In-Situ RDO PRO-X Process Optical Dissolved Oxygen Sensor Manual - Manual (Page 14)

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Controller Requirements and Connections
The RDO PRO-X Probe may be connected to a controller or logger for communication
via the following options.
l
Analog (4-20 mA) provides a configurable 4-20 mA current loop output
l
SDI-12
l
RS485 Modbus
l
RS232 to Modbus
Wiring Overview
Refer to diagrams on the following pages. Trim and insulate unused wires. The
shielded wire should be connected to a chassis ground or earth ground.
The inside of the controller must be kept free of moisture and
humidity. Condensed moisture can migrate through the wiring and
cause the probe to fail. Therefore, desiccant should be installed in
the controller and be replaced on a regular basis.