ALTAIR 2X
38
Use
GB
Devices must be calibrated:
- after subjected to physical shock,
- after any extreme changes in the atmospheric temperature,
- after use under high gas concentrations,
- if the bump test/FAS failed,
- at certain intervals by local procedures.
Calibration mode can be entered after the info screens have been displayed
(see Fig. 10).
(1) Press button for one second to access the information page.
(2) When ZERO? is displayed, press the button for a zero calibration.
- During the setup, the hour glass, the no calibration gas icon and the meas-
ured gas concentration are displayed.
- If the zero cal operation fails, ERR is displayed. The device returns to normal
operation after a button press.
- If the zero calibration is successful, PASS is displayed followed by SPAN?.
(3) During the SPAN? display, press the button to start the calibration mode.
(4) Feed test gas into the device:
Connect the regulator (screwed on the calibration gas cylinder) and the
sensor opening with a tube and open the regulator.
Possible test gases Section 7.
- The current gas reading, hour glass and calibration gas cylinder icon are
displayed.
- If calibration is successful PASS is displayed and the device returns to
normal operating mode.
If no zero calibration is carried out, the device returns to normal
operating mode.
WARNING
The concentration of the test gas used must match the stipulated in
Section 5.2 to calibrate the sensor correctly.
For two gas detectors, only calibration gas mixes can be used to calibrate the
sensor correctly.
An incorrect calibration can lead to serious personal injury or death.
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