16
17
1
2
3
4
5
6
7
8
9
10
11
12
TB2
TB1
FUSE
POWER
SWITCH
POWER
SWITCH
1
2
3
4
5
6
7
8
9
10
11
12
R1
R2
R3
N
N
N
N
L
TB3
TB4
TB5
TB6
TB7
+
pH
–
TB1
ECOND CCOND
pH/ORP
w/BNC
pH/ORP
DIS
1
XMT+ XMT
USE
FOR
INPUT
SIGNAL
2
XMT–
3
X-SHLD
4
+5V
5
RCV–
6
RCV+
7
RCV
IN+
8
–5V
9
TEMP– TEMP– TEMP– TEMP–
10
TEMP+ TEMP+ TEMP+ TEMP+
11
IN–
12
SHIELD SHIELD SHIELD
TB2
FUNCTION
1
4-20 OUT–
2
4-20 OUT+
3
SHIELD
4
DIG IN 2–
5
DIG IN 2+
6
+9 VDC
7
SHIELD
8
DIG IN 1–
9
DIG IN 1+
10
+9 VDC
11
SHIELD
12
BNC
TB1
1
2
3
4
5
6
7
8
9
10
11
12
Conductivity
Electrode
TEMP– WHT
TEMP+ GRN
RCV BLK
SHIELD
XMT RED
SAFETY COVER LABEL
R-SHLD
High Pressure
Conductivity
Electrode
GRN WHT RED BLK
Condensate
Electrode
(wiring is typical of all three sensor options)
Figure 8 Contacting Conductivity Sensor Input Wiring
1 2 3 4 5 6 7 8 9 10 11 12
TB2
TB1
FUSE
POWER SW
IT
CH
POWER SW
IT
CH
1 2 3 4 5 6 7 8 9 10 11 12
R1
R2
R3
N N N
N
L
DIGIT
AL
INPUT
& OPTIONAL
ANALOG OUTPUT
TERMINAL
BLOCK
POWER SUPPL
Y
EAR
TH GROUND
TERMINAL
BLOCK
RELA
Y OUTPUT
TERMINAL
BLOCK
FUSE
AC POWER TERMINAL
BLOCK
SENSOR INPUT TERMINAL BLOCK
OPTIONAL
NON-AMPLIFIED
PH/ORP
INPUT
TERMINAL
BLOCK
MAIN CONTROLLER BOARD
RIBBON CABLE
TB
3
TB
4
TB
5
TB
6
TB7
+
pH
–
USB
CONNECT
OR
Figure 7 Identification of Parts