Hach 3700 Series Basic User Manual page 13

Figure 8 Attach the digital gateway to a wall
Connect the sensor with a module
Electrocution hazard. Always remove power to the instrument before making electrical connections.
Electrocution hazard. High voltage wiring for the controller is connected 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.
As an alternative, connect the sensor to an sc200 controller with an sc200 conductivity module. Refer
to the illustrated steps that follow and
D A N G E R
D A N G E R
Table 2.
English 13