Electric Connections; Electronic Board Lay-Out In The 9125 Transmitter Enclosure - Hach POLYMETRON 9125 Operator's Manual

Transmitter 9125 – Conductivity / resistivity measurement
3.

Electric connections

Electronic board lay-out in the 9125 transmitter
enclosure
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Fig. 3.1 Electronic board lay-out
2
1
5 6
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
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9
7
4
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