Manual

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Table of Contents
1 Optical RDO PRO-X Dissolved Oxygen Probe Specifications
5
2 Introduction
6
System Description 6
Serial Numbers 7
Unpack the Probe 7
3 Calibrate the RDO PRO-X Probe
9
1-Point Calibration 9
Water-Saturated Air 9
2-Point Calibration 10
100% and 0% Saturation 10
4 Probe Deployment
11
5 Care and Maintenance
12
Clean the RDO-X Sensor Cap 12
Clean the Optical Window 12
Clean the Probe 12
RDO-X Sensor Cap Storage 12
Replace the RDO-X Sensor Cap 12
Maintain Desiccant 13
6 Controller Requirements and Connections
14
Wiring Overview 14
Analog (4-20 mA) 3-wire 15
SDI-12 (3-wire) 16
Modbus Master with Built-in RS485 17
Modbus Master with Built-in RS232 (Converter Required) 18
Converter 19
Power Connections 19
Communications 19
7 Modbus Registers
20
Common Registers 20
Sensor Status Registers 20
Device Specific Registers 21
8 Dissolved Oxygen Equations
22
Dissolved Oxygen Concentration 22
Dissolved Oxygen, % Saturation 23
9 Calibration Registers
24
Live Salinity Value 24