Honeywell XNX Technical Manual

XNX Universal Transmitter
Introduction
5
Safety
Readandunderstandthismanualbeforeinstalling,operating,or
maintainingtheXNXTransmitter�Payparticularattentiontothe
warningsandcautionsbelow�Allofthewarningsandcautions
shownherearerepeatedintheappropriatesectionsofthe
manual�
Warnings
• Installationmustbeinaccordancewiththerecognizedstandardsofthe
appropriateauthorityinthecountryconcerned.
• Accesstotheinteriorofthesensor,whencarryingoutanywork,must
onlybeconductedbytrainedpersonnel.
• Beforecarryingoutanyworkensurelocalregulationsandsite
proceduresarefollowed.Appropriatestandardsmustbefollowedto
maintaintheoverallcertificationofthesensor.
• Toreduceriskofignitionofhazardousatmospheres,conduitrunsmust
haveasealfittingconnectedwithin18inches(45cm)oftheenclosure.
• Toreducetheriskofignitionofhazardousatmosphere,disconnectthe
equipmentfromthesupplycircuitbeforeopeningthesensorenclosure.
Keepassemblytightlyclosedduringoperation.
• NeveropentheXNXenclosureunderpowerunlesstheareaisknownto
benonhazardous.
• Thesensormustbeearthed/groundedforIntrinsicSafety,electrical
safetyandtolimittheeffectsofradiofrequencyinterference.Earth/
groundpointsareprovidedinsideandoutsidetheunit.EMInote
forapplicationsusingshieldedcable:Cableshieldterminations
mustbemadeatthecableglandswithsuitableEMItypeglands.
AvoidterminatingcableshieldsattheEarthgroundluginsidethe
XNXenclosure.Incaseswherewiringisinpipe,ashieldedcableis
notrequired.Theexternalterminalisonlyasupplementalbonding
connectionwherelocalauthoritiespermitorrequiresuchaconnection.
• TakecarewhenhandlingECsensorcellsastheymaycontaincorrosive
solutions.
• Donottamperorinanywaydisassemblethesensorcells.
• Donotexposetotemperaturesoutsidetherecommendedrange.
• Donotexposethesensortoorganicsolventsorflammableliquids.
• Attheendoftheirworkinglives,sensorsmustbedisposedofin
anenvironmentallysafemanner,inaccordancewithlocalwaste
managementrequirementsandenvironmentallegislation.DoNOT
incineratesensorsastheymayemittoxicfumes.
• Highoff-scalereadingsmayindicateanexplosiveconcentrationofgas.
• Verifyalloutputs,includingdisplay,afterinstallation,afterservice
events,andperiodicallytoensurethesafetyandintegrityofthesystem.
• DonotusetheXNXUniversalTransmitterinoxygen-enriched
atmospheres.Concentrationsdisplayedwillbeadverselyaffectedby
oxygendepletion.
• Afterchangingparameterswithahandhelddevice,verifythatthe
parametersettingsarecorrectatthetransmitter.
• Thefactory-setpasscodesmustberesettopreventunauthorized
accesstothetransmitter’smenus.
Warnings: Identifyhazardousorunsafepracticeswhichcould
resultinsevereinjuryordeath.

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