Fujimoto FKK 4 User Manual
67
Figure 1. FCX-A/C Series transmitter, Intrinsically Safe Installation for BASEEFA
Notes:
1.
The electrical circuit in the hazardous area must be capable of withstanding an A.C. test
voltage of 500 volts rms to earth of frame of the apparatus for one minute.
2.
The capacitance and inductance of the hazardous area cables must not exceed the values
shown in Table 1.
3.
The installation, including barrier earthing arrengements, must comply with the installation
requirements of the country of use.
e.g. in the U.K., BS 5345: Part 4:1977
4.
Any shunt zenor diode safety barrier certified by an EEC Approved Body to [EEx ia] IIC
having the following maximum parameters;
Uz = 28 Vdc, Imax;out = 93 mAdc, Wmax;out = 0.65 W
The output current of the barrier must be limited by a resistor “R” that;
Imax; out = Uz / R
CK+
CK–
+
–
+
–
FXE
CK+
CK–
+
–
FXE
CK+
CK–
Shunt Bar
+
–
FXE
CK+
CK–
+
–
FXE
FCX-A/C Series Transmitter
BAS No. Ex 95D2444
EEx ia IIC T4 (Ta
<
85
°C)
EEx ia IIC T5 (Ta
<
40
°C)
FXW
Hand Held Communicator
BAS No. Ex 90C2370X
EEx ia IIC T3 (Ta
<
85
°C)
EEx ia IIC T4 (Ta
<
40
°C)
=
=
FXE
Field Indicator
BAS No. Ex 93C2154
EEx ia IIC T4 (Ta
<
85
°C)
EEx ia IIC T5 (Ta
<
50
°C)
N = (n
1
+ n
2
)
<
3 (for IIC, IIB, IIA)
=
=
=
=
=
The HART Communicator
BAS No. Ex 92C2516
Hazardous Area
Non-hazardous Area
or
Measurement Technology Ltd.
Communicator
MTL611 BAS No. Ex 91C2323
CNF61 BAS No. Ex 91C2071
or
Field Indicator (FXE)
n
1
n
2
Field Indicator (FXE)
CK+
CK–
+
–
FXE
CK+
CK–
CK+
CK–
+
–
FXE
BARRIER
(See Note 4)
NON-HAZARDOUS AREA APPARATUS
FCX-A/C Series Transmitter System
SYST BAS No. EX 95D2445
Fuji Electric Co., Ltd.
System Label
Which is unspecified except that it must
not be supplied from nor contain under
normal or abnormal conditions, a source
of potential with respect to earth in excess
of 250 volts RMS or 250 volts DC.
(See Note 3)
Ex
Table 1: Cable Parameters
Capacitance [µF]
<
3
0.085
0.265
0.715
IIC
IIB
IIA
Group
N
<
3
1.6
5.6
15.6
<
3
55
165
440
Inductance [mH] or L/R Ratio [µH/
Ω
]
==
N: Number of field indicator (FXE)
<
3
=
=