Hach pHD sc Analog Differential pH/ORP Sensors Manuel D'utilisation page 8

3.2 Connect the sensor to the module
W A R N I N G
Potential Electrocution Hazard. Always disconnect power to
the instrument when making electrical connections.
W A R N I N G
Electrocution Hazard. High voltage wiring for the controller is
conducted behind the high voltage barrier in the controller enclosure.
The barrier must remain in place except when installing modules, or
when a qualified installation technician is wiring for power, relays or
analog and network cards.
N O T I C E
Potential Instrument Damage. Delicate internal electronic
components can be damaged by static electricity, resulting in
degraded performance or eventual failure.
To install the module and connect the sensor, refer to the
steps on page 9 and Table 2.
Note: If the sensor cable is not long enough to reach the controller, an interconnect
cable and junction box are required to extend the distance.
8 English
Connector
8-pin
2-pin
illustrated
Sensor shield wires – Connect all sensor ground/shield
wires to the controller enclosure grounding screws.
Table 2 pH and ORP differential sensor wiring
Pin no. Signal
1 Reference
2 Inner shield
3 –V supply
4
5
6 Temp +
7 Temp – /Circuit low
8
1
2
Sensor wire
Green
Clear
White
— —
— —
Yellow
Black
— —
Active Red
— —
Clear with
black band