HK Instruments RHT Installation guide

INSTALLATION

INSTRUCTIONS

HUMIDITY TRANSMITTERS

RHT Duct Series

• READ THESE INSTRUCTIONS CAREFULLY BEFORE

ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS

DEVICE.

• Failuretoobservesafetyinformaonandcomplywith

instruconscanresultinPERSONALINJURY,DEATHAND/OR

PROPERTY DAMAGE.

• Toavoidelectricalshockordamagetoequipment,disconnect

powerbeforeinstallingorservicinganduseonlywiringwith

insulaonratedforfulldeviceoperangvoltage.

• Toavoidpotenalreand/orexplosiondonotuseinpotenally

ammableorexplosiveatmospheres.

• Retaintheseinstruconsforfuturereference.

• Thisproduct,wheninstalled,willbepartofanengineered

systemwhosespecicaonsandperformancecharacteriscs

arenotdesignedorcontrolledbyHKInstruments.Review

applicaonsandnaonalandlocalcodestoassurethatthe

installaonwillbefunconalandsafe.Useonlyexperiencedand

knowledgeabletechnicianstoinstallthisdevice.

ThankyouforchoosinganHKInstrumentsRHTDuctseriesrelave

humiditytransmier.TheRHTseriesisintendedforuseincommer-

cialenvironmentsinHVAC/Rapplicaons.

RHTDuctisarelavehumiditytransmierwithtemperatureoutput

installedinairvenlaonduct.Inaddiontothesemeasuredvalues,

RHTDuctcalculatesvariousparameterssuchasdewpoint,mixing

rao, enthalpy and absolute humidity. Illuminated display ensures

easyreadability alsofrom adistance.The RHT hasa screwless lid

andaneasilyadjustablemounngangethatmaketheinstallaon

ofthedeviceeasy.

RHTDuctseriesdevicesarecommonlyusedtomonitorandcontrol:

•Relavehumidityandtemperaturelevelsofincomingandreturnair

invenlaonsystem

SPECIFICATIONS

Performance

Measurement ranges:

Temperature:-30...80°C,sensor

Relavehumidity:0–100%

Accuracy:

Temperature:<0.5ºC

Relavehumidity:±2...3%at0...50°Cand10–90%rH

Totalerrorbandincludesaccuracy,hysteresisand

temperatureeectover5...50°Cand10–90%rH.

Technical Specicaons

Media compability:

Dryairornon-aggressivegases

Measuring units:

°Cand%rH

Measuring element:

Temperature:NTC10k

Relavehumidity:Thermosetpolymercapacive

sensingelement

Environment:

Operangtemperature:0...50°C

Storagetemperature:-20...70°C

Humidity:0to95%rH,noncondensing

Physical

Dimensions:

Case:119x95.5x45mm

Probe:L=188mm,d=12mm

Mounng:

Withange,adjustable40...155mm

Weight:

150g

Materials:

Case:ABS

Cover:PC

Probe:ABS

Mounngange:LLPDP

Protecon standard:

IP54

Electrical connecons:

4springloadedterminals

(24V,GND,OUT1*,OUT2*)

0.2–1.5mm2(16–24AWG)

A-model:

2addionalspringloadedterminals

formA-output(OUT1*,OUT2*)

0.2-1.5mm2(16-24AWG)

*DefaultOUT1=rH,OUT2=TE

Outputsselectableonthedisplay:

temperature/dewpoint/mixingrao/

enthalpy/absolutehumidity/relavehumidity

Electrical

Supplyvoltage:24VACorVDC±10%

Currentconsumpon:max90mA(at24V)+10mAfor

eachvoltageoutput

Outputsignalsforeverymedia:

0/2...5/10VDC,LoadRminimum1kΩ

OnlyA-model:

4...20mA,LoadRmaximum500Ω,minimum20Ω

Outputcalibratedwithin±0.08mA

Conformance

Meetstherequirementsfor:

  CE:  UKCA:

EMC:  2014/30/EU S.I.2016/1091

RoHS:  2011/65/EU S.I.2012/3032

WEEE:  2012/19/EU S.I.2013/3113

INTRODUCTION

APPLICATIONS

WARNING

RoHS

COMPLIANT

SCHEMATICS

DIMENSIONAL DRAWINGS

INSTALLATION

STEP 1: MOUNTING THE DEVICE

1)Mountthedeviceinthedesiredlocaon(seestep1).

