Yokogawa EJA115 - Manual (Page 12)

IM 01C22K01-01E 2-4
2. HANDLING CAUTIONS
• Intrinsically Safe Apparatus Parameters
[Groups C, D, E, F and G]
Vmax = 30 V
Ci = 22.5 nF
Imax = 225 mA Li = 730 µH
Pmax = 0.9 W
* Associated Apparatus Parameters
(FM approved barriers)
Voc
≤ 30 V Ca > 22.5 nF
Isc ≤ 225 mA La > 730 µH
Pmax ≤ 0.9 W
• 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.
F0203-1.EPS
Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G
EJA Series Pressure
Transmitters
Safety Barrier
Supply
Hazardous Location Nonhazardous Location
General
Purpose
Equipment
+
–
+
–
+
–
+
–
[Intrinsically Safe]
F0203-2.EPS
EJA Series Pressure
Transmitters
Supply
Hazardous Location Nonhazardous Location
+
–
+
–
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. FACTORY SEALED, CONDUIT
SEAL NOT REQUIRED. INSTALL IN ACCOR-
DANCE 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.