HK Instruments DPT-CR-MOD Installation guide

Type
Installation guide

HK Instruments DPT-CR-MOD is a differential pressure transmitter designed for cleanroom monitoring. It enables monitoring of differential pressure, temperature, and relative humidity. The device is compatible with Modbus serial communication protocol and can be used in HVAC/R systems for pressure, temperature, and humidity monitoring in cleanrooms. It features a 2-line display that shows pressure measurement on line 1 and relative humidity and temperature on line 2. The device has a measuring range of -250...

HK Instruments DPT-CR-MOD is a differential pressure transmitter designed for cleanroom monitoring. It enables monitoring of differential pressure, temperature, and relative humidity. The device is compatible with Modbus serial communication protocol and can be used in HVAC/R systems for pressure, temperature, and humidity monitoring in cleanrooms. It features a 2-line display that shows pressure measurement on line 1 and relative humidity and temperature on line 2. The device has a measuring range of -250...

Copyright HK Instruments 2022 www.hkinstruments. Installaon version 2.0 2022
INSTALLATION
INSTRUCTIONS
DIFFERENTIAL PRESSURE TRANSMITTERS
DPT-CR-MOD Series
READ THESE INSTRUCTIONS CAREFULLY BEFORE
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS
DEVICE.
• Failuretoobservesafetyinformaonandcomplywith
instrucons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DPT-CR-MODseriesdif-
ferenalpressuretransmier.DPT-CR-MODseriesisdesignedspe-
ciallyforcleanroommonitoring.Inaddiontodierenalpressure,
thedeviceenablesmonitoringtemperatureandrelavehumidity.
A 0…10 V voltage input of an external humidity and temperature
transmiercanbeconnectedtotheinputterminalofthedevice.In
thiscase,all three measuredvalues(dierenalpressure,relave
humidity,temperature)willbeshownsimultaneouslyonthedisplay.
Alternavely,apassivetemperaturesensorcanbeconnectedtothe
inputterminal.
DPT-CR-MOD is compable with Modbus serial communicaon
protocol.
DPT-CR-MODseriesdevicesarecommonlyusedinHVAC/R
systems for:
•pressure,temperatureandhumiditymonitoringincleanrooms
SPECIFICATIONS
Performance
Measurement range:
-250...2500Pa
Accuracy (from applied pressure):
Pressure<125Pa=1%+±2Pa
Pressure>125Pa=1%+±1Pa
(Including:generalaccuracy,linearity,
hysteresis,longtermstabilityandrepeonerror)
Input accuracy:
Temperature:±0.25°Ctypical@25°C+accuracyof
externaltransmier
Humidity:±0.5%rHtypical@25°C+accuracyof
externaltransmier
Overpressure:
Proofpressure:25kPa
Burstpressure:30kPa
Zero point calibraon:
ManualpushbuonorviaModbus
Response me:
1...20sselectableviamenu
Communicaon
Protocol:MODBUSoverSerialLine
TransmissionMode:RTU
Interface:RS485
Byteformat(11bits)inRTUmode:
 CodingSystem:8-bitbinary
 BitsperByte:
1 start bit
 8databits,leastsignicantbitsent
 rst
 1bitforparity
 1stopbit
Baudrate:selectableinconguraon
Modbusaddress:1−247addressesselectablein
conguraonmenu
Technical Specicaons
Media compability:
Dryairornon-aggressivegases
Measuring units:
Selectableviamenu
(Pa,kPa,mbar,inchWC,mmWC,psi)
Measuring element:
MEMS,noow-through
Environment:
Operangtemperature:-20...50°C
Temperaturecompensatedrange0...50°C
Storagetemperature:-40...70°C
Humidity:0to95%rH,non-condensing
Physical
Dimensions:
Case:102x71.5x36mm
Weight:
150g
