- 4 -
3.2
Back Panel
The back panel consists of four different connectors that can be used with
removable terminal blocks (included):
+
4 - 2
0
m
A
12
19
3
11
18
2
10
17
1
9
16
8
15
7
14
6
13
5
4
NC
NC
NC
NC
-
4
- 2
0
m
A
RE
L
A
Y 1 -
NO
R
E
LA
Y
1 -
POL
E
RE
L
A
Y 1 -
NC
Pt 1
0
0 -
GN
D
RE
L
A
Y
2
-
NO
P
t 10
0 - I
N
RE
L
A
Y 2 -
PO
LE
Pt 1
0
0 -
SE
NSE
GR
O
U
N
D
RE
L
A
Y 2 -
NC
N
L
IQ
U
ID G
N
D
L
J2
J1
J3
pH/ORP
WARNING
D
B
C
A
A. 3 pin connector (for power supply)
B. 9 pin connector (for relays)
C. 7 pin connector (for temperature sensor)
D. BNC connector (for pH or ORP electrode)
A.
1. L- Live
2. N- Neutral
3. E- Earth Ground
C.
13. Pt 100- SENSE
14. Pt 100- IN
15. Pt 100-GND
16. NC
17. NC
18. NC
19. NC
B.
4. Liquid GND
5. RELAY 2- NC
6. RELAY 2- POLE
7. RELAY 2- NO
8. RELAY 1- NC
9. RELAY 1- POLE
10. RELAY 1- NO
11. – 4 to 20 mA
12. +4 to 20 mA
D.
BNC for pH/ORP
