The example above shows the CO sensor is 6 days past due.
Press to acknowledge the warning before returning to normal operation. Refer
to See "Troubleshooting" on page98 for more information. and calibrate the failed
sensor again.
Verification
1. After calibration is complete and the detector returns to normal operation, verify the
calibration using a gas cylinder other than the one used for calibration.
2. The gas concentration should not exceed the sensor's detection range. Confirm that the
LCD shows the expected concentration values.
3. To ensure the readings are accurate, apply the verification gas for the same amount of
time as was applied to the sensor when it was calibrated.
Example: H
2
S span time 2 minutes therefore, apply verification gas for 2 minutes.
BW MaxXT II 79 User Manual
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