8�1 Calibration; Calibration Procedure - Honeywell XNX Quick Start Manual

8.1 Calibration
WARNING
Do not use the XNX Universal Transmitter in oxygen-enriched atmospheres.
Concentrations displayed will be adversely affected by oxygen depletion.
CAUTION
The calibration procedure should only be performed by qualified personnel.
NOTE:
The default calibration values for the "Calibration Required" diagnostic
vary based on sensor type. This value can be reprogrammed in
accordance with site requirements to ensure the highest level of safety.
Correct operation of each sensor/detector should be confirmed using
calibration with a certified test gas of known concentration before
commissioning. See Section 9 - Sensor Data for calibration gas
specifications.

8.1.1 Calibration Procedure

NOTE:
Follow the specific procedure outlined in the Operating Manual for each
sensing device. The Zero Calibration procedure should be performed
prior to the Span Calibration procedure.
1. If using compressed gas cylinder, attach the calibration gas flow
housing onto the bottom of the sensor and apply the gas.
2. Access the calibration mode. The Gas Calibration menu is for both
Zero and Span Calibration.
Zero Calibration
at Current Settings
Figure 44. Zero Calibration in
Progress
XNX Universal Transmitter Quick Start Guide
Figure 42. Gas Calibration menu
Sensor Reading
Figure 43. Zero Calibration screen
Select
detects the gas and the concentration increases, the
values displayed will reflect the changing
concentration. Selecting
Calibration menu.
then apply the zero gas. As the sensor
✓
will return to the Gas
✖
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