Instruction Manual

Copyright HK Instruments 2022 www.hkinstruments. Installaonversion7.02022
STEP 3: CONFIGURATION
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2.
3)Tightenthestrainrelief.
A
24 V
GND
+ Power Supply
24VDC / 24VAC
B
WARRANTY POLICY
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.
1)AcvatethedeviceMenubypushingthetheselectbuonfor2
seconds.
ADDRESS
99
SELECT
UP
DOWN
3)Selectthebaudrate:9600/19200/38400.
BAUD RATE
9600
SELECT
UP
DOWN
4)Selecttheparitybit:None/Even/Odd.
PARITY BIT
NONE
SELECT
UP
DOWN
7)Pushtheselectbuontoexitmenu.
SELECT
EXIT MENU
SELECT
STEP 2: WIRING DIAGRAMS
STEP 4: MODBUS REGISTERS
Funcon04-Readinputregister
Register Parameter descripon Data Typ e Value Range
3x0001 Programversion 16bit 0...1000 0,0...99,00
3x0002 CO2reading 16bit 0...2000 0...2000ppm
3x0004 Temperaturereading 16bit 0...500 0,0...50,0°C
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.
Figure 2 - Wiring diagram
CO2 OFFSET
0 CO
2ppm
SELECT
UP
DOWN
TE OFFSET
0.0 °C
SELECT
UP
DOWN
6)Selecttemperatureoset:+-5°Cor+-9°F
5)SelectCO2oset:+-200CO2ppm,Osetfeatureenables
eld calibraon. This is necessary in demanding applicaons
requiringannualcalibraon.
2)SelecttheaddressforModbus:1...247.
It is recommended to use shielded twisted pair cable for Modbus
cabling.Thecableshieldmustbeearthedonlyinonepoint,normally,
attheendofthemaincable.