HK Instruments DPT-CR-MOD Series User manual
- Type
- User manual
HK Instruments DPT-CR-MOD Series is a versatile device that can be used for measuring differential pressure in cleanrooms. It also has the ability to monitor temperature and relative humidity, making it an ideal choice for various applications in HVAC/R systems. The DPT-CR-MOD Series features Modbus serial communication protocol, allowing for easy integration into existing systems. With its high accuracy and wide measurement range, this device provides reliable and precise data for critical monitoring applications.
HK Instruments DPT-CR-MOD Series is a versatile device that can be used for measuring differential pressure in cleanrooms. It also has the ability to monitor temperature and relative humidity, making it an ideal choice for various applications in HVAC/R systems. The DPT-CR-MOD Series features Modbus serial communication protocol, allowing for easy integration into existing systems. With its high accuracy and wide measurement range, this device provides reliable and precise data for critical monitoring applications.
Copyright HK Instruments 2022 www.hkinstruments. Installaon 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.
• Failuretoobservesafetyinformaonandcomplywith
instruconscanresultinPERSONALINJURY,DEATHAND/OR
PROPERTY DAMAGE.
• Toavoidelectricalshockordamagetoequipment,disconnect
powerbeforeinstallingorservicinganduseonlywiringwith
insulaonratedforfulldeviceoperangvoltage.
• Toavoidpotenalreand/orexplosiondonotuseinpotenally
ammableorexplosiveatmospheres.
• Retaintheseinstruconsforfuturereference.
• Thisproduct,wheninstalled,willbepartofanengineered
systemwhosespecicaonsandperformancecharacteriscs
arenotdesignedorcontrolledbyHKInstruments.Review
applicaonsandnaonalandlocalcodestoassurethatthe
installaonwillbefunconalandsafe.Useonlyexperiencedand
knowledgeabletechnicianstoinstallthisdevice.
ThankyouforchoosinganHKInstrumentsDPT-CR-MODseriesdif-
ferenalpressuretransmier.DPT-CR-MODseriesisdesignedspe-
ciallyforcleanroommonitoring.Inaddiontodierenalpressure,
thedeviceenablesmonitoringtemperatureandrelavehumidity.
A 0…10 V voltage input of an external humidity and temperature
transmiercanbeconnectedtotheinputterminalofthedevice.In
thiscase,all three measuredvalues(dierenalpressure,relave
humidity,temperature)willbeshownsimultaneouslyonthedisplay.
Alternavely,apassivetemperaturesensorcanbeconnectedtothe
inputterminal.
DPT-CR-MOD is compable with Modbus serial communicaon
protocol.
DPT-CR-MODseriesdevicesarecommonlyusedinHVAC/R
systems for:
•pressure,temperatureandhumiditymonitoringincleanrooms
SPECIFICATIONS
Performance
Measurement range:
-250...2500Pa
Accuracy (from applied pressure):
Pressure<125Pa=1%+±2Pa
Pressure>125Pa=1%+±1Pa
(Including:generalaccuracy,linearity,
hysteresis,longtermstabilityandrepeonerror)
Input accuracy:
Temperature:±0.25°Ctypical@25°C+accuracyof
externaltransmier
Humidity:±0.5%rHtypical@25°C+accuracyof
externaltransmier
Overpressure:
Proofpressure:25kPa
Burstpressure:30kPa
Zero point calibraon:
ManualpushbuonorviaModbus
Response me:
1...20sselectableviamenu
Communicaon
Protocol:MODBUSoverSerialLine
TransmissionMode:RTU
Interface:RS485
Byteformat(11bits)inRTUmode:
CodingSystem:8-bitbinary
BitsperByte:
1 start bit
8databits,leastsignicantbitsent
rst
1bitforparity
1stopbit
Baudrate:selectableinconguraon
Modbusaddress:1−247addressesselectablein
conguraonmenu
Technical Specicaons
Media compability:
Dryairornon-aggressivegases
Measuring units:
Selectableviamenu
(Pa,kPa,mbar,inchWC,mmWC,psi)
Measuring element:
MEMS,noow-through
Environment:
Operangtemperature:-20...50°C
Temperaturecompensatedrange0...50°C
Storagetemperature:-40...70°C
Humidity:0to95%rH,non-condensing
Physical
Dimensions:
Case:102x71.5x36mm
Weight:
150g
Mounng:
2each4.3mmscrewholes,onesloed
Materials:
Case: ABS
Lid:PC
Pressure inlets: Brass
Protecon standard:
IP54
Display:
2-linedisplay(12characters/line)
Line1:pressuremeasurement
Line2:relavehumidityandtemperature(ifexternal
measurementsareconnected)
Electrical Connecons:
4+4springloadterminals,max1.5mm2
Cableentry:M20
Pressure ngs:
Maleø5.2mm
+Highpressure
-Lowpressure
Electrical
Supply voltage:
24VACorVDC±10%
Power consumpon:
<1.3W
Output signal:
viaModbus
Input signals:
Temperatureinput:0−10VorNTC10k,Pt1000,
Ni1000/(-LG)
RHinput:0−10V
Conformance
Meetsrequirementsfor:
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. Installaon version 2.0 2022
SCHEMATICS
DIMENSIONAL DRAWINGS
INSTALLATION
Figure 1a - Surface mounng
STEP 1: MOUNTING THE DEVICE
1)Mountthedeviceinthedesiredlocaon(seestep1).
