Copyright HK Instruments 2022 www.hkinstruments. Installaon version 9.0 2022
INSTALLATION
INSTRUCTIONS
AIR FLOW AND VELOCITY TRANSMITTERS
DPT-Flow 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-Flowseriesairow
transmier.TheDPT-Flowseriesisintendedforuseincommercial
environments.TheDPT-Flowmeasuresairow,velocityanddier-
enalpressure.Itisdesignedtobeusedincombinaonwithairow
measuring probes (i.e. FloXact), dampers or with centrifugal fans
thatprovidedierenalpressureconneconsandK-values.
TheDPT-FlowseriesofairowtransmiersiscomprisedofDPT-
Flow-1000, DPT-Flow-2000, DPT-Flow-5000 and DPT-Flow-7000
withmeasurementrangesof0–1000Pa,0–2000Pa,0–5000Paand
0–7000Parespecvely.Allmodelscomewithdisplayandmanual
pushbuon zeropoint calibraon. Oponal autozero calibraonis
also available.
DPT-FlowseriesdevicesarecommonlyusedinHVAC/Rsystemsfor:
•airowmonitoringacrosscentrifugalfansandblowers
•in-ductairowmonitoring
•VAVapplicaons
SPECIFICATIONS
Performance
Accuracy (from applied pressure):
Models1000and2000:
Pressure<125Pa=1%+±2Pa
Pressure>125Pa=1%+±1Pa
Models5000and7000:
Pressure<125Pa=1.5%+±2Pa
Pressure>125Pa=1.5%+±1Pa
(Accuracyspecicaonsinclude:generalaccuracy,
linearity,hysteresis,longterm
stability,andrepeonerror)
Overpressure:
Proofpressure:25kPa
Burstpressure:30kPa
Zero point calibraon:
Automacautozeroor
manualpushbuon
Response me:
1.0−20s,selectableviamenu
Technical Specicaons
Media compability:
Dryairornon-aggressivegases
Pressure units (select via menu):
Pa,kPa,mbar,inWC,mmWC,psi
Pressure output scale (select via menu):
Measuring element:
MEMS,noow-through
Environment:
Operangtemperature:-20...50°C,
-40Cmodel:-40...50°C
Modelswithautozerocalibraon:-5...50°C
Temperaturecompensatedrange0…50°C
Storagetemperature:-40...70°C,
Humidity:0to95%rH,noncondensing
Physical
Dimensions:
Case:90.0x95.0x36.0mm
Weight:
150g
Mounng:
2each4.3mmscrewholes,onesloed
Materials:
Case:ABS
Lid:PC
Protecon standard:
IP54
Display
2-linedisplay(12characters/line)
Line1:Volumeorvelocitymeasurement
Line2:Pressuremeasurement
Size:46.0x14.5mm
Electrical connecons:
4-screwterminalblock
Wire:0.2–1.5mm2(16–24AWG)
Cable entry:
Strainrelief:M16
Knockout:16mm
Pressure ngs
Maleø5.0mmand6.3mm
Electrical
Voltage:
Circuit:3-wire(VOut,24V,GND)
Input:24VACorVDC,±10%
Output:0–10V/2-10V,selectableviajumper
Powerconsumpon:<1.0W
-40Cmodel:<4.0Wwhen<0°C
Resistanceminimum:1kΩ
Current:
Circuit:3-wire(mAOut,24V,GND)
Input:24VACorVDC,±10%
Output:4–20mA,selectableviajumper
Powerconsumpon:<1.2W
-40Cmodel:<4.2Wwhen<0°C
Maximumload:500Ω
Minimumload:20Ω
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
DPT-Flow-1000
DPT-Flow-
2000 DPT-Flow-5000 DPT-Flow-7000
Pa 100-1,000 200-2,000 500-5,000 700-7,000
kPa 0.1-1.0 0.2-2.0 0.5-5.0 0.7-7.0
mbar 1-10 2.0-20 5.0-50 7. 0-70
mmWC 10-100 20-200 50-500 70-700
inWC 0.4-4.0 0.8-8.0 2.0-20 2.5-30
Flow output scale (select via menu):
Units Range
m3/s 0.025-50
m3/hr 100-200,000
cfm 50-100,000
l/s 25-50,000
m/s 1-100
f/min 200-20,000
APPLICATIONS
INTRODUCTION WARNING
RoHS
COMPLIANT
Flow units (select via menu):
Volume:m3/s,m3/hr,cfm,l/s,none
Velocity:m/s,/min
Copyright HK Instruments 2022 www.hkinstruments. Installaon version 9.0 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
Connecon for display
Terminal block
Pressure
sensor
Menu buons
LED
SELECT
UP
DOWN
ZERO
V OUT
P OUT
24 V
GND
FLOW
PRESSURE
Current
Out
Voltage
90.0
77.0
71.5
53.0
4.3
95.0
36.0
Thepressuretubesareconnectedtoaowmeasurementprobe(i.e.FloXact),ortothe
measurementportsspeciedbythefanmanufacturer.PleaseseetheFloXactinstallaon
guideorthefanmanufacturer’stechnicalspecicaonsformoreinformaon.