Mounng:
2each4.3mmscrewholes,onesloed
Materials:
Case: ABS
Lid:PC
Pressure inlets: Brass
Protecon standard:
IP54
Display:
2-linedisplay(12characters/line)
Line1:pressuremeasurement
Line2:relavehumidityandtemperature(ifexternal
measurementsareconnected)
Electrical Connecons:
4+4springloadterminals,max1.5mm2
Cableentry:M20
Pressure ngs:
Maleø5.2mm
+Highpressure
-Lowpressure
Electrical
Supply voltage:
24VACorVDC±10%
Power consumpon:
<1.3W
Output signal:
viaModbus
Input signals:
Temperatureinput:010VorNTC10k,Pt1000,
Ni1000/(-LG)
RHinput:010V
Conformance
Meets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
Copyright HK Instruments 2022 www.hkinstruments. Installaon version 2.0 2022
SCHEMATICS
DIMENSIONAL DRAWINGS
INSTALLATION
Figure 1a - Surface mounng
STEP 1: MOUNTING THE DEVICE
1)Mountthedeviceinthedesiredlocaon(seestep1).
2)Openthelidandroutethecablethroughthestrainreliefand
connectthewirestotheterminalblock(s)(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(duct,wall,panel).
2)Usethedeviceasatemplateandmarkthescrewholes.
3)Mountwithappropriatescrews.
Figure 1b - Mounng orientaon
Figure 1c - Applicaon connecons
DPT
4.3
DPT
Display connecon
A
24 V
GND
LEDs
Joysck 1
Joysck 2
Joysck 3
Select
Up
Down
Menu buons
Terminal
blocks
Pressure
sensor
Input terminal
configuraon
jumpers
Input 1
Input 2
GND
GND
InputOutput
B
YES NO NO
Stac pressure Filter/Damper
monitoring
Fan/Blower
monitoring
Not
connected
Copyright HK Instruments 2022 www.hkinstruments. Installaon version 2.0 2022
STEP 2: WIRING DIAGRAMS CONFIGURATION CONTINUED
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2aand2b.
3)Tightenthestrainrelief.
Figure 2a - Wiring diagram
Figure 2b - Wiring diagram example for input signals
NOTE! Always zero the device before use.
Supplyvoltagemustbeconnected one hourbeforethe zeropoint
adjustmentiscarriedout.AccessviaModbusorbypushbuon.
1)Loosebothtubesfromthepressureinlets+and-.
2)Presstheselectbuonbriey.
3)WaitunltheLEDturnsoandtheninstalltubesagainforthe
pressureinlets.
STEP 3: CONFIGURATION
Input 1
Input 2
GND
GND
Pt1000
J1
J2
J3
IN1 IN2
Input 1: Pt1000 temperature sensor
Funcon 04 - Read input register 3x0005
Input 2: Relave humidity 0...10 V
Funcon 04 - Read input register 3x0026
Example 1:
Temperature sensor and rH-transmier connected to DPT-CR-MOD
rH-transmier rH 0...10 V
Jumper sengs
Input 1
Input 2
GND
GND
J1
J2
J3
IN1 IN2
Input 1: Temperature 0...10 V
Funcon 04 - Read input register 3x0020
Input 2: Relave humidity 0...10 V
Funcon 04 - Read input register 3x0026
Example 2:
rH/Temp-transmier connected to DPT-CR-MOD
rH/Temp-
transmier
rH 0...10 V
Jumper sengs
Temp 0...10 V
1)AcvatethedeviceMenubypushingthetheselectbuonfor2
seconds.
2)SelecttheaddressforModbus:1...247
BAUD RATE
9600
SELECT
UP
DOWN
ADDRESS
99
SELECT
UP
DOWN
PARITY BIT
NONE
SELECT
UP
DOWN
3)Selectthebaudrate:9600/19200/38400.
4)Selecttheparitybit:None/Even/Odd
9)Pushtheselectbuontoexitmenu.
SELECT
EXIT MENU SELECT
STEP 4: ZERO POINT ADJUSTMENT
SELECT
STEP 5: INPUT SIGNAL CONFIGURATION
InputsignalscanbereadoverModbusviaDPTMODRS485interface.
Signals Accuracy for measurement Resoluon
0...10 V <0.5%typical 0.1%
NTC10k <0.5%typical 0.1%
Pt1000 <0.5%typical 0.1%
Ni1000/(-LG) <0.5%typical 0.1%
Thejumpersshouldbesetaccordingtotheinstruconsbelowandthe
valueshouldbereadfromtherightregister.Bothinputscanbecong-
