Auto Span - Honeywell GasAlert Max XT II User Manual

Auto Span

When auto zero is complete, APPLY GAS and
display, and flashes.
5. Connect the calibration hose to the regulator on the gas
cylinder (Figure 6.).
6. Attach the hose quick connector to the pump quick con-
nector to apply gas.
After 50% of the gas is detected on all sensors (within 30
seconds),
tor completes the span (approximately 2 minutes).
Successful Span
7. If the sensors have successfully passed the span, the
audible alarm beeps and continues with calibration. Pro-
ceed to Calibration Due
continues to flash while the detec-
Date.
Unsuccessful Span
If the sensor(s) fails the span, the following screen displays.
Refer to the following for possible causes and solutions.
The detector will not span a sensor if
• gas is not applied to the sensor,
• 50% of the expected gas concentration is not detected within the
first 30 seconds, or
• the gas concentration drops below 50% of the expected gas level
during the 2-minute span.
If gas is applied to a sensor and the detector fails to span the sensor,
perform the following:
• Repeat the calibration using a new gas cylinder.
• Repeat the calibration using a new 0.5 l/min regulator or a new
demand flow regulator.
• If the sensor fails the span a second time, replace the sensor.
Refer to Replacing a Sensor or Sensor
GasAlertMaxXT II
Calibration
Filter.
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