Connect the sensor to the gateway
D A N G E R
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.
W A R N I N G
Potential Electrocution Hazard. Always disconnect power to the instrument when making electrical
connections.
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.
Pre-requisites: Make sure the sensor cable is routed through the sealing hub and then the lock ring
for the pH flow cell before doing this procedure. Refer to Install the sensor on page 5 for the
illustrated steps.
To connect the sensor to the gateway, refer to the illustrated steps and Table 1.
Table 1 pHD sensor wire connections
Connector Pin Signal Sensor wire
J4 WHT -5 VDC White
SHLD Solution ground Clear (2 wires)
BLK Temp – Black
YEL Temp + Yellow
GRN (TB1) 1 Reference Green
2 Reference —
RED (TB2) 1 Active/Measuring —
2 Active/Measuring Red
English 7
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