Thermo Fisher Scientific Alpha CON 100 - Manual (Page 7)

4
2.2 The Back Panel
The back panel consists of two connectors. The first one is a 4-
way screw terminal and the second is a 12-way screw terminal.
Refer to the label on top of the unit for diagram.
The connection for the 4-way screw terminals are (from the left
to right):
1. PT 100 connection
2. PT 100 connection
3. Conductivity input (Inner core)
4. Conductivity input (Outer shield)
The connections for the 12-way screw terminals are (from left to
right),
5. High Set Relay deactivated position
6. High Set Relay center pole
7. High Set Relay activated position
8. Low Set Relay deactivated position
9. Low Set Relay center pole
10. Low Set Relay activated position
11. 4-20 mA - ve connection (for transmitter models only)
12. 4-20 mA + ve connection (for transmitter models only)
13. Protective earth
14. Protective earth
15. Neutral
16. Live