Yokogawa EJA110A - Manual (Page 12)

IM 01C21B01-01E 2-4
2. HANDLING CAUTIONS
Note 2. Entity Parameters
• Intrinsically Safe Apparatus Parameters
[Groups A, B, C, D, E, F and G]
Vmax = 30 V
Ci = 22.5 nF
Imax = 165 mA Li = 730
µ
H
Pmax = 0.9 W
* Associated Apparatus Parameters
(FM approved barriers)
Voc
≤
30 V Ca > 22.5 nF
Isc
≤
165 mA La > 730
µ
H
Pmax
≤
0.9W
• Intrinsically Safe Apparatus Parameters
[Groups C, D, E, F and G]
Vmax = 30 V
Ci = 22.5 nF
Imax = 225 mA Li = 730
µ
H
Pmax = 0.9 W
* Associated Apparatus Parameters
(FM approved barriers)
Voc
≤
30 V Ca > 22.5 nF
Isc
≤
225 mA La > 730
µ
H
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.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. FACTORY SEALED, CONDUIT
SEAL NOT REQUIRED. INSTALL IN ACCOR-
DANCE WITH THE INSTRUCTION MANUAL
IM 1C22.