XNX Universal Transmitter
Section 3 - Calibration
104
6. Apply the span gas. As the sensor detects the gas and the
concentration increases, the values displayed will reect the
changing concentration. When the concentration values are
stable, select
✓
to perform the span. The Span Calibration
process also determines whether the sensor is within the proper
range to accurately detect the target gas.
7. Selecting
✖
will cancel the span calibration and return to the
Gas Calibration menu.
8. When the sensor has completed the calibration and the span
algorithms have determined that it is within range, the Span
Passed screen will appear.
Figure 199. Span Passed Screen
If the calibration is not successful, the Span Failed screen will
display. Selecting
✓
will return to the Span Concentration screen
to begin the span calibration again. Selecting
✖
will exit Span
Calibration and return to the Gas Calibration Menu.
Arrow indicates
gas value is too
low
Figure 200. Span Calibration Failed
Once the zero gas and span calibrations are completed successfully,
the user will be prompted to:
• exit with inhibit off
• exit with inhibit on, or
• not exit.
Figure 201. Span Calibration Failed
Warning: When the transmitter is placed in Inhibit Mode, alarms are silenced. This will prevent an
actual gas event from being reported. Inhibit Mode must be limited to testing and maintenance only.
Exit Inhibit Mode after testing or maintenance activities.
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