6.
Press [Y/+] to start calibrating. You can abort the calibration at any time during the
countdown by pressing [N/-].
After a timer countdown, the span calibration is done. The LCD will display whether the
calibration was successful and the reading for that calibration gas.
Note: If the sensor calibration fails, try again. If calibration fails repeatedly, turn off the
instrument and then replace the sensor.
WARNING: Do not replace sensors in hazardous locations.
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User Manual