Copal PA-838-D Series User manual

1
1.Attentiononhandling
2.Partnumberdesignation
3.Instructionforuse
ThankyouforpurchasingNIDECCOPAL
ELECTRONICSCORP.product.
Inordertousetheproductcorrectlyandmost
appropriately,pleasecompletelyreadthismanual
beforeuseandkeepitforfuturereference.
PressureTransducers
withAmp.
INSTRUCTIONMANUALVer.1.1
PA-838-D
series
…
Nishi-ShinjukuKimurayaBidg.,7-5-25
Nishi-ShinjukuShinjuku-kuTokyo160-0023,Japan
Phone：[phone]FAX：[phone]
Formoredetailsinformationpleaseaskforthenearest
distributororthefollowingsalescenter.
NIDECCOPALELECTRONICSCORPRATION
PA−838−□□□D−□□
Fitting Blank:Rc1/4
F2:Flarefitting（7/16-20UNF）
Ratedpressurerange １０１：１０kPa
５０１：５０kPa
１０２：１００kPa
Thiscautionmarkdescribeswhenthereisapossibilitythatusermaysufferfromdamageorphysicaldamage
mayoccuriftheproductisusedimproperly.
・Theapplicationmediumofthisproductiscorrosivegases/liquidscompatiblewithSUS304.
・Neverinsertanyforeignmatters,likewireorneedle,intothepressureporthole.Itcausesthebreakdown.
・Donotapplyexceedingthemaximumpressureasshowninthespecification.Theexcessivepressuremayaffectthesensorcharacteristicsand
maymakeaccuratemeasurementimpossible.
・Donotgiveunnecessaryforcetothemainbodyandcablewheninstallingtheproduct.Theexcessivepressuremayaffectthesensorcharacteris-
ticsandmaymakeaccuratemeasurementimpossible.
・Besuretoconnecttheoutputterminalscorrectly.Wrongconnectionwillcausedamageoftheinternalelectriccircuit.
・Pleasesupplyastablepowersourceanddonotexceedthespecifiedsupplyvoltage.Itwillcausedamageoftheelectriccircuit.
・Pleasemakeahigh-pressuresidethesameasthepipingconditiononalow-pressuresidewhenyoulaypipes.（Diameterandlengthofthe
tubeetc.）Whenatransitionalpressurefluctuationiscaused,itcausesthebreakdowniftheconditionisnotthesame.
・Thisproductisdustproofanddripproof（toIP65ofIECstandards）andisnotsuitableforuseinenvironmentsrequiringhigherstandards.

・Pleasesupplyastablepowersource.
・Placethewiringasfarawayaspossiblefromthepowerlinescarryinglargepower.Theoutputbecomesunstablebecauseofthenoiseetc.
Pleaseconfirmthepartnumberoftheproductyoupurchased.





・F2typeincludes2piecesofflarefittinginthesamepackage.
Ratedpressure,maximumpressure,andlinepressurearedecidedtothisproductin
eachpressurerange.Becarefulwhenyouusethisproduct.

Ratedpressure:Pressurevalueinwhichspecificationofdifferentialpressuresensorisguaranteed.
（Onthespecification,itisprovidedbylowpressuresideisequalto0kPa.）
Maximumpressure:Maximumpressurevaluethatcanbeappliedonlytooneofhighpressuresideorlowpressureside.
Linepressure:Maximumpressurevalueinwhichproductisnotdamagedwhenequalpressuretohighpressuresideandlowpressuresideisapplied.

・Piping
Thefitting forPA-838-D isRc1/4. Usean appropriatepipe toits fitting.To securethe fitting,
holdtheflange-partwhensecuringthefitting.ThetighteningtorqueofR1/4thatourcompany
recommendsisfrom12N・mto14N・m

・Valve
Inordertopreventfromapplyingpressureexceedingthespecification,pipingisdonewiththe
followingvalve.（Pleaserefertoleftfigure.）
Followtheprocedurebelowwhenapplyingpressure:
（Ⅰ）ValveA,BmustbeclosedandvalveCmustbeopenwhenpiping.
（Ⅱ）Slowly,openvalveA.
（Ⅲ）Whenthepressureisstabilized,closevalveC
（Ⅳ）Slowly,openvalveB

・Air-bleeding
Residual air in the piping can result inaccurate measurement and causes difference in high-
pressuresideandlow-pressuresidewhichcouldresultindevelopingexcessivepressure.Please
Air-bleedthesensorafterinstallation.DuringAir-bleed,donotcompletelyremovetheair-bleed
screw.Pleasebeawarethataccuratemeasurementcannotbedonewithoutthestopballbelow
theair-bleedscrew.Pleasetightentheair-bleedscrewfromtheplacewherethescrewstoppedby
1／8rotations.（standardtighteningtorque1.5N・m）

・Wiring
WiretheredwiretoDC24V（+）,andwhitewirethoughloadresistance（below500ohm）,and
toDC.COM.Incasethereisapossibilityofapplyingpressureovertheratedpressure,setthe
load resistance to 500ohm.  In case the pressure exceeds rated pressure, the 500ohm load
resistancelimitsthepowercurrenttoabout28mA,thuspreventfromcircuitdamagecausedby
overloadedpowercurrent.
2
4.Installation
5.Specifications
Item
Pressurerange
Pressurereference
Ratedpressurerange
MaximumPressure（Singleside）
Linepressure（Bothside）
Operatingtemp.range
Compensatedtemp.range
Operatinghumidity
Storagetemp.
Pressuremedium
Weight
Enclosedliquid
Protectivestructure
Supplyvoltage


Linearity/Hysteresis


Response
Gravitationaleffect
Specification

Differential


2MPa
−20〜70℃
0〜50℃
35〜85%RH
−20〜70℃
Corrosivegases/liquidscompatiblewithSUS304.
About410g,about500gforF2
Siliconeoil
IP65
24V±10%DC
4±0.2mA
16±0.2mA
±0.5%FS


Approx.2ms.
±3%FSmax.

101

10kPa
200kPa













±0.10%FS
±0.10%FS

±5%FSmax.

501

50kPa
300kPa














102

100kPa
500kPa
















±1%FSmax.
Outputcurrent
Thermalerror
（0to50℃）
Zero
Span
Zero
Span
±0.05%FS
±0.05%FS
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