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Thermo Fisher Scientific Alpha TDS 200 User Manual

Page 8

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3.2 Back Panel
The back panel consists of three different connectors that can be used with removable
terminal blocks (included):

12 11 10 9 8 7 6 5 4

3 2 1

19 18 17 16 15 14 13


1. VAC live wire
2. VAC neutral wire
3. VAC protective ground wire

4. unused
5. Relay 2 deactivated position (normally closed)
6. Relay 2 center pole

7. Relay 2 activated position (normally open)
8. Relay 1 deactivated position (normally closed)
9. Relay 1 center pole
10. Relay 1 activated position (normally open)
11. 4-20 mA connection, negative
12. 4-20 mA connection, positive

13.

Pt 100 connection: sense (jumper to terminal 14 if using 2-wire RTD)

14. Pt 100 connection: input
15. Pt 100 connection: ground
16. TDS positive terminal
17. TDS negative terminal
18. unused
19. unused