Honeywell XNX-UT Series User Manual

XNX Universal Transmitter Quick Start Guide
41
NOTE:
In the nal stages of boot-up, warnings and faults may be observed
until the user performs the proper conguration, calibration, and reset
activities described in the following sections. See Sections 11 and 12 for
descriptions of warnings and faults.
5. WhentheXNXcompletesboot-up,performasoftresetontheExcel
fromtheCalibrationMenu.
6. SetthePathLengthfortheapplication,thenalignthetransmitter
andreceiverwithAlignExcel.
7. Oncethealignmentiscomplete,aZeroCalibrationmustbe
performedontheExceltocompletethecommissioningprocess.
(SeetheSearchlineExcelTechnicalManualforcalibration
informationP/N2104M0506).
8. ResetanyfaultsdisplayedontheXNXdisplay.TheXNXandExcel
arenowreadytomonitor.
XNX Remote Calibration for MPD Sensors
In addition to functional gas testing to ensure the system is operating properly,
remote calibration for the MPD CB1catalytic combustible sensor and MPD IV1
and MPD IF1 infrared combustible sensors can be performed provided the follow-
ing requirements are met:
 Remote sensor is installed in an indoor environment
 Internal air velocity does not exceed 0.5 m/s
 Weather housing part number 0200-A-1640 is installed on the sensor housing
 A 1 LPM regulator is used for calibration gas delivery
The remote calibration procedure should be performed in accordance with
Section 6.1 with the exception of the weather guard, part number 0200-A-
1640, which should be used instead of the regular flow housing, part number
1226A0411.
Honeywell Analytics recommends MPD sensor calibration at a maximum interval
of 180 days (the XNX default value). This value can be reprogrammed in accord-
ance with site procedures to assure the highest level of safety. Correct operation
of each sensor should be confirmed before each use by calibration with a certi-
fied test gas of known concentration. In addition, the pellistors used in flammable
gas sensors can suffer from a loss of sensitivity when in the presence of poisons
or inhibitors, e.g., silicones, sulfides, chlorine, lead, or halogenated hydrocar-
bons.
1
Special states that inhibit the transmitter from detecting gas are indicated as 2 mA on
analog outputs.

Honeywell XNX-UT Series Specifications

General

Brand	Honeywell
Model	XNX-UT Series
Category	Transmitter
Language	English