoints
Verification
1. After calibration is complete and the detector returns
to normal operation, verify the calibration by using a
gas cylinder other than the one used for calibration.
2. The gas concentration should not exceed the sensor's detec-
tion range. Confirm that the LCD displays the expected con-
centration values.
3. To ensure the reading is accurate, apply the verification gas for
the same amount of time as was applied to the sensor when it
was calibrated.
Example:
SO
2
span time 2 minutes therefore, apply
verification gas for 2 minutes.
Unsuccessful Span
If the sensor(s) did not span successfully, refer to the following sections
for possible solutions:
•
•
•
•
Failed Span
If a sensor fails the span, the following error message displays.
If the sensor is not calibrated, it displays as
FAIL
in normal operation the
next time the detector is activated.
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