Operation
MSA
ALTAIR 4X
GB
25
Temperature Changes
The sensors have built-in temperature compensation. However, if temperature
shifts dramatically, the sensor reading may shift. Zero the device at the work site
temperature for the least effect.
3.2
Turning on the Device
For more information, see the flow charts in [
chapter 7].
Turn the device on with the
ON/OFF
button.
The device performs a self test and then goes to Fresh Air Setup:
- all display segments are activated
- audible alarm sounds
- alarm LEDs light
- vibrating alarm is activated.
During the self test, the device checks for missing sensors. In the case of a missing
sensor, the device displays the Sensor Missing screen and alarms until it is turned
off. Otherwise, the turn-on sequence continues.
The device displays:
- Alarm & display self test
- Manufacturer name
- Device name
- Software version
- Sensor discovery
- Combustible gas type
- Toxic gas units
- Alarm set points [PEAK, MIN] [STEL, TWA]
- Calibration values
- Date and time display
- Last cal date [if activated]
- CAL due date [if activated]
- Fresh Air Setup option.
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