Technical Manual
XNX Universal Transmitter
Appendix A - HART
®
Protocol
175
Calibration
The calibration menu permits calibrating zero or span and
bump testing. Additionally, when tted with a Searchline EXCEL
sensor, the Calibrate menu displays the optical signal strength
for mechanical alignment. The gas calibrate operation is shown
below.
Figure 245. Gas Calibrate Method
Caution: Do not back out of a menu selection while a calibration is in progress.
Conguration
All user settings of the XNX transmitter can be made either at
the local user interface or over HART. The conguration menu
facilitates convenient setup of alarm levels as shown in Figure
246. Methods are also provided to set time, units, and other
parameters.
Figure 246. Set Range and Alarm
Conclusion
The XNX HART interface adds value by facilitating remote
operation of Honeywell Analytics gas sensors. All functions
available locally are also available over HART.