2)Openthelidandroutethecablethroughthestrainreliefand
connectthewirestotheterminalblock(s)(seestep2).
3)Thedeviceisnowreadyforconguraon.
WARNING!Applypoweronlyaerthedeviceisproperlywired.
1)Selectthemounnglocaon(duct,wall,panel).
2)Usethedeviceasatemplateandmarkthescrewholes.
3)Mountwithappropriatescrews.
Figure 1b - Mounng orientaon
Figure 1c - Applicaon connecons
DPT
4.3
DPT
Display connecon
A
24 V
GND
LEDs
Joysck 1
Joysck 2
Joysck 3
Select
Up
Down
Menu buons
Terminal
blocks
Pressure
sensor
Input terminal
configuraon
jumpers
Input 1
Input 2
GND
GND
InputOutput
B
YES NO NO
Stac pressure Filter/Damper
monitoring
Fan/Blower
monitoring
Not
connected
Copyright HK Instruments 2022 www.hkinstruments. Installaon version 2.0 2022
STEP 2: WIRING DIAGRAMS CONFIGURATION CONTINUED
ForCEcompliance,aproperlygroundedshieldingcableisrequired.
1)Unscrewthestrainreliefandroutethecable(s).
2)Connectthewiresasshowningure2aand2b.
3)Tightenthestrainrelief.
Figure 2a - Wiring diagram
Figure 2b - Wiring diagram example for input signals
NOTE! Always zero the device before use.
Supplyvoltagemustbeconnected one hourbeforethe zeropoint
adjustmentiscarriedout.AccessviaModbusorbypushbuon.
1)Loosebothtubesfromthepressureinlets+and-.
2)Presstheselectbuonbriey.
3)WaitunltheLEDturnsoandtheninstalltubesagainforthe
pressureinlets.
STEP 3: CONFIGURATION
Input 1
Input 2
GND
GND
Pt1000
J1
J2
J3
IN1 IN2
Input 1: Pt1000 temperature sensor
Funcon 04 - Read input register 3x0005
Input 2: Relave humidity 0...10 V
Funcon 04 - Read input register 3x0026
Example 1:
Temperature sensor and rH-transmier connected to DPT-CR-MOD
rH-transmier rH 0...10 V
Jumper sengs
Input 1
Input 2
GND
GND
J1
J2
J3
IN1 IN2
Input 1: Temperature 0...10 V
Funcon 04 - Read input register 3x0020
Input 2: Relave humidity 0...10 V
Funcon 04 - Read input register 3x0026
Example 2:
rH/Temp-transmier connected to DPT-CR-MOD
rH/Temp-
transmier
rH 0...10 V
Jumper sengs
Temp 0...10 V
1)AcvatethedeviceMenubypushingthetheselectbuonfor2
seconds.
2)SelecttheaddressforModbus:1...247
BAUD RATE
9600
SELECT
UP
DOWN
ADDRESS
99
SELECT
UP
DOWN
PARITY BIT
NONE
SELECT
UP
DOWN
3)Selectthebaudrate:9600/19200/38400.
4)Selecttheparitybit:None/Even/Odd
9)Pushtheselectbuontoexitmenu.
SELECT
EXIT MENU SELECT
STEP 4: ZERO POINT ADJUSTMENT
SELECT
STEP 5: INPUT SIGNAL CONFIGURATION
InputsignalscanbereadoverModbusviaDPTMODRS485interface.
Signals Accuracy for measurement Resoluon
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%
Thejumpersshouldbesetaccordingtotheinstruconsbelowandthe
valueshouldbereadfromtherightregister.Bothinputscanbecong-
uredindependently.
