HK Instruments DPT-R8 Series User manual

Copyright HK Instruments 2021 www.hkinstruments. Installaon version 10.0 2021
INSTALLATION
INSTRUCTIONS
DIFFERENTIAL PRESSURE TRANSMITTERS
DPT-R8 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.
SPECIFICATIONS
ThankyouforchoosinganHKInstrumentsDPTseriesdierenal
pressuretransmier.TheDPTseriesisintendedforuseincommer-
cial environments. It is designed with six unit selecons (Pa, kPa,
mbar,inchWC,mmWC,psi)andeighteldselectablemeasurement
ranges (unidireconal and bi-direconal) to meet your applicaon
requirements. The DPT-R8 series is comprised of the DPT250-R8
with ranges from 25 Pa to 250 Pa, the DPT2500-R8 with ranges
from 100 Pa to 2500 Pa, and the DPT7000-R8 with ranges from
1000Pato7000Pa.
All DPT-R8 series dierenal pressure transmiers are available
withdisplayandautozerocalibraon.
DPT-R8seriesdevicesarecommonlyusedinHVAC/Rsystemsfor:
•fan,blowerandltermonitoring
•pressureandowmonitoring
•valveanddampercontrol
•pressuremonitoringincleanrooms
SPECIFICATIONS
Performance
Accuracy (from applied pressure):
Models250and2500:
Pressure<125Pa=1%+±2Pa
Pressure>125Pa=1%+±1Pa
Model7000:
Pressure<125Pa=1.5%+±2Pa
Pressure>125Pa=1.5%+±1Pa
(including:generalaccuracy,linearity,hysteresis,
longtermstability,andrepeonerror)
Overpressure:
Proofpressure:25kPa
Burstpressure:30kPa
Zero point calibraon:
Automacautozeroormanualpushbuon
Response me:
8.0sor0.8s,selectableviajumper
Technical Specicaons
Media compability:
Dryairornon-aggressivegases
Measuring units:
Pa,kPa,mbar,inchWC,mmWC,psi,selectablevia
jumper
Measuring element:
MEMS,noow-through
Environment:
Operangtemperature:-20...50°C,
-40Cmodel:-40...50°C
Modelswithautozerocalibraon:-5...50°C
Temperaturecompensatedrange0...50°C
Storagetemperature:-40...70°C,
Humidity:0to95%rH,noncondensing
Physical
Dimensions:
Case:90.0x95.0x36.0mm
Weight:
150g
Mounng:
2each4.3mmscrewholes,onesloed
Materials:
Case:ABS
Lid:PC
Ductconnectors:ABS
Tubing:PVC
Protecon standard:
IP54
Display (Oponal)
2-linedisplay(12characters/line)
Line1:acvemeasurement
Line2:units
Electrical connecons:
4-screwterminalblock
Wire:0.2–1.5mm2(12–24AWG)
Cableentry:M16
Pressure ngs:
Maleø5,0mmand6,3mm
+Highpressure
−Lowpressure
Electrical
Voltage:
Circuit:3-wire(VOut,24V,GND)
Input:24VACorVDC,±10%
Output:0–10V/2-10V
Powerconsumpon:<1.0W,
-40Cmodel:<4.0Wwhen<0°C
Resistanceminimum:1kΩ
Current:
Circuit:3-wire(mAOut,24V,GND)
Input:24VACorVDC,±10%
Output:4–20mA
Powerconsumpon:<1.2W,
-40Cmodel:<4.2Wwhen<0°C
Maximumload:500Ω
Minimumload:20Ω
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

Copyright HK Instruments 2021 www.hkinstruments. Installaon version 10.0 2021
SCHEMATICS
DIMENSIONAL DRAWINGS
INSTALLATION
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.
Figure 1a - Mounng orientaon
Figure 1b - Applicaon connecons
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.
Pressure sensor
Zero buon Connecon for
oponal display
Terminal block
LED
Jumpers
Oponal span trimmer
YES NO NO
Stac pressure Filter/Damper
monitoring
Fan/Blower
monitoring
Not
connected
90.0
77.0
71.5
53.0
4.3
95.0
36.0
STEP 2: WIRING DIAGRAMS
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 voltage output
Figure 2b - Wiring diagram current output
V
4–20 mA
24 V
GND
+ Power supply
24 VDC / 24 VAC
0–10 V/2–10 V
A
0–10 V/2–10 V
4–20 mA
24 V
GND
+ Power supply
24 VDC / 24 VAC

Copyright HK Instruments 2021 www.hkinstruments. Installaon version 10.0 2021
STEP 4: SELECTING THE MEASUREMENT UNIT
1)Selectthedesiredmeasurementunit.(seestep4)
2)Selectthedesiredmeasurementrange.(seestep5)
3)Selectthedesiredresponseme.(seestep6)
4)Selectthedesiredvoltageoutput.(seestep7)
5)Zerothedevice.(seestep8)
6)Connectthepressuretubes.Connectposivepressureto
portlabeled“+”andnegavepressuretoport“-”.
