HK Instruments DPT-CR-MOD Series User manual

Copyright HK Instruments 2022 www.hkinstruments. Installaon version 1.0 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
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DPT-CR-MODseriesdif-
ferenalpressuretransmier.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,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
Protecon 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:0−10VorNTC10k,Pt1000,
Ni1000/(-LG)
RHinput:0−10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 1.0 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 1.0 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 1.0 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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 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...2500 -250.0...2500.0Pa
3x0015 PressurereadingkPa 16bit -2500...2500 -0.2500...2.5000kPa
3x0016 Pressurereadingmbar 16bit -2500...2500 -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.