IM 01C21F01-01E
2-4
2. HANDLING CAUTIONS
• Entity Installation Requirements
Vmax
*
Voc or Vt, Imax
*
Isc or It,
Pmax (IS Apparatus)
*
Pmax (Barrier)
Ca
*
Ci + Ccable, La
*
Li + Lcable
Note 3. Installation
• Barrier must be installed in an enclosure that meets
the requirements of ANSI/ISA S82.01.
• Control equipment connected to barrier must not use
or generate more than 250 V rms or V dc.
• Installation should be in accordance with ANSI/ISA
RP12.6 “Installation of Intrinsically Safe Systems for
Hazardous (Classified) Locations” and the National
Electric Code (ANSI/NFPA 70).
• The configuration of associated apparatus must be
FMRC Approved.
• Dust-tight conduit seal must be used when installed
in a Class II, III, Group E, F and G environments.
• Associated apparatus manufacturer’s installation
drawing must be followed when installing this
apparatus.
• The maximum power delivered from the barrier
must not exceed 0.9 W.
• Note a warning label worded “SUBSTITUTION OF
COMPONENTS MAY IMPAIR INTRINSIC
SAFETY,” and “INSTALL IN ACCORDANCE
WITH DOC. No. IFM012-A12 P.1 and 2.”
Note 4. Maintenance and Repair
• The instrument modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void
Factory Mutual Intrinsically safe and Nonincendive
Approval.
F0203.EPS
Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G
EJA Series Pressure
Transmitters
EJA Series Pressure
Transmitters
Safety Barrier
Supply
Supply
Hazardous Location
Nonhazardous Location
Hazardous Location
Nonhazardous Location
General
Purpose
Equipment
+
–
+
–
+
–
+
–
+
–
+
–
[Intrinsically Safe]
Class I, II, Division 2,
Groups A, B, C, D, E, F, G
Class III, Division 1.
Not Use
Safety Barrier
[Nonincendive]
General
Purpose
Equipment
b. FM Explosionproof Type
Caution for FM explosionproof type.
Note 1. Model EJA Series differential, gauge,
and absolute pressure transmitters with
optional code /FF1 are applicable for
use in hazardous locations.
• Applicable Standard: FM3600, FM3615, FM3810,
ANSI/NEMA250
• Explosionproof for Class I, Division 1, Groups B,
C and D.
• Dust-ignitionproof for Class II/III, Division 1,
Groups E, F and G.
• Outdoor hazardous locations, NEMA 4X.
• Temperature Class: T6
• Ambient Temperature: –40 to 60
°
C
• Supply Voltage: 42 V dc max.
• Output signal: 4 to 20 mA
Note 2. Wiring
• All wiring shall comply with National Electrical
Code ANSI/NEPA70 and Local Electrical Codes.
• When installed in Division 1, “FACTORY
SEALED, CONDUIT SEAL NOT REQUIRED.”
Note 3. Operation
• Keep the “CAUTION” nameplate attached to the
transmitter.
CAUTION: OPEN CIRCUIT BEFORE REMOV-
ING COVER. SEAL ALL CONDUITS WITHIN
18 INCHES. WHEN INSTALLED IN DIV.1,
“FACTORY SEALED, CONDUIT SEAL NOT
REQUIRED.” INSTALL IN ACCORDANCE
WITH THE INSTRUCTION MANUAL IM 1C22.
• Take care not to generate mechanical sparking
when accessing to the instrument and peripheral
devices in a hazardous location.
Note 4. Maintenance and Repair
• The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void Factory Mutual Explosionproof Ap-
proval.
c. FM Intrinsically Safe Type/FM
Explosionproof Type
Model EJA Series pressure transmitters with
optional code /FU1 can be selected the type
of protection (FM Intrinsically Safe or FM
Explosionproof) for use in hazardous loca-
tions.