7)Closethelid.Thedeviceisnowreadytobeused.
STEP 3: CONFIGURATION
No jumper
Circuit open
Jumper storedJumper installed
Circuit closed
(Grey colour indicates that a jumper is installed)
Figure 3 - Jumper installaon
2)InstalljumpersonJ1,J2andJ3asrequired.
a.Usingtherangenumberfrom1cabove,ndthecorresponding
rangenumberinChart2.
b.InstalljumpersonJ1,J2andJ3ondevice,asshownundertherange
numberinChart2.(Greycolourindicatesthatajumperisinstalled.
Referencegure3forjumperinstallaon.)
1)Tochangethemeasurementunitappearingonthedisplay,installa
jumpertobothpinsofJ5(seeFigure3).
2)Pushdownthezerobuonandthemeasurementunitopons(Pa,
kPa,mbar,inchWC,mmWC,psi)willcycleonthedisplay.
3)Toselectaunitopontodisplay,removethejumperfromJ5
whilethemeasurementunitisvisibleonthedisplay.
Range 1 Range 2 Range 3 Range 4 Range 5 Range 6 Range 7 Range 8
Pa
kPa
mbar
inchWC
0–25
0–0.025
0–0.25
0–0.10
0–50
0–0.05
0–0.50
0–0.20
0–100
0–0.1
0–1.00
0–0.40
0–250
0–0.25
0–2.50
0–1.00
-25–25
-0.025–0.025
-0.25–0.25
-0.10–0.10
-50–50
-0.05–0.05
-0.50–0.50
-0.20–0.20
-100–100
-0.1–0.1
-1.0–1.00
-0.40–0.40
-150–150
-0.15–0.15
-1.50–1.50
-0.60–0.60
Model DPT250-R8
Model DPT2500-R8
Range 1 Range 2 Range 3 Range 4 Range 5 Range 6 Range 7 Range 8
Pa
kPa
mbar
inchWC
-100–100
-0.10–0.10
-1.00–1.00
-0.40–0.40
0–100
0–0.10
0–1.00
0–0.40
0–250
0–0.25
0–2.50
0–1.00
0–500
0–0.50
0–5.00
0–2.01
0–1000
0–1.00
0–10.0
0–4.01
0–1500
0–1.50
0–15.0
0–6.02
0–2000
0–2.00
0–20.0
0–8.03
0–2500
0–2.50
0–25.0
0–10.03
Model DPT7000-R8
Pa
kPa
mbar
inchWC
0–1000
0–1.00
0–10.0
0–4.01
0–1500
0–1.50
0–15.0
0–6.02
0–2000
0–2.0
0–20.0
0–8.03
0–2500
0–2.50
0–25.0
0–10.03
0–3000
0–3.00
0–30.0
0–12.04
0–4000
0–4.00
0–40.0
0–16.05
0–5000
0–5.00
0–50.0
0–20.07
0–7000
0–7.00
0–70.0
0–28.09
Range 1 Range 2 Range 3 Range 4 Range 5 Range 6 Range 7 Range 8
mmWC
psi
mmWC
psi
mmWC
psi
0–2.6
0–0.0036
0–5.1
0–0.0073
0–10.2
0–0.0145
0–25.5
0–0.0363
-2.6–2.6
-0.0036–0.0036
-5.1–5.1
-0.0073–0.0073
-10.2–10.2
-0.0145–0.0145
-15.3–15.3
-0.0218–0.0218
-10.2–10.2
-0.0145–0.0145
0–10.2
0–0.0145
0–25.5
0–0.0363
0–51.0
0–0.0725
0–102.0
0–0.1450
0–153.0
0–0.2176
0–203.9
0–0.2901
0–254.9
0–0.3626
0–102.0
0–0.1450
0–153.0
0–0.2176
0–203.9
0–0.2901
0–254.9
0–0.3626
0–305.9
0–0.4351
0–407.9
0–0.5802
0–509.9
0–0.7252
0–713.8
0–1.0153
SELECTING THE MEASUREMENT RANGE CONTINUED
Chart 1
Range 7 Range 8Range 1 Range 2 Range 3 Range 4 Range 5 Range 6
Jumper J1
Jumper J2
Jumper J3
(Grey colour indicates that a jumper is installed. Reference Figur
e 3 and Schemacs for jumper installaon.)
Chart 2
Theresponsemeaectshowfastthetransmierreactstochangesin
thesystem.Theresponsemeisthemethedevicetakestoreach63
%ofthemeasuredvalue.Tosmoothoutunstablepressureuctuaons
inairowapplicaons,selectalongerresponseme.
Example:
Selectedresponseme:8.0seconds
Result: Output signal achieves a new value in 40 seconds (Response
me*5)
Tochangeresponseme,installorremovejumperonJ4.
(seeFigure3)
1)InstalljumperonJ4for8.0secondresponseme.
2)RemovejumperfromJ4for0.8secondresponseme.
