Copyright HK Instruments 2022 www.hkinstruments. Installaon version 1.0 2022
Thesellerisobligatedtoprovideawarrantyofveyearsforthedeliv-
eredgoodsregardingmaterialandmanufacturing.Thewarrantyperiod
isconsideredtostartonthedeliverydateoftheproduct.Ifadefect
inrawmaterialsoraproduconawisfound,thesellerisobligated,
whentheproductissenttothesellerwithoutdelayorbeforeexpira-
onofthewarranty,toamendthemistakeathis/herdiscreoneither
byrepairing the defecve product or by delivering free ofcharge 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
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)ManualPushbuonzeropointcalibraon
NOTE:Supplyvoltagemustbeconnectedatleastonehourpriorto
zeropointadjustment.
a)Disconnectbothpressuretubesfromthepressureportslabeled+
and–.
b)PushdownthezerobuonunltheLEDlight(red)turnsonand
thedisplayreads“zeroing”(displayopononly).(seegure3)
c)Thezeroingofthedevicewillproceedautomacallyin4seconds.
ZeroingiscompletewhentheLEDturnso,andthedisplayreads
0(displayopononly).
d)ReinstallthepressuretubesensuringthattheHighpressuretube
isconnectedtotheportlabeled+,andtheLowpressuretubeis
connectedtotheportlabeled−.
3)ViaModbusregister
Makesurethereisnopressureintheductwhenthezeroingisdone
viaModbusregister.
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
ZEROING THE DEVICE CONTINUED
STEP 5: MODBUS REGISTERS
Register Parameter descripon Data Type Value Range
3x0001 Programversion 16 bit 0...9900 0,00...99,00
3x0002 PressurereadingPa 16 bit -24900...24900* ± 2490.0 Pa
3x0003 PressurereadingkPa 16 bit -24900...24900* ±2.4900kPa
3x0004 Pressurereadingmbar 16 bit -24900...24900* ± 24.900 Pa
3x0005 PressurereadingmmWC 16 bit -25400...25400* ±253.91mmWC
3x0006 PressurereadinginWC 16 bit -10000...10000* ±10.000inWC
3x0007 Pressurereadingpsi 16 bit -3610...3610* ±0.3611psi
3x0008 Flowm3/s 16 bit 0...10000 0...100m3/s
3x0009 Flowm3/h 16 bit 0...30000 0...30000m3/h
3x0010 Flowcfm 16 bit 0...30000 0...30000cfm
3x0011 Flowl/s 16 bit 0...3000 0...3000l/s
3x0012 Velocitym/s 16 bit 0...1000 0...100m/s
3x0013 Velocityf/min 16 bit 0...5000 0...5000f/min
Funconcode04-Readinputregister
MODBUS REGISTERS CONTINUED
Funconcode05-Writesinglecoil
Register Parameter descripon Data Type Value Range
0x0001 Zeropointcalibraon Bit 0 0...1 On-O
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.
*)Thevalueandrangearedeterminedbytheselectedpressurerange±120Pa,±240Pa,±620Pa,
±1240Pa,±2490Pa.Thevaluesshowninthetablewhenthelargestareaisselected.
Funcon code 03 - Read input holding register, Funcon code 06 -
Writesingleregister,Funconcode16-Writemulpleregisters
Register Parameter descripon Data Type Value Range
4x0001 Manufacturer 16 bit 0...8
0=FläktWoods,1=Rosenberg,
2=Nicotra-Gebhardt,3=Comefri,
4=Ziehl,5=ebm-papst,6=Gebhardt,
7=Nicotra,8=Commonprobe
4x0002 Formulaunit(ifmanufacturer
selecon=commonprobe) 16 bit 0...5 0:m3/s,1:m3/h,2:cfm,3:l/s,
4:m/s,5:f/min
4x0003 K-factorinteger 16 bit 0...9999 0...9999
4x0004 K-factordecimal 16 bit 0...999 0...999
4x0005 Responseme 16 bit 0...20 0=0.4s,1=1s,2=2s...20=20s
4x0006 PressureRange 16 bit 0...4 0=±120Pa,1=±240Pa,2=±620Pa,
3=±1240Pa,4=±2490Pa
