product image) Owner's manual

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2.3 Connecting Peripherals
2.3.1 Connection Terminals
Remove Back Cover:
Remove the screws from the four corners at the back of the pH
Transmitter.
Remove the back cover. The connectors are exposed on the back
PCBA as shown in the Figure 1 below.
Connectors:
J202 – 9V DC power
J204 - pH electrode & Temperature probe connections (wiring has to
be done in the detachable connector:
1. Pin 1 : pH Sensor
2. Pin 2 : pH Reference
3. Pin 3 : No Connection
4. Pin 4 : No Connection
5. Temp I/P : Pt 100 Compensate
6. Temp Sens : Pt 100 Sense
7. Temp Gnd : Pt 100 GND
8. PMP : Potential Matching Pin
Figure 1: Outer Side of Back PCBA
J204
J202
Pin 1
Pin 2
Pin 3
Pin 4
Temp I/P
Temp Sens
Temp Gnd
PMP