User Guide

- 4 -
3.2 Back Panel
The back panel consists of four different connectors that can be used with
removable terminal blocks (included):
+
4 - 20 m
A
12
19
3
11
18
210
17
19
16
8
15
7
14
6
13
54
NC NC NC NC
-
4 - 20 mA
RELAY 1 - NO
RELAY 1 - POLE
RELAY 1 - NC
Pt 100 - GND
RELAY 2 - NO
Pt 100 - IN
RELAY 2 - POLE
Pt 100 - SENSE
GROUND RELAY 2 - NC N
LIQUID GND
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