ICON ProCon D700 Series, Operating Manual

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Instrument Connection
EC1, EC2, EC3, EC4 Electrical conductivity/resistivity wiring
T+T Temperature connection
INPUT pH/ORP/lon measure
REF pH/ORP/lon reference
S+S Membrane dissolved oxygen, FCL
CE RE WE Constant voltage Residual Chlorine/chlorine Dioxide/ozone
I1 G I2 Output current
I3 G I4 Input current
RLY3, RLY2, RLY1 Three Relays
G, L, N G-ground wire, L-live, N-neutral
V + V- RX TX RS-232 communication output
V + V- A, B Digital input channel 1
V + V- A B Digital input channel 2
A1 B1 RS-485 communication output
+ - DC power supply