FLEX Ex Thermocouple/RTD Input Module
29
Publication
1797-IN004G-EN-P - August 2017
Table 1
Table 2
The entity concept allows interconnection of intrinsically safe apparatus
with associated apparatus not specifically examined in combination as a
system when the approved values of V
oc
and I
sc
or V
t
and I
t
of the associated
apparatus are less than or equal to V
max
and I
max
of the intrinsically safe
apparatus and the approved values of C
a
and L
a
of the associated apparatus
are greater than C
i
+ C
cable
and L
i
+ L
cable
respectively for the intrinsically safe
apparatus. The internal capacitances Ci of the terminal base must be taken
into account to verify the intrinsic safety.
Simple apparatus is defined as a device which neither generates nor
stores more than 1.2V, 0.1 A, 20
μ
J, or 25 mW.
Wiring
Method
Channel Terminals
V
oc
(V)
I
sc
(mA)
V
t
(V)
I
t
(mA)
Groups
C
a
(
μ
F)
L
a
(mH)
1 and 2
Any one
channel,
for
example,
ch0
0(+), 1(H),
2(L), 3(-)
9.0
37.0
-
-
A, B
3.0
20.0
C, E
9.0
60.0
D, F, G
24.0
160.0
37, 38, 39
(CJC0)
or
46, 47, 48
(CJC1)
9.0
1.0
-
-
A, B
3.0
1000.0
C, E
9.0
1000.0
D, F, G
24.0
1000.0
0(+), 1(H),
2(L), 3(-)
37, 38, 39
(CJC0)
or
46, 47, 48
(CJC1)
-
-
9.0
38.0
A, B
3.0
20.0
C, E
9.0
60.0
D, F, G
24.0
160.0
Terminals
V
t
(V)
I
t
(mA)
Groups
C
a
(
μ
F)
L
a
(
μ
H)
Male Bus
Connector
5.8
400
A-G
3.0
3.0
Summary of Contents for FLEX Ex 1797-IRT8
Page 33: ...FLEX Ex Thermocouple RTD Input Module 33 Publication 1797 IN004G EN P August 2017 Notes ...
Page 34: ...34 FLEX Ex Thermocouple RTD Input Module Publication 1797 IN004G EN P August 2017 Notes ...
Page 35: ...FLEX Ex Thermocouple RTD Input Module 35 Publication 1797 IN004G EN P August 2017 Notes ...
