Zero Gas Calibration; Span Calibration - Honeywell XNX Safety Manual

XNX Universal Transmitter

6.2.2.1 Zero Gas Calibration

Sensor Reading
at Current Settings
Figure 4. Zero Gas Calibration Screen
As the sensor detects the zero gas and the concentration
increases, the values displayed will reflect the changing
concentration. When the concentration values are stable
select to allow the XNX to calculate the zero adjustment.
✓
Selecting will return to the Gas Calibration Menu.
✖
Figure 5. Zero Gas Calibration in Progress
3. If the Zero Gas Calibration is successful, the Zero Passed
screen displays.
Figure 6. Zero Gas Calibration Passed
Proof Testing Procedure

6.2.2.2 Span Calibration

NOTE:
If a Span Calibration is not required, select
Calibration and return to the Calibration Menu.
1. When the Zero Gas Calibration is complete, the Span
Concentration screen appears. The gas concentration for
the Span Gas Calibration can be changed.
If the Span Calibration is skipped, the Gas Calibration screen
displays.
Figure 7. Span Gas Concentration Screen
2. Enter the concentration of the span gas by selecting
choose the first digit and use the
or decrement the values. Use
and move to the next digit. Continue until all digits have
been selected.
Sensor Reading
at Current Settings
Figure 8. Span Calibration Screen
3. Apply the span gas. As the sensor detects the gas and the
concentration increases, the values displayed will reflect 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
10
to skip the Span
✖
to
✓
switches to increment
to accept the new value
✓
Calibration Gas
Concentration
Adjusting