YES NO NO
Copyright HK Instruments 2022 www.hkinstruments. Installaon version 9.0 2022
STEP 2: WIRING DIAGRAMS CONFIGURATION CONTINUED
ForCEcompliance,aproperlygroundedshieldingcableisrequired.
1)Unscrewthestrainreliefandroutethecable.
2)Connectthewiresasshowningure2aand2b.
3)Tightenthestrainrelief.
Figure 2a - Wiring diagram: Volume ow output
Figure 2b - Wiring diagram: Pressure output
STEP 3: CONFIGURATION
3)If
Commonprobe
selected:selectmeasurementunitsusedinthe
formula(akaFormulaunit)(i.e.l/s)
b. If
Commonprobe
selectedinstep1:
Each common probe has a specic K-value. Select the K-value from
commonprobemanufacturer’sspecicaons.
AvailableK-valuerange:0.001...9999.000
7)Selectowunitfordisplayandoutput:
Flowvolume:m3/s,m3/h,cfm,l/s,none
Velocity:m/s,f/min
V OUT
P OUT
24 V
GND
+ Power supply
24 VDC / 24 VAC
0–10 V / 2-10 V / 4–20 mA
V OUT
P OUT
24 V
GND
+ Power supply
24 VDC / 24 VAC
0–10 V / 2-10 V / 4–20 mA
1)AcvatethedeviceMenubypushingtheselectbuonfor2
seconds
2)Selectthefunconingmodeoftheowmeter:
-SelectManufacturerwhenconnecngDPT-Flowtoafanwith
pressuremeasurementpoints
-SelectCommon probewhenusingDPT-Flowwithacommon
measurementprobethatfollowstheformula:
q=k∙√∆P(i.e.FloXact)
MANUFACTURER
Common probe
SELECT
UP
DOWN
Common probe Flakt Woods
SELECT
UP
DOWN
FORMULA UNIT
l/s
SELECT
UP
DOWN
4)SelectK-value
a.Ifmanufacturerselectedinstep2:
EachfanhasaspecicK-value.SelecttheK-valuefromfanmanufac-
turer’sspecicaons.
Manufacturer: K-value:
Fläktwoods k=0.3...99
Rosenberg k=37...800
Nicotra-Gebhardt k=50...4700
Comefri k=10...2000
Ziehl k=10...1500
ebm-papst k=10...1500
Gebhardt k=50...4700
Nicotra k=50...5300
K-VALUE
9000.000
SELECT
UP
DOWN
5)Selectpressureunitfordisplayandoutput:Pa,kPa,mbar,inWCor
mmWC
PRESS.UNIT
Pa
SELECT
UP
DOWN
6)Pressureoutputscale(pOUT).Selectpressureoutputscaleto
improveoutputresoluon.
DPT-Flow-1000 DPT-Flow-2000 DPT-Flow-5000 DPT-Flow-7000
100–1000Pa
0.1–1.0kPa
1.0–10mbar
10–100mmWC
0.4–4.0inWC
200–2000Pa
0.2–2.0kPa
2.0–20mbar
20–200mmWC
0.8–8.0inWC
500–5000Pa
0.5–5.0kPa
5.0–50mbar
50–500mmWC
2.0–20inWC
700–7000Pa
0.7–7.0kPa
7.0–70mbar
70-700mmWC
2.5–30inWC
P OUTPUT MAX
2000 Pa
SELECT
UP
DOWN
FLOW UNIT
m3/s
SELECT
UP
DOWN
Jumper installed to the two upper pins on the le side:
Current output selected for flow
Flow
Pressure
Jumper installed to the two lower pins on the le side:
Voltage output selected for flow
Jumper installed to the two upper pins on the right side:
Current output selected for pressure
Jumper installed to the two lower pins on the right side:
Voltage output selected for pressure
Figure 2c - Output mode selecon
Copyright HK Instruments 2022 www.hkinstruments. Installaon version 9.0 2022
NOTE! Always zero the device before use.
Tozerothedevicetwooponsareavailable:
1)ManualPushbuonzeropointcalibraon
2)Autozerocalibraon
Doesmytransmierhaveanautozerocalibraon?Seetheproductlabel.If
itshows-AZinthemodelnumber,thenyouhavetheautozerocalibraon.
