Walchem W600 Series Instruction Manual page 24

SENSOR INPUT CARD LABEL
ECOND CCOND
1
TEMP– TEMP– TEMP–
2 TEMP+ TEMP+ TEMP+
3
R-SHLD
4 RCV
5
RCV–
6
RCV+
7
X-SHLD SHIELD SHIELD
8
9
10 XMT+ XMT
11 XMT–
12
pH/ORP
CCOND
DIS
1
TEMP– TEMP–
2
TEMP+ TEMP+
3
IN–
SHIELD
4
RCV IN+
5
–5V
6 XMT
7
+5V
8
9
10
11
12 SHIELD or use DI SHIELD (TB3 7-12)
COMBINATION SENSOR/ANALOG CARD LABEL
Figure 7 Contacting Conductivity Sensor Input Wiring
Sensor 1
Sensor 2
pH/ORP
DIS
1
2
IN–
3
IN+
4
5
6
7
8
+5V
9
–5V
10
11
12
18
2 Wire 2 Wire 3 Wire 4 Wire
Loop Pwrd
COM(–)
+24V +24V
XMTR–
XMTR– XMTR+ XMTR+ XMTR+
1 1
1
2 2
2
3 3
3
4 4
4
5 5
5
6 6
6
7 7
7
8 8
8
9 9
9
10 10
10
11 11
11
12 12
12
13 13
13
14 14
14
15 15
15
16 16
16
17 17
17
18 18
18
TB1 TB3 TB2
TEMP– WHT
TEMP+ GRN
RCV BLACK
SHIELD
XMT RED
TB1 (for Sensor 1) or
TB2 (for optional Sensor 2)
1
2
3
4
5
6
7
8
24V(-)
9
+24V
10
XMTR–
11
12
TB1 (for Sensor 1) or
TB2 (for optional Sensor 2)
20
POWER
SWITCH
FUSE
R1
R2
R3
N N
N N
N N
R4
N N
N N
N N
R5
TB5
R6
N
L
TB7
TB4 TB6
Conductivity
Electrode
GRN WHT RED BLK
High Pressure
General Purpose
(wiring is typical of all
three sensor options)
TEMP– WHT
TEMP+ GRN
SHIELD
RCV BLACK
XMT RED
Conductivity
Electrode