Operation Manual

<14. EXPLOSION PROTECTED TYPE INSTRUMENT>
14-2
IM 01F06A00-01EN
(Integral Type Vortex Flowmeter)
Temperature Class Process Temperature
T4 -29°C to +135°C
T3 -29°C to +199°C
T2 -29°C to +250°C
T1 –29°C to +250°C
(Remote Type Vortex Flow Detector)
Temperature Class Process Temperature *
T6 –196°C to +84/[+79]°C
T5 –196°C to +100°C
T4 –196°C to +135°C
T3 –196°C to +199°C
T2 –196°C to +299/[+289]°C
T1 –196°C to +449/[+439]°C
*: Use /HT option above 250°C, use /LT option below -29°C,
[ ] for /MV option.
Electrical data:
Supply and Output Circuit
(SUPPLY + and -, PULSE + and -);
Maximum Input Voltage Ui: 30Vdc
Maximum Input Current Ii: 300mA
(Refer to Contact rating for pulse output.)
Maximum Input Power Pi: 0.9 W
Internal Capacitance Ci: 14nF
Internal Inductance Li: 0mH
Electrical Connection: ANSI 1/2 NPT female,
ISO M20 X 1.5 female
Special conditions for safe use
• Precautionsshallbetakentominimizetherisk
fromelectrostaticdischargeofpaintedparts.
• Whentheenclosureoftheowmeterorthe
owconverteraremadeofaluminum,ifitis
mountedinanareawheretheuseofEPLGa
equipmentisrequired,itmustbeinstalledsuch
that,evenintheeventofrareincidents,ignition
sourcesduetoimpactandfrictionsparksare
excluded.
• Thedielectricstrengthofatleast500Va.c.
r.m.s.betweentheintrinsicallysafecircuitsand
theenclosureoftheowmeterortheconverter
islimitedonlybytheovervoltageprotection.
(2) Installation
WARNING
• Allwiringshallcomplywithlocalinstallation
requirements and local electrical code.
• Usethesuitableheat-resistingcables(over
90°C)forthedigitalYEWFLOModelDY
SeriesVortexFlowmeterwhentheambient
temperatureexceeds60°Cand/orthe
process temperature exceeds 200°C.
• CableglandsandadaptersshallbeofEx“d”
forEx“d”installations.
• Cableglandsandadaptersshallbeinstalled
soastomaintainthespecieddegreeof
protection(IPCode)oftheowmeter.
Thegroundingterminalsarelocatedontheinside
andoutsideoftheterminalarea.
Connectthecabletogroundingterminalin
accordancewithwiringprocedure(1)or(2).
Case
Cable
Screw
(1) Internal grounding terminal (2) External grounding terminal
Washer
Washer
Cable
Clamp
Screw
F1401.ai
Figure 14.1 Wiring Procedure for Grounding
Terminals