1)ManualPushbuonzeropointcalibraon
NOTE:Supplyvoltagemustbeconnectedatleastonehourpriortozero
pointadjustment.
a)Disconnectbothpressuretubesfromthepressureportslabeled+and–.
b)PushdownthezerobuonunltheLEDlight(red)turnsonandthe
displayreads“zeroing”(displayopononly).(seegure3)
c)Thezeroingofthedevicewillproceedautomacally.Zeroingiscomplete
whentheLEDturnso,andthedisplayreads0(displayopononly).
d)ReinstallthepressuretubesensuringthattheHighpressuretubeis
connectedtotheportlabeled+,andtheLowpressuretubeisconnected
totheportlabeled−.
Thesellerisobligatedtoprovideawarrantyofveyearsforthedeliv-
eredgoodsregardingmaterialandmanufacturing.Thewarrantyperiod
isconsideredtostartonthedeliverydateoftheproduct.Ifadefect
inrawmaterialsoraproduconawisfound,thesellerisobligated,
whentheproductissenttothesellerwithoutdelayorbeforeexpira-
onofthewarranty,toamendthemistakeathis/herdiscreoneither
byrepairing the defecve product or by delivering freeofcharge to
thebuyeranewawlessproductandsendingittothebuyer.Delivery
costsfortherepairunderwarrantywillbepaidbythebuyerandthe
return costs bytheseller.The warranty does not comprise damages
causedbyaccident,lightning,oodorothernaturalphenomenon,nor-
malwearandtear,improperorcarelesshandling,abnormaluse,over-
loading,improperstorage,incorrectcareorreconstrucon,orchanges
andinstallaonworknotdonebytheseller.Theseleconofmateri-
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.
2)Autozerocalibraon
If the device includes the oponal autozero circuit, no acon is re-
quired.
Autozerocalibraon(-AZ)isanautozerofunconintheformofanau-
tomaczeroingcircuitbuiltintothePCBboard.Theautozerocalibra-
onelectronicallyadjuststhetransmierzeroatpredeterminedme
intervals(every10 minutes). Thefunconeliminatesalloutputsignal
driduetothermal,electronicormechanicaleects,aswellastheneed
fortechnicianstoremovehighandlowpressuretubeswhenperforming
inial or periodic transmier zero point calibraon. The autozero ad-
justmenttakes4secondsaerwhichthedevicereturnstoitsnormal
measuring mode. During the 4 second adjustmentperiod, the output
anddisplayvalueswillfreezetothelatestmeasuredvalue.
Transmiersequippedwiththeautozerocalibraonarevirtuallymain-
tenancefree.
a) Disconnect both pressure tubes from the pressure ports labeled +
and –.
b) Push down the zero buon (joysck) unl the LED light (red)
turns on and the display reads “zeroing” (display opon only). (see
Figure 6)
c) The zeroing of the device will proceed automacally. Zeroing is
complete when the LED turns off, and the display reads 0 (display
opon 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 buon
LED turns ON
Display reads “Zeroing”
LED
Figure 3
The parts le over from installaon should be
recycled according to your local instrucons.
Decommissioned devices should be taken to a
recyclingsitethatspecializesinelectronicwaste.
RECYCLING/DISPOSAL
CONFIGURATION CONTINUED
STEP 4: ZEROING THE DEVICE
9)Flowoutputscale(VOUT):Selectowoutputscaletoimprove
outputresoluon.
Unit: Range:
m3/s 0.025–50
m3/h 100–200,000
cfm 50–100,000
l/s 25–50,000
m/s 1. 0–10 0
f/min 200–20,000
Vout
10 V
V OUTPUT MAX
50.000 m3/s
SELECT
UP
DOWN
10)Responseme:Selectresponsemebetween1.0–20s.
RESPONSE TIME
20 s
SELECT
UP
DOWN
11)Pushselectbuontosavechangesandtoexitmenu.
SELECT
EXIT MENU
SELECT
WARRANTY POLICY
Thelidofthedevicehastobeclosedwhentheoperaontemperature
isbelow0°C.Thedisplayneeds15minutestowarmupifthedevice
isstartedintemperaturebelow0°C.
NOTE!Thepowerconsumponrisesandtherecanbeanaddional
errorof0,015voltswhentheoperaontemperatureisbelow0°C
-40C MODEL: OPERATION IN COLD ENVIRONMENT
STEP 4: ZEROING THE DEVICE CONTINUED
8)Outputmode:Selectoutputvoltage0-10Vor2-10V.By
selecng2-10Vyougainabilitytodetectifthewireisbroken.
OUTPUT MODE
0-10V
SELECT
UP
DOWN
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