Honeywell XNX Quick Start Manual page 48

3. If the Zero Calibration is successful, the XNX Universal Transmitter
will display the Zero Passed screen.
Span Calibration
NOTE:
If a Span Calibration is not required, select the
Calibration and return to the Calibration menu.
4. When the Zero Calibration is complete or it is skipped, the Span
Concentration screen appears to indicate the concentration value
of the gas used for calibration.
5. Select
✓
or decrement the values. Select
the next digit. Continue until all 3 digits have been selected.
Sensor Reading
at Current Settings
6. Select
✓
and the concentration increases, the sensor reading values in the
display will change to reflect the changing concentration.
7. When the concentration values stabilize, the gas concentration
as read by the installed sensor is stable. At this time, the gas
readings are taken by the sensor. The Span Calibration process
also determines whether the sensor is within the proper range to
accurately detect the target gas.
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.
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. will exit Span Calibration and return to the Main Calibrate screen.
✖
Arrow indicates
gas values too low
Once the Zero and Span calibrations are completed successfully, the XNX will exit
the calibration procedure. Before returning to the Gas Calibration menu however,
the user will be prompted to exit with inhibit off, exit with inhibit on, or not exit.
48
Figure 45. Span Gas Concentration screen
to choose the first digit and use the switches to increment
Figure 46. Span Calibration screen
then apply the target gas. As the sensor detects the gas
Figure 47. Span Calibration Failed screen
✖
to accept the new value and move to
✓
Calibration Gas
Concentration
Selecting '' returns to
the Span Concentration
screen
XNX Universal Transmitter Quick Start Guide
to skip the Span