STEP 6: SELECTING THE RESPONSE TIME
STEP 5: SELECTING THE MEASUREMENT RANGE
1)Determinetherangenumber
a.FindthemodelinChart1.
b.Findthemeasurmentunit(selectedinstep4).
c.Findtherequiredmeasurementrangeonthesamelineasthe
measurementunit(babove)anddeterminetherangenumberinthe
header.
STEP 7: Using 2-10 V output
Insomeapplicaonsitiscricaltoknowimmidiatelyifthewireis
brokenorthedeviceisdamaged.Inthesecases,a2-10voltageoutput
isrecommended.
1)InstalljumperonJ6for2-10voltageoutput
2)RemovejumperfromJ6for0-10voltageoutput

Copyright HK Instruments 2021 www.hkinstruments. Installaon version 10.0 2021
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.
NOTE! Always zero the device before use.
Tozerothedevicetwooponsareavailable:
1)ManualPushbuonzeropointcalibraon
2)Autozerocalibraon
Doesmytransmierhaveanautozerocalibraon?Seetheproductla-
bel.Ifitshows-AZinthemodelnumber,thenyouhavetheautozero
calibraon.
1)ManualPushbuonzeropointcalibraon
NOTE:Supplyvoltagemustbeconnectedatleastonehourpriortozero
pointadjustment.
a)Disconnectbothpressuretubesfromthepressureportslabeled+
and–.
b)PushdownthezerobuonunltheLEDlight(red)turnsonandthe
displayreads“zeroing”(displayopononly).(seeFigure4)
c)Thezeroingofthedevicewillproceedautomacallyin4seconds.
Zeroingledlightsonlyforamoment.Zeroiningiscompletewhen
thedisplayreads0(displayopononly).
d)ReinstallthepressuretubesensuringthattheHighpressuretube
isconnectedtotheportlabeled+,andtheLowpressuretubeis
connectedtotheportlabeled−.
STEP 8: ZEROING THE DEVICE
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.
a) Disconnect both pressure tubes from the pressure ports labeled +
and –.
b) Push down the zero buon (joysck) unl the LED light (red)
turns on and the display reads “zeroing” (display opon only). (see
Figure 6)
c) The zeroing of the device will proceed automacally. Zeroing is
complete when the LED turns off, and the display reads 0 (display
opon only).
d) Reinstall the pressure tubes, ensuring the High pressure tube is
connected to the port labeled +, and the Low pressure tube is
connected to the port labeled −.
Press down buon
LED turns ON
Display reads “Zeroing”
LED
Figure 4
2)Autozerocalibraon
Ifthedeviceincludestheoponalautozerocircuit ,noaconisrequired.
Autozerocalibraon(-AZ)isanautozerofunconintheformofanau-
tomaczeroingcircuitbuiltintothePCBboard.Theautozerocalibra-
onelectronicallyadjuststhetransmierzeroatpredeterminedme
intervals(every10minutes).Thefunconeliminatesalloutputsignal
dri due to thermal, electronic or mechanical eects, as well as the
needfortechnicianstoremovehighandlowpressuretubeswhenper-
forming inial or periodic transmier zero point calibraon. The au-
tozero adjustment takes4 seconds aer which the device returns to
its normal measuring mode. During the 4 second adjustment period,
theoutputanddisplayvalueswillfreezetothelatestmeasuredvalue.
Transmiersequippedwiththeautozerocalibraonarevirtuallymain-
tenancefree.
Span point calibration
Oponalspanpointcalibraon(-S)isusedforadjusngtheupperrange
value of the measurement range. The span point calibraon has been
performedbythemanufactureranditisusuallynotnecessarytoadjust
thespansengonsite.Insomecases,spanpointeldcalibraonmay
benecessary,e.g.incaseofannualcalibraonincleanroomapplicaons.
The span point calibraon requires a cered high accuracy pressure
calibratorforreferencepressure.
Toperformaspanpointcalibraon:
1)Connect pressuretubesbetweenthetransmierandthepressure
calibratorconnectors.Connectposivepressuretoport“+”andneg-
avepressuretoport“-”.
2)Setthecalibratorsupplypressuretomatchtheupperrangevalueof
themeasurementrangeusedinthetransmier(e.g.whenused-50…
+50Pameasurementrange,setthecalibratorpressureto+50Pa).
3)Openthelidofthetransmier.
4)Performamanualpushbuonzeropointcalibraon(seestep8).
5)Adjusttheupperrangevaluebyturningthetrimmer(seeschemacs)
withascrewdriverunlthevalueshownonthetransmierdisplay
correspondstothesetupvalueofthecalibrator.
Thelidofthedevicehastobeclosedwhentheoperaontemperature
isbelow0°C.Thedisplayneeds15minutestowarmupifthedeviceis
startedintemperaturebelow0°C.
NOTE!Thepowerconsumponrisesandtherecanbeanaddionalerror
of0,015Vor0,024mAwhentheoperaontemperatureisbelow0°C.
-40C MODEL: OPERATION IN COLD ENVIRONMENT