uredindependently.
Figure 3 - Input signal conguraon
J1
J2
J3
IN1 IN2
J1
J1
J1
J2
J2
J2
J3
J3
J3
NTC10k
Pt1000 / Ni1000(-LG)
0...10 V
A
B
24 V
GND
+ Power Supply
24VDC / 24VAC
Input 1
Input 2
GND
GND
Modbus Temp
rH
6)Selecttheresponseme:1...20s
RESPONSETIME
4 s
SELECT
UP
DOWN
5)Selectthepressureunitfordisplay:
 Pa/kPa/mbar/mmWC/inchWC/psi
PRESS. UNIT
Pa
SELECT
UP
DOWN
TEMPERATURE
0...10V
SELECT
UP
DOWN
TEMP. UNIT
CELSIUS
SELECT
UP
DOWN
8)Selectthetemperatureunitfordisplay:Celsius/Fahrenheit
7)Selectthetemperaturemeasurementtype:
0...10V/NTC10K/NI1000LG/NI1000/PT1000
Copyright HK Instruments 2022 www.hkinstruments. Installaon version 2.0 2022
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producon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 materi-
alsfordevicespronetocorrosionisthebuyer’sresponsibility,unless
otherwise 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de-
liveryandstatedinthecontract.Thesellerwillgiveanewwarrantyfor
goodsthathavebeenreplacedorrepairedwithinthewarranty,how-
ever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.
Register Parameter descripon Data Type Value Range
3x0001 Programversion 16bit 0...1000 0.00...99.00
3x0002...0004 Not in use
3x0005 TemperatureCelsius:Pt1000 16bit -500...500 -50.0...+50.0°C
3x0006 TemperatureCelsius:Ni1000 16bit -500...500 -50.0...+50.0°C
3x0007 TemperatureCelsius:Ni1000-LG 16bit -500...500 -50.0...+50.0°C
3x0008 TemperatureCelsius:NTC10k 16bit -500...500 -50.0...+50.0°C
3x0009...0013 Not in use
3x0 014 PressurereadingPa 16bit -2500...25000 -250.0...2500.0Pa
3x0015 PressurereadingkPa 16bit -2500...25000 -0.2500...2.5000kPa
3x0016 Pressurereadingmbar 16bit -2500...25000 -2.500...25.000mbar
3x0017 PressurereadinginWC 16bit -1003...10030 -1.003...10.030inWC
3x0018 PressurereadingmmWC 16bit -2549...25490 -25.49...254.90mmWC
3x0 019 Pressurereadingpsi 16bit -362...3625 -0.0362...0.3625psi
3x0020 Temperature0...10Vat0...50°C 16bit 0...500 0.0...50.0°C
3x0021 TemperatureFahrenheit:
0...10Vat0...50°C 16bit 32...1220 32.0...122.0°F
3x0022 TemperatureFahrenheit:Pt1000 16bit -580...1220 -58.0...122.0°F
3x0023 TemperatureFahrenheit:Ni1000 16bit -580...1220 -58.0...122.0°F
3x0024 TemperatureFahrenheit:Ni1000-LG 16bit -580...1220 -58.0...122.0°F
3x0025 TemperatureFahrenheit:NTC10k 16bit -580...1220 -58.0...122.0°F
3x0026 Relavehumidity0...10Vat0...100% 16bit 0...1000 0.0...100.0%rH
Funcon04-Readinputregister
Funcon05-Writesinglecoil
Register Parameter descripon Data Type Value Range
0x0001 Zeroingfuncon Bit 0 0...1 On-O
STEP 6: MODBUS REGISTERS
WARRANTY POLICY
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.
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HK Instruments DPT-CR-MOD Installation guide

Type
Installation guide

HK Instruments DPT-CR-MOD is a differential pressure transmitter designed for cleanroom monitoring. It enables monitoring of differential pressure, temperature, and relative humidity. The device is compatible with Modbus serial communication protocol and can be used in HVAC/R systems for pressure, temperature, and humidity monitoring in cleanrooms. It features a 2-line display that shows pressure measurement on line 1 and relative humidity and temperature on line 2. The device has a measuring range of -250...

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