Figure 3 - Input signal conguraon
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)Selecttheresponseme:1...20s
RESPONSETIME
4 s
SELECT
UP
DOWN
5)Selectthepressureunitfordisplay:
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)Selectthetemperatureunitfordisplay:Celsius/Fahrenheit
7)Selectthetemperaturemeasurementtype:
0...10V/NTC10K/NI1000LG/NI1000/PT1000
Copyright HK Instruments 2022 www.hkinstruments. Installaon version 2.0 2022
Thesellerisobligatedtoprovideawarrantyofveyearsforthedeliv-
eredgoodsregardingmaterialandmanufacturing.Thewarrantyperiod
isconsideredtostartonthedeliverydateoftheproduct.Ifadefect
inrawmaterialsoraproduconawisfound,thesellerisobligated,
whentheproductissenttothesellerwithoutdelayorbeforeexpira-
onofthewarranty,toamendthemistakeathis/herdiscreoneither
by repairing the defecve product or by delivering free of charge to
thebuyeranewawlessproductandsendingittothebuyer.Delivery
costsfortherepairunderwarrantywillbepaidbythebuyerandthe
return costs by the seller. The warranty does not comprise damages
causedbyaccident,lightning,oodorothernaturalphenomenon,nor-
malwearandtear,improperorcarelesshandling,abnormaluse,over-
loading,improperstorage,incorrectcareorreconstrucon,orchanges
and installaonwork notdoneby the seller.Theseleconof materi-
alsfordevicespronetocorrosionisthebuyer’sresponsibility,unless
otherwise is legally agreed upon. Should the manufacturer alter the
structureofthedevice,thesellerisnotobligatedtomakecomparable
changestodevicesalreadypurchased.Appealingforwarrantyrequires
thatthebuyerhascorrectlyfullledhis/herduesarisenfromthede-
liveryandstatedinthecontract.Thesellerwillgiveanewwarrantyfor
goodsthathavebeenreplacedorrepairedwithinthewarranty,how-
everonlytotheexpiraonoftheoriginalproduct’swarrantyme.The
warrantyincludestherepairofadefecvepartordevice,orifneeded,
anewpartordevice,butnotinstallaonorexchangecosts.Underno
circumstanceisthesellerliablefordamagescompensaonforindirect
damage.
Register Parameter descripon Data Type Value Range
3x0001 Programversion 16bit 0...1000 0.00...99.00
3x0002...0004 Not in use
3x0005 TemperatureCelsius:Pt1000 16bit -500...500 -50.0...+50.0°C
3x0006 TemperatureCelsius:Ni1000 16bit -500...500 -50.0...+50.0°C
3x0007 TemperatureCelsius:Ni1000-LG 16bit -500...500 -50.0...+50.0°C
3x0008 TemperatureCelsius:NTC10k 16bit -500...500 -50.0...+50.0°C
3x0009...0013 Not in use
3x0 014 PressurereadingPa 16bit -2500...25000 -250.0...2500.0Pa
3x0015 PressurereadingkPa 16bit -2500...25000 -0.2500...2.5000kPa
3x0016 Pressurereadingmbar 16bit -2500...25000 -2.500...25.000mbar
3x0017 PressurereadinginWC 16bit -1003...10030 -1.003...10.030inWC
3x0018 PressurereadingmmWC 16bit -2549...25490 -25.49...254.90mmWC
3x0 019 Pressurereadingpsi 16bit -362...3625 -0.0362...0.3625psi
3x0020 Temperature0...10Vat0...50°C 16bit 0...500 0.0...50.0°C
3x0021 TemperatureFahrenheit:
0...10Vat0...50°C 16bit 32...1220 32.0...122.0°F
3x0022 TemperatureFahrenheit:Pt1000 16bit -580...1220 -58.0...122.0°F
3x0023 TemperatureFahrenheit:Ni1000 16bit -580...1220 -58.0...122.0°F
3x0024 TemperatureFahrenheit:Ni1000-LG 16bit -580...1220 -58.0...122.0°F
3x0025 TemperatureFahrenheit:NTC10k 16bit -580...1220 -58.0...122.0°F
3x0026 Relavehumidity0...10Vat0...100% 16bit 0...1000 0.0...100.0%rH
Funcon04-Readinputregister
Funcon05-Writesinglecoil
Register Parameter descripon Data Type Value Range
0x0001 Zeroingfuncon Bit 0 0...1 On-O
STEP 6: MODBUS REGISTERS
WARRANTY POLICY
RECYCLING/DISPOSAL
The parts le over from installaon should be
recycled according to your local instrucons.
Decommissioned devices should be taken to a
recyclingsitethatspecializesinelectronicwaste.
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HK Instruments DPT-CR-MOD Series User manual
- Type
- User manual
HK Instruments DPT-CR-MOD Series is a versatile device that can be used for measuring differential pressure in cleanrooms. It also has the ability to monitor temperature and relative humidity, making it an ideal choice for various applications in HVAC/R systems. The DPT-CR-MOD Series features Modbus serial communication protocol, allowing for easy integration into existing systems. With its high accuracy and wide measurement range, this device provides reliable and precise data for critical monitoring applications.
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