YOKOGAWA EJX Series - Page 14

  <2.HandlingCautions>
12
IM01C25A01-01E
Transmitter
Supply
Safety Barrier
*1
Nonhazardous Location
[Installation Diagram] (for EJX910A and EJX930A)
Hazardous Location
+
–
+
–
F0211.ai
Sensor out
RTD sensor
*2
● Without pulse output
● With pulse output
Transmitter
Supply
Safety Barrier
*1
Nonhazardous Location
Hazardous Location
+
–
+
–
+
Sensor out
RTD sensor
*2
Safety Barrier
*1
+
–
Pulse
*1: • Inanysafetybarriersusedtheoutputcurrentmustbe
limitedbyaresistor“R”suchthatIo=Uz/R.
 • ThesafetybarriershallbecertiedbynotifybodyEUas
ATEX.
 • Whenusingnonisolationbarrier,connect toISearthing
system.
*2: • RTDsensorispreparedbytheuser.
 • Thesensorsignallinemustwithstandatestvoltageof
500VAC.
WARNING

TosatisfyIP66orIP67,applywaterproofglandstothe
electricalconnectionport.
c. ATEXFlameproofType
CautionforATEXameprooftype.
Note1. ModelEJX/EJA-ESeriespressuretransmitters
withoptionalcode/KF22forpotentially
explosiveatmospheres:
• No.KEMA07ATEX0109X
• ApplicableStandard:EN60079-0:2009,
EN60079-1:2007,EN60079-31:2009
• TypeofProtectionandMarkingCode:
 ExdIICT6...T4Gb,ExtbIIICT85°CDb
• Group:II
• Category:2G,2D
• Enclosure:IP66/IP67
• TemperatureClassforgas-poof:
T6,T5,andT4
• AmbientTemperatureforgas-proof:
–50to75°C(T6),–50to80°C(T5),and
–50to75°C(T4)
• MaximumProcessTemperature(Tp.)forgas-
proof:
 85°C(T6),100°C(T5),and120°C(T4)
• MaximumSurfaceTemperaturefordust-proof:
T85°C(Tamb.:–30*to75°C,Tp.:85°C)
*–15°Cwhen/HEisspecied.
Note2. ElectricalData
• Supplyvoltage:42Vdcmax.
• Outputsignal:4to20mA
Note3. Installation
• Allwiringshallcomplywithlocalinstallation
requirement.
• Thecableentrydevicesshallbeofacertied
ameprooftype,suitablefortheconditionsofuse.
Note4. Operation
• Keepthe“WARNING”labelattachedtothe
transmitter.
 WARNING:AFTERDE-ENERGIZING,DELAY
5MINUTESBEFOREOPENING.WHENTHE
AMBIENTTEMP.≥65°C,USEHEAT-RESISTING
CABLEANDCABLEGLAND≥90°C.
• Takecarenottogeneratemechanicalsparking
whenaccessingtotheinstrumentandperipheral
devicesinahazardouslocation.
Note5. SpecialConditionsforSafeUse
WARNING

• Electrostaticchargemaycauseanexlosion
hazard.Avoidanyactionsthatcausethe
gerenationofeletrostaticcharge,suchasrubbing
withadryclothoncoatingfaceoftheproduct.
• InthecasewheretheenclosureofthePressure
Transmitterismadeofaluminium,ifitismounted
inanareawheretheuseofcategory2Dapparatus
isrequired,itshallbeinstalledinsuchaway
thattheriskfromelectrostaticdischargesand
propagatingbrushdischargescausedbyrapid
owofdustisavoided.
• Theinstrumentmodicationorpartsreplacement
byotherthananauthorizedRepresentativeof
YokogawaElectricCorporationisprohibitedand
willvoidthecertication.
• TosatisfyIP66orIP67,applywaterproofglandsto
theelectricalconnectionport.