Hach POLYMETRON 9125 - 3 Electric Connections; Electronic Board Lay-Out in the 9125 Transmitter Enclosure

Transmitter 9125 – Conductivity / resistivity measurement
Page 17
3. Electric connections
Electronic board lay-out in the 9125 transmitter
enclosure
________________________________________________________________________
Fig. 3.1 Electronic board lay-out
1. Terminal block 4-20 mA
2. CPU board
3. RS485 board (option)
4. Relay board (option)
5. Choice between an inductive (all 4 switches on position I) or a 2 electrode
(Kohlraush) probe (all 4 switches on position K)
6. Programmed EEPROM
7. Conductivity module
8. Power supply board
9. Program update connector
7

1

2

3

4

5

6

8

9
