Legend
S=Span Adjust
Z=ZeroAdjust
+=SupplyVoltage
-=Common (Neutral)
0=Output
Legend
S=Span Adjust
Z=ZeroAdjust
+=SupplyVoltage
-=Signal
PR-276 PressureTransducerswithmAOutput.
Wiring PR-276 UnitswithVDC Output
PR-276 pressuretransducerswithVDC outputarefieldselectable0-5
VDC or0-10 VDC outputand can be powered witheither12-40 VDC
or12-35VAC.The following describesthe properwiring ofthesepressure
transducerswithVDC output:
1.Removethe blue terminalblock bycarefullypulling itoff the circuit
board
2.Locatethe (+),(-),and (0)terminalmarkingson the board.
3.Attachthe powerwirestothe (+)and (-) terminals.The (-) terminal
isalsothe negativeoutputterminal.
4.Connectthe (0)terminal,whichisthe positiveVdcoutputterminal,
tothe controller’sinputterminal.
5.Re-insertthe terminalblock tothe circuitboardand applypowerto
the unit.
6.Check the appropriateVdcoutputusing avoltmeterseton DC volts
across the (0)and (-) terminals.
PR-276 PressureTransducerswithVDC Output.
ModelPR-276
TechnicalInformation
TI.276-01
DuctPressureTransducer
TYPICALAPPLICATIONS(wiring diagrams)
Figure-1and Figure-2
Illustratetypicalwiring diagramsforthe PR-276 Series,4-
20 mA,two-wireoutputductpressuretransducers.
Figure-1Wiring formAOutputDuctPressure
TransducerswithExternalDC Power
Supply.
Figure-2Wiring formAOutputDuctPressure
TransducerswhereControllerorMeterhas
InternalDC PowerSupply.
Page 2of4
+
–+
–
+
–
mAOutput
TranducerOnly12-40 VDC
PowerSupply
Controller/
Meter/
Recorder
Shield/
Ground
InputSignal
Common
+
–
mAOutput
TranducerOnly
+
–
Controller/
Meter/
Recorder
Shield/
Ground
InputSignal
Common
Wiring Usemaximum12 AWGwireforwiring terminals.
RefertoFigures1,2,3,&4forwiring information
and Figures5&6forjumperdesignations.
Wiring PR-276 UnitswithmAOutput
PR-276 pressuretransducersare4-20 mAoutputunitspowered
witha12-40 VDC supply.The following describesthe properwiring
ofthesepressuretransducerswithmAoutput:
1.Removethe blue terminalblock bycarefullypulling
itoff the circuitboard.
2.Locatethe [+]and [-]terminalmarkingson the board.
3.Attachthe supplyvoltage tothe [+]lead.
4.Connectthe 4-20 mAoutput([-]terminal)tothe
controller’sinputterminal.
5.Ensurethatthe powersupplycommon isattached to
the common busofthe controller.
6.Re-insertthe terminalblock tothe circuitboard
and applypowertothe unit.
7.Check forthe appropriateoutputsignalusing
aDVMseton DC milliampsconnected inseries
withthe [-]terminal.
Caution:Thisproductcontainsahalf-waverectifier
powersupplyand mustnotbe powered off transformers
used topowerotherdevicesutilizing non-isolated full-
waverectifierpowersupplies.
Caution:If you areusing grounded AC,the hotwire
mustbe on the (+)terminal.Also,ifyou areusing a
controllerwithoutbuilt-inisolation,usean isolation
transformertosupplythe PR-276 transducer.
Caution:When multiplePR-276 unitsarepowered from
the sametransformer,damage will resultunless all 24G
powerleadsareconnected tothe samepowerlead on
all devices.It ismandatorythatcorrectphasing be
maintained when powering morethan one devicefrom
asingletransducer.
