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GasAlert Extreme
Calibration and Setting Alarm Setpoints
If the span fails confirm that
•
gas is being applied to the sensor,
•
the sensor is detecting a sufficient gas
concentration within 30 seconds, and
•
the gas concentration has not dropped significantly
during the 2-minute span.
If the span is still unsuccessful, attach a new gas cylinder.
If the span continues to be unsuccessful, replace the sensor.
Refer to Replacing the Battery or Sensor.
Setting the Calibration Due Date
After a successful calibration, the LCD displays the CAL.
DUE screens and the number of days remaining before the
next calibration is due.
BW Technologies recommends that the detector be
calibrated every 180 days (6 months). The detector
is shipped with the factory default setting of
180 days.
8.
Press D or E to scroll to the required value
(1 to 365).
9.
Press C to save the new value and automatically
proceed to the TWA alarm setpoint screen.
Note
If the new value is not confirmed within 10 seconds
after selecting, the detector automatically retains
the existing value. The new value that is selected
becomes the default value.
Setting the TWA Alarm Setpoint
Note
To bypass and retain the current TWA alarm
setpoint value, press C. The LCD automatically
proceeds to the STEL alarm setpoint.
Note
To bypass the calibration due notification, press C.
The LCD automatically proceeds to the TWA alarm
setpoint.
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