Honeywell XNX Technical Manual

XNX Universal Transmitter
Section 4 - Maintenance
106
4.2.2 Replacing with a Different Cartridge Type
Toreplacethecellwithacellforadifferentgas,followthis
procedure:
1�Unscrewtheweatherproofcover,loosenthesensor
retainerlockingscrew,andunscrewthesensorretainer�
2�Removetheoldsensorbypullingwithouttwisting�
3�Unscrewthesensorcap�
4�Removetheoldcellbypullingwithouttwisting�
5�Plugthenewcellintothesensor,takingcaretoalignthe
sensorpinswiththeconnectorholesinthePCB�
6�Retthesensor,takingcaretoalignthesensorpinswith
theconnector�
7�Retthesensorretainer,tightenthelockingscrew,and
rettheweatherproofcover�
8�Thetransmitterwillentersensorwarm-upmode�However,
duetothechangeinsensorcelltype,thetransmitter
willnotentermonitormodeuntiltheunithasbeen
recongured�Thedisplaywillshowthesensorwarm-up
screen:

Figure 229. Sensor screens during warmup
Notethemessage“G:TBV:O2”�“TBV”indicatesthatthe
operatormustrecongurethetransmittertorecognize
thenewsensorcell�“O2”willreectthetargetgasofthe
newcell,i�e�,H2S,NO2,etc�Thedisplaywillalsoalternate
thewarm-upscreenwiththeFault151screen�This
indicatesthatthecommunicationbetweenthetransmitter
andtheoriginalcellisnolongerrecognized�Thisfault
conditionwillclearafterthetransmitterhasbeenproperly
recongured�
TherecongurationoftheXNXforanewcell/targetgasis
achievedthroughAcceptNewSensorType�Recalibrate
thesensorfollowingtheproceduresinSection3�2�2�
4�2XNXECSensorCartridgeReplacement

Honeywell XNX Specifications

General

Ingress Protection	IP66/67
Product Type	Universal Transmitter
Enclosure Rating	IP66/67
Display	LCD
Communication Protocols	HART, Modbus, Foundation Fieldbus
Power Supply	24 VDC nominal, 18-32 VDC
Operating Temperature	-40°C to +65°C (-40°F to +149°F)
Material	Aluminum or Stainless Steel
Gas Types	Toxic, Oxygen, and Combustible gases
Output	4-20 mA
Relays	3 programmable relays
Approvals	ATEX, IECEx, UL, CSA
Sensor Compatibility	Electrochemical, catalytic, infrared, and other sensor types