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Page
3
of
2
36931-751-16
Safety Instructions
29.10.2013
Dr. Klausgrete
Drawing No.
Designation
Revision
00
Hazardous area Zone 0
Input parameters:
Intrinsically safe circuit in type
of protection Ex ia
Ui = 25V Pi = any
Ci = 0nF Li = 0mH
Ii
Ta
Temp. class
210mA
40°C
T6
325mA
60°C
T4
370mA
40°C
T4
Output parameters:
Intrinsically safe circuit in
type of protection Ex ia
The output parameters are
given by the connected
evaluation unit.
Hazardous area Zone 1
Load cell
#1 … #8
Ex ia
or
Ex ib
Evalaution unit
with
Ex ia
or
Ex ib
output circuit to
the load cells
Output parameters:
Intrinsically safe circuit in
type of protection Ex ia
or Ex ib. The output
parameters are given by
the connected evaluation
unit.
Load cell
#1 … #8
Ex ia
Evalaution unit
with
Ex ia
output
circuit to the load
cells
Input parameters:
Intrinsically safe circuit in type
of protection Ex ia or Ex ib
Ui = 25V Pi = any
Ci = 0nF Li = 0mH
Ii
Ta
Temp. class
210mA
40°C
T6
325mA
60°C
T4
370mA
40°C
T4
Hazardous area Zone 20
Input parameters:
Intrinsically safe circuit in type
of protection Ex ia
Ui = 25V Pi = any
Ci = 0nF Li = 0mH
Ii
Ta
325mA
60°C
370mA
40°C
Output parameters:
Intrinsically safe circuit in
type of protection Ex ia.
The output parameters are
given by the connected
evaluation unit.
Load cell
#1 … #8
Ex ia
Evalaution unit
with
Ex ia
output
circuit to the load
cells
Hazardous area Zone 21
Output parameters:
Intrinsically safe circuit in
type of protection Ex ia or
Ex ib. The output
parameters are given by
the connected evaluation
unit.
Evalaution unit
with
Ex ia
or
Ex ib
output circuit to
the load cells
Load cell
#1 … #8
Ex ia
or
Ex ib
Cable junction box
Ex ia IIC T6/T4 Ga
-20°C
≤
Ta
≤
40°C/60°C
Cable junction box
Ex ia IIC T6/T4 Ga
-20°C
≤
Ta
≤
40°C/60°C
Cable junction box
Ex ia IIIC T90°C Da
-20°C
≤
Ta
≤
40°C/60°C
Cable junction box
Ex ia IIIC T90°C Da
-20°C
≤
Ta
≤
40°C/60°C