Wiring Diagrams; Example Of Non-Explosionproof System; Example Of Intrinsically Safe Explosionproof System - YOKOGAWA SC202G User Manual

2-2 Appendix

12-2. Wiring diagrams

1. Example of Non-Explosionproof System

(a) SC210G-A or SC210G-B
SC210G–A, SC210G–B
Conductivity sensor
*1
T1
T1
T2
T2
C1
C1
C2
C2
(b) SC4AJ, SC8SG
SC4AJ, SC8SG
Conductivity sensor
*1

2. Example of Intrinsically Safe Explosionproof System

(a) SC210G-A or SC210G-B
SC210G-A,SC210G-B
Conductivity sensor
*1
T1
T1
T2
T2
C1
C1
C2
C2
*1: This cable is specified by the additional code of an conductivity sensor.
*2: Use two-wire cable with OD (Outside Diameter) of 6 to 12 mm.
(b) SC4AJ, SC8SG
SC4AJ, SC8SG
Conductivity sensor
*1
IM 12D08B02-01E
SC202G
Conductivity transmitter
11 Temper-
+
11
ature
12
–
12
sensor
13
13 G
14
14
15 Electrode
15
16
16
Ground
*3 (100Ω or less)
SC202G
Conductivity transmitter
11
*1 : This cable is specified by the additional code of an conductivity sensor.
11 Temperature
12
*2 : Use a two-conductor shielded cable of OD 6 to 12mm.
sensor
12
13
The cable length is : Max. 2000m (also the minimum operating voltage of conductivity
13
14
transmitter must be obtained)
14
Conductivity
15
*3 : Conduct grounding without fail on the conductivity transmitter
sensor
15
16
(Grounding reistance : 100 ½ or less)
16
SC202S
Conductivity transmitter
11
Temper-
+
11
ature
12
-
12
sensor
13
G
13
14
14
Electrode
15
15
16
16
Ground
to earth
SC202S
Conductivity transmitter
11
11
Temperature
12
sensor
12
13
13
14
*1 : This cable is specified by the additional code of an conductivity sensor.
14 Conductivity
15
sensor
15
16
16
PH201G (Style B)
Dedicated distributor for EXA202
*2
+
+
A ( ) C Output
–
(1 to 5V DC)
–
B ( ) D
+
F Output
–
(1 to 5V DC)
H
a c
b d
HOLD FAIL
Relay contacts
Safety Barrier
*2
F09.EPS
SDBT distributor
*2
+
+
1 ( ) A Output
–
(1 to 5V DC)
–
2 ( ) B
+
F Output
–
(1 to 5V DC)
H
F08.EPS
F09.EPS
Distributor
Output
F007-1.eps