Table of Contents
1.0
Introduction ................................................................................................................................ 4
1.1
System Description ................................................................................................................. 4
1.2
Serial Numbers ....................................................................................................................... 5
1.3
Unpack the Probe ................................................................................................................... 5
2.0
Calibrate the RDO PRO Probe ................................................................................................... 6
2.1
1-point Calibration ................................................................................................................... 6
2.1.1
Water-Saturated Air Calibration ....................................................................................... 6
2.2
2-point Calibration ................................................................................................................... 7
2.2.1
100% Calibration Point .................................................................................................... 7
2.2.2
0% Calibration Point ........................................................................................................ 7
3.0
Sensor Deployment .................................................................................................................... 8
4.0
Care and Maintenance ............................................................................................................... 9
4.1
Clean the RDO Cap ................................................................................................................ 9
4.1.1
Clean the Optical Window ................................................................................................ 9
4.2
Clean the Probe ...................................................................................................................... 9
4.3
RDO Cap Storage ................................................................................................................