EDS13-18B Datasheet, PDF (1/2 Pages) Fuji Electric – SAFETY BARRIER

SAFETY BARRIER
DATA SHEET
PWX
This safety barrier is used for intrinsic safety explosion-
proofing of electronic instrumentation systems to ensure safe
operation in the process of generating explosive gases.
It is used in combination with field instruments installed in
hazardous area as an intrinsic safety explosion-proof system.
SPECIFICATIONS
Explosion-proof structure:

Intrinsic safety explosion-proof
Applicable gas: FCX transmitter gas (3aG4)

Optical switch signal converter gas
(3aG4 and 2G4)

Optical repeater gas (3aG4 and 2G4)

Optical fiber type multi-point tempera-
ture converter gas (3aG4 and 2G4)

FCX-AII, AIII series transmitter (Ex ia
IICT4)
Safety hold rating:

250V AC and 250V DC
Combination instrument:
FCX Series transmitter, optical repeater,
optical switch signal converter, opti-
cal fiber type multi-point temperature
converter (Inspection guarantee No. of
safety barrier should be attached to in-
strument)

FCX-AII, AIII series transmitter (Device
Certification)
Ambient temperature of combination instrument:

60˚C or less
Modification of combination instrument:
Modification is prohibited (unit can be
replaced).
Grounding:
Class A grounding
Mounting method:

Safety barrier should be installed in
non-hazardous area using the supplied
clip screw.
Terminal structure:

Input/output terminal; rod type plug-in
system [up to 4mm²(12AWG)]

Earth; M4 screw terminal (with nut)
Rated operating voltage:
25.8V DC ±0.5%
Total resistance: Terminal 1 to 3 ... 340Ω
Terminal 2 to 4... [0.9V+20Ω] or short
Intrinsic safety max. voltage:

28V
Intrinsic safety max. current:

93mA
Fuse:
50mA
External wiring condition:
Combination
instrument
Applicable
gas
Allowable external
wiring resistance
(less than ) _Note)
Allowable external Allowable external
wiring static capacity wiring inductance
(less than F )
(less than mH )
FCX transmitter 3aG4
16
0.059
1
Optical switch
signal converter
3aG4
2G4
under application under application under application
Optical repeater ^3aG4
86
0.022
1
2G4
86
0.22
5
Optical fiber
3aG4
86
0.022
1
type multi-point
temperature
2G4
86
0.22
5
converter
FCX-AII, AIII
series transmitter
ExiaIICT4
30
0.0504
1.91
Note) Indicates allowable resistance of external wiring terminal when input
resistance 250Ω of upper distributor is substracted.
Explosion-proof structure:

Intrinsic safety explosion-proof
Allowable common mode voltage:

AC 0.5Vrms
Error:
0.01% or less
Ambient temperature:

5 to 95% RH
Error:
0.01% or less
Dimensions (H×W×D):

61.5×93.5×14.2mm
Mass:
About 125g
Structure:
Indoor installation structure, plastic case
Code symbols
1 2345678
PWX A 0 0 1
Description
Application
A
FCX transmitter (4 to 20mA, 2-wire system), 3aG4
Optical switch signal converter, 3aG4 (under application)
Optical switch signal converter, 2G4 (under application)
B
Optical repeater, 3aG4
Optical repeater, 2G4
C
Optical fiber type multi-point temperature converter,3aG4
Optical fiber type multi-point temperature converter,2G4
D
Entity, ia IIC (FCX-AII, AIII transmitter can be combined.)
Object
A
TIIS Intrinsic safety explosion-proofing
Scope of delivery
Main unit, mounting clip
EDS13-18b
Date Apr. 1, 2011