Yokogawa EJA115 - Manual (Page 12)

IM 01C22T02-01E 2-4
2. HANDLING CAUTION
᭹ Installation Diagram
(Nonincendive, Division 2 Installation)
Non-Hazardous Location
Hazardous Location
F0206.EPS
Terminator
(Nonincendive)
Power Supply
Field Instruments
Pressure
Transmitter
Field Instruments
ϩ
Ϫ
ϩ
Ϫ
ϩ
Ϫ
Vmax = 32 V
Ci = 3.52 nF
Li = 0
␮ H
FM Approved Associated Nonincendive
Field Wiring Apparatus
Vt or Voc
It or Isc
Ca
La
*1: Dust-tight conduit seal must be used when installed
in Class II and Class III environments.
*2: Installation should be in accordance with the
National Electrical Code (ANSI/NFPA 70) Sections
504 and 505.
*3: The configuration of Associated Nonincendive
Field Wiring Apparatus must be Factory Mutual
Research Approved under FISCO Concept.
*4: Associated Nonincendive Field Wiring Apparatus
manufacturer’s installation drawing must be
followed when installing this equipment.
*5: No revision to drawing without prior Factory
Mutual Research Approval.
*6: Terminator and supply unit must be FM Approved.
*7: If use ordinary wirings, the general purpose
equipment must have nonincendive field wiring
terminal approved by FM Approvals.
*8: The nonincendive field wiring circuit concept
allows interconection of nonincendive field wiring
apparatus with associated nonincendive field wiring
apparatus, using any of the wiring methods permit-
ted for unclassified locations.
*9: Installation requirements;
Vmax
м Voc or Vt
Imax = see note 10.
Ca
м Ci + Ccable
La
м Li + Lcable
*10: For this current controlled circuit, the parameter
(Imax) is not required and need not be aligned with
parameter (Isc or It) of the barrier or associated
nonincendive field wiring apparatus.
Electrical Data:
Maximum Input Voltage Vmax: 32 V
Maximum Internal Capacitance Ci: 3.52 nF
Maximum Internal Inductance L
i : 0
␮H
c. FM Nonincendive approval
Model EJA Series differential, gauge, and absolute
pressure transmitters with optional code /FN15.
• Applicable standard: FM3600, FM3611, FM3810
• Nonincendive Approval
Class I, Division 2, Groups A, B, C and D
Class II, Division 2, Groups F and G
Class III, Division 1 and
Class I, Zone 2, Group IIC in Hazardous
(Classified) Locations.
Temperature Class: T4
Ambient Temperature: –40 to 60
°
C
Ambient Humidity: 0 to 100%R.H. (No condensation)
Enclosure: NEMA Type4X
• Electrical Parameters:
Vmax = 32 Vdc
Ci = 3.52 nF
Li = 0
µ
H
• Caution for FM Nonincendive type. (Following
contents refer to “DOC. No. NFM012-A08 p.1 and
p.2”)
᭿
NFM012-A08
Installation Diagram:
Safe Area
Hazardous Area
F0207.EPS
Terminator
Terminator
Field Instruments
Pressure
Transmitter
Field Instruments
Supply
ϩ
Ϫ
ϩ
Ϫ
ϩ
Ϫ
Note:
1: Dust-tight conduit seal must be used when installed
in Class II and Class III environments.