Prosense PQ Series User manual

ProsensePQSeriesQuickInstallationGuide
PRS‐QIG‐PQ‐EN‐Rev.01‐11.2018

Detector connections
Prosensedetectorspreconfiguredtoprovidesignalfromanalogueoutputdependingon
thedetectorandgastype:
Function Value/Setting Meaning
 2.0mA Fault
 2.0mAto2.5mA Warm‐up
Signaloutput 3mA Calibrationmode
 4.0mAto20.0mA Normalgasmeasurement
 21.0mA Maximumoverrange
Table1:Detectorsignalleveldetails
DetectorMainboardandconnectiondetailsgiveninDiagram‐1:


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Diagram1:Detectormainboardandconnections
Sensorconnectionsareinputtodetectormainboardandalreadyconnectedtosensor
insidethesensorhead.DetectorconnectionsarelistedinTable‐2:
Port Usage
V+ Powerinput(+)12VDC–24VDC
V‐ Powerinput(‐)12VDC–24VDC
S CurrentOutputSignal(4mA–20mA)
RS485‐A SerialconnectionportA
RS485‐B SerialconnectionportB
Table2:Detectoroutputportsandtheirusage
SensorConnections
S
V‐
V+
RS485‐B
RS485‐A
Battery
RelayModule
Connections
Displaymodule
Connections
RS485terminationpins
PowerLED

ProsensePQSeriesQuickInstallationGuide
PRS‐QIG‐PQ‐EN‐Rev.01‐11.2018

Detector Configuration
TheProsensePQdetectorhas4‐20mAanalogueoutputandRS485Modbusserial
communicationoutputfeaturesonmainboard.Itispossibletoinstalloptionalrelay
moduletohavethreerelayoutputsfortwoalarmlevelsandfaultstatus.
4‐20mAoutput:
Thedefaultconfigurationprovidessingle4‐20mAsignaloutput.Prosensedetectorscanbe
connectedtocontrolpanelsonthemarkethaving4‐20mAinputsignal.Signalwiringfrom
detectorandthecontrolpanelshouldbecarriedoutbyshieldedcables.Wirescross
sectiondependsonthedistancebetweenthecontrolpanelandthedetector.Thedetails
giveninpowercablingarevalidaswellforsignaloutput.Pleaseavoidanyinterruptionin
caseanyjunctionsonwires.Theshieldistobegroundedfromthecontrolpanelsideonly
andneverconnecttheshieldtothedetector.Pleasemakesureclutchingorcrimping
apparatusarenotloosenoroxidized.
TogettheanalogueoutputsignalcorrectlyandconstanttheloadresistoronSoutput
shouldbebetween100‐500Ohmsifthepowersourceisgreatedthan15VDC(15‐24VDC)
atdetectorinput.Ifthepowersourceisbelow15VDC(12‐15VDC)theloadresistoronS
outputshouldbebetween100‐300Ohms.Iftheloadresistorbelow100Ohmsthe
detectorwillbehaveastheSoutputisinshortcircuitstatusandenabletheautomatic
outputsavingmoderesultingwithreducingsignallevelto2mA.
Commissioning
WARNING:Thefollowingprocedureshouldbefollowedcarefullyandonlyperformedby
suitablytrainedpersonnel.
Thefollowingprocedurerequiresthedetectorcovertoberemovedwhilecarryingout
supplyvoltagechecks.Therefore,theappropriatepermitstoworkshouldbesoughtin
preparation.PriortocarryingoutanyHOTWORKensurelocalsecurityandsiteprocedures
arefollowed.Ensurethattheassociatedcontrolpaneloutputactuationisinhibitedsoasto
preventfalsealarms.Followbelowstepsforcommissioning:
1. Removethedetectorcover
2. Configurethedetector'sanalogueoutputsignalandpowerinputconnectionscorrectly
3. Checkthatallelectricalconnectionsareterminatedcorrectly
4. SwitchOntheexternalpowersupplytofeedthedetector
5. UsingaDigitalMultiMeter(DMM),checktheSupplyVoltageattheterminalsV+(24V)
andV‐(0V),thisshouldbeaminimumsupplyvoltageof12VDC(Maximumsupply
voltageis24VDC)
6. CheckLEDstatusondetectormainboard.LEDwillbeilluminatedrightafterapplying
power.LEDwillstartblinkingtwiceinasecondduringthewarm‐upperiodand
analogueoutputsignalwillprovide3mA.
7. IfusingPQDcheckLCDscreen.Itwillrunselfchecktestsandreporttheresults.Alltests
shouldendwithOK.IncaseofanyERRORmessagecontactProsense.Whentest

ProsensePQSeriesQuickInstallationGuide
PRS‐QIG‐PQ‐EN‐Rev.01‐11.2018

completedLCDscreenwillshowmonitoringscreenwithdetectorinformationand
WARMUPmessageonstatusline.TheFaultLEDislitinthisperiod.
8. Waittwominutestocompletewarm‐upperiod.IfusingPQD,WARMUPmessagewill
beremovedfromstatuslineandfaultLEDgoneoff.TheLEDonmainboardwillstart
blinkingonceinasecondandanalogueoutputsignalwillbe4mA.
9. SwitchOfftheexternalpowertothedetector.
10. Fitthecoverandmakesurenoneofthecablescauseanobstructionwhilefittingcover
11. Switchonexternalpowertothedetector.
ElectricalSpecifications:
InputVoltageRange 12to24VDC(24VDCnominal)
MaxPowerConsumption Max4Watts.at24VDC
Currentoutput 4‐20mA
2.0mA Fault
2.0mAto2.5mA Inhibit(duringconfiguration/warming)
3mA Calibrationmode
4.0mAto20.0mA Normalgasmeasurement
21.0mA Maximumoverrange
Terminals 3xscrewterminalssuitableforwirediameter0.5mm²to2.5mm²
(20AWGto13AWG).
2xscrewterminalssuitableforwirediameter0.5mm²to2.5mm²
(20AWGto13AWG)forRS485digitaloutput
Relays 3x(1A30VDC,0.5A125VAC,0.3A80VDC).Selectablenormallyopenor
normallyclosed(switch)andde‐energized.
Communication RS485,ModbusRTU
Table3:Electricalspecifications
DetectorBodySpecifications:
Material
Epoxypaintedaluminiumalloyjunctionbox,316‐StainlessSteelSensor
Head
Weight AluminiumAlloy:2kg(withSteelSensorHead)
Mounting Wallmounting
Entries ½NPTand¾NPT(or2x¾NPT)fieldcableentries,¾NPTsensorentry
Table4:Detectorbodyspecifications
Environmental:
IPRating IP65inaccordancewithEN60529:1992
Operating
Temperature ‐20ºCto+70ºC/‐4ºFto+120ºF
OperatingHumidity Continuous20‐90%RH(noncondensing)
Intermittent10‐99%RH(noncondensing)
OperatingPressure 90‐110kPa
StorageConditions ‐30°Cto+70°C(‐22°Fto+158°F)
Table5:Environmentalspecifications


ProsensePQSeriesQuickInstallationGuide
PRS‐QIG‐PQ‐EN‐Rev.01‐11.2018

SAFETY INSTRUCTIONS FOR HAZARDOUS AREA INSTALLATION
ProsensePQseriesgasdetectorsareprojectedandbuiltaccordingtoATEXDirective2014/34/EUwith
referencetostandardEN60079‐0,EN60079‐1.“ATEX“,bytheFrench"ATmosphereEXplosible”,providesthe
technicalrequirementstobeappliedtoequipmentintendedforuseinpotentiallyexplosiveatmospheres.The
scopeofdirectiveistoremovetechnicalbarrierstotradebetweenMemberStatesoftheEuropean
Community.TheProsensePQseriesgasdetectorsmustbeinstalledandmaintenanceaccordingtothesuitable
standardsforelectricalapplicationinpotentiallyexplosiveatmospheres(example:EN60079‐14,EN60079‐17
orothernationalstandards).Readthisinstructionfirstandkeepthisinstructionmanualalwaysavailable.
ThefollowinginstructionsapplytoequipmentcoveredbyATEXcertificatenumber:
1.ProsensePQseriesgasdetectorsmaybeinstalledinhazardousareawithflammablegases,vapours,and
mist,groupII,category2G,maximumsuperficialpermissibletemperature70°C.
Devicecategory2G,IdentificationII2G
ExdbIICT6Gb(Tamb=‐20°C:+70°C)
Itmeans: (EuropeanCommunitylogoforATEXapplications)–groupII(potentiallyexplosiveatmospheres
–surfaceapplication–OTHERthanmines)
 Category2G(G=>Gas)–Zone1andZone2
 Exdb=>protectionmode:explosionproofenclosure
 IIC=>definekindofgases
 T6=>Temperatureclass‐‐Maximumallowablesurfacetemperature.
 IP65=>Mechanicalprotectiondegree–protectionagainstsolid,dustandliquid.
2.Suitablytrainedpersonnelshallcarryoutinstallationinaccordancewithapplicablecodepractice.
3.Theelectricaldevicesmustbegroundedusingtheirgroundingconnections.Thegroundingconnectionmust
beATEXcertified,suitablefortheapplicationrequired,substances,maximumsuperficialtemperature,and
ambienttemperature.
4.Theusershouldguaranteeperiodicalcleaningoftheplacesweredustcanstoragetoavoidthepalingupto5
mm.
5.Theusershouldnotrepairthisequipment.
6.Theusershouldguaranteethekeepingofthesafetycharacteristicofthedeviceaftermaintenanceof
repairing.
7.Iftheequipmentislikelytocomeintocontactwithaggressivesubstances,itisresponsibilityoftheuserto
takesuitableprecautionsthatpreventitfrombeingadverselyaffected,thusensuringthatthetypeof
protectionisnotcompromised.
Aggressivesubstances:exampleAcids,liquid,gaseswithcanaffectedmetals
8.Toguaranteetherespectoftheprotectiondegreecableglands,blankingelementsandthreadadaptersshall
becertifiedExcomponentsaccordingtoprotection“db”andablankingelementshallnotbeusedwithan
adapter.
9.SinterreplacementshallbedonebyanapprovedtechnicalservicepersonalaccordingtoPQSeriesuser
manual“Sinterreplacement”procedure(PRS‐UM‐PQ‐EN‐Rev.02‐10.2018page44).
10.O‐ringismadeofSiliconeandcontinuousoperatingtemperatureis‐50Cto105C
11.Iftemperatureexceeds70ºCatentryor80ºCatbranchingpointusesuitablyratedcableandcableglands
orconductorsinconduit.
12.Thicknessofouterpaintingisbetween40µm–180µm.
13.MaximumpowerconsumptionofthedetectorwithoptionalboardsinstalledisPmax=4Wwhere
Imax=335mAandVmax=24VDC.
14.Allelectricalconnectionsshouldbemadeinaccordancewithanyrelevantlocalornationallegislation,
standardsorcodesofpractice.Prosensedetectorscanoperatebetween12‐24VDC.Theconnection,
grounding,cablingdetailsareexplainedinthisguideatrelevantsections