2)Routethecablesandconnectthewires(seestep2).

3)Thedeviceisnowreadyforconguraon.

WARNING!Applypoweronlyaerthedeviceisproperlywired.

1)Selectthemounnglocaon(onaduct).

2)Usethemounngangeofthedeviceasatemplateandmarkthe

screwholes.

3)Mounttheangeontheductwithscrews(notincluded).(Figure

1a)

4)Adjusttheprobetothedesireddepth.Ensurethattheendofthe

probereachesthemiddleoftheduct.(Figure1b)

5)Tightenthescrewontheangetoholdtheprobeinposion.

Figure 1a - Mounng a ange

Figure 1b - Mounng the probe in a ange

Air ﬂow direcon Air ﬂow direcon

Air ﬂow direcon Air ﬂow direcon Air ﬂow direcon

Strain relief facing down

Figure 1c - Mounng orientaon

Display connecon

OUT 2

24 V

GND

Joysck 1

Joysck 2

Joysck 3

Select

Down

Menu buons OUT 1

mA Out (oponal)

OUT 1

OUT 2

119.0

95.5

119.0

45.0

88.5

188.0

Tighten the

screw

STEP 3: CONFIGURATION

CONFIGURATION CONTINUED

ConguraonoftheRHTDuctseriesdeviceconsistsof:

Conguraonmenuopons.(Displayversionsonly.)

Presstheselectbuontoacceptchanges.Movetothenextset-

ngbypressingthedownbuon.Selecttheexitmenutosavethe

sengs.Ifthebuonsareunusedfor3minutes,thebasicviewwill

reappearautomacallyandthechangedsengsarenotsaved.

1)AcvatethedeviceMenubypushingtheselectbuonfor2

seconds.

ForCEcomplianceaproperlygroundedshieldingcableis

required.

1)Unscrewthestrainreliefandroutethecable(s).

2)Connectthewiresasshowningure2.

3)Tightenthestrainrelief.

OUT 1

OUT 2

24 V

GND

+Power Supply

24VDC / 24VAC

Output 0/2...5/10 V

OUT 1

OUT 2

Output 4...20 mA

Output 4...20 mA Oponal mA output

OUTPUT 1

SELECT

DOWN

5)Selecttheoutput2value.

 (temperature/dewpoint/mixingrao/enthalpy/

absolutehumidity/relavehumidity)

SELECT

DOWN

OUTPUT 2

TEMPERATURE

7)Selecttheoutputrange(0...10V,2...10Vor0...5V)

OUT VOLTAGE

0- 10 V

SELECT

DOWN

10)Pushtheselectbuontoexitmenu.

SELECT

EXIT MENU SELECT

STEP 2: WIRING DIAGRAMS

Figure 2 - Wiring diagram

8)Selecthumidityoset:±10%rH,Osetfeatureenables

eldcalibraon.Thisisnecessaryindemandingapplicaons

requiringannualcalibraon.

9)Selecttemperatureoset:±5°C.

RH OFFSET

0.0 %RH

SELECT

DOWN

TE OFFSET

0.0 °C

SELECT

DOWN

4)Selecttheoutput1value.

 (temperature/dewpoint/mixingrao/enthalpy/

absolutehumidity/relavehumidity)

6.1)Setthelowlimitfortheoutput1(selectedinstep4).

RH OUT MIN

0.0 %RH

SELECT

DOWN

6.2)Setthehighlimitfortheoutput1(selectedinstep4).

SELECT

DOWN

RH OUT MAX

100.0 %RH

2)Selectthevalueshownonthedisplayrow1.

 (temperature/dewpoint/mixingrao/enthalpy/

absolutehumidity/relavehumidity)

DISPLAY ROW1

DEW POINT

SELECT

DOWN

SELECT

DOWN

DISPLAY ROW2

ENTHALPY

3)Selectthevalueshownonthedisplayrow2.

 (temperature/dewpoint/mixingrao/enthalpy/

absolutehumidity/relavehumidity)

6)Setthelimitsfortheoutputs.

 NOTE!Onlyselectedoutputsareshown.

Measurement Default range

Adjustable

low limit

Adjustable

high limit

Smallest range

available

Relavehumidity(RH) 0...100%rH 0...90%rH 10...100%rH 10%rH

Temperature(TE) 0...50°C -30...45°C 5...80°C 5°C

Dewpoint(DP)* -20...80°C -30...70°C -20...80°C 10°C

Mixingrao(MR)* 0...80g/kg -30...70g/kg 20...80g/kg 10g/kg

Enthalpy(ENT)* 0...85kJ/kg 0...85kJ/kg 5...90kJ/kg 5kJ/kg

Absolutehumidity(AH)* 0...80g/m³0...70g/m³10...80g/m³10g/m³

*)calculaonisbasedontemperatureandhumiditymeasurementsandconstant

pressurep=1013mBar

*)totalaccuracyisbasedontheaccuraciesofthemeasuredvalues(TandrH)andthedeviaon

fromtheassumedpressurep=1013mBar

High

limit

Low

limit

5/10 V

20 mA

0/2 V

4 mA

6.3)Setthelowlimitfortheoutput2(selectedinstep5).

TE OUT MIN

0.0 °C

SELECT

DOWN

6.4)Setthehighlimitfortheoutput2(selectedinstep5).

SELECT

DOWN

TE OUT MAX

50.0 °C

WARRANTY POLICY

Thesellerisobligatedtoprovideawarrantyofveyearsforthedeliv-

eredgoodsregardingmaterialandmanufacturing.Thewarrantyperiod

isconsidered tostartonthe deliverydate oftheproduct.Ifa defect

in raw materialsora producon aw isfound, theseller isobligated,

whentheproductissenttothesellerwithoutdelayorbeforeexpira-

onofthewarranty,toamendthemistakeathis/herdiscreoneither

by repairing the defecve product or by delivering free of charge to

thebuyeranewawlessproductandsendingittothebuyer.Delivery

costsfor therepairunderwarranty willbepaidbythebuyerandthe

return costs by the seller. The warranty does not comprise damages

causedbyaccident,lightning,oodorothernaturalphenomenon,nor-

malwearandtear,improperorcarelesshandling,abnormaluse,over-

loading,improperstorage,incorrectcareorreconstrucon,orchanges

andinstallaonworknotdonebytheseller.Theseleconofmaterials

fordevicespronetocorrosionisthebuyer’sresponsibility,unlessother-

wiseislegallyagreedupon.Shouldthemanufactureralterthestructure

ofthedevice, thesellerisnotobligatedtomakecomparablechanges

todevicesalreadypurchased.Appealingforwarrantyrequiresthatthe

buyerhascorrectlyfullledhis/herduesarisenfromthedeliveryand

stated in the contract. The seller will give a new warranty for goods

thathavebeenreplacedorrepairedwithinthewarranty,howeveronly

totheexpiraonoftheoriginalproduct’swarrantyme.Thewarranty

includestherepairofadefecvepartordevice,orifneeded,anewpart

ordevice,butnotinstallaonorexchangecosts.Undernocircumstance

isthesellerliablefordamagescompensaonforindirectdamage.

RECYCLING/DISPOSAL

The parts le over from installaon should be

recycled according to your local instrucons.

Decommissioned devices should be taken to a

recyclingsitethatspecializesinelectronicwaste.

HK Instruments RHT Installation guide

Related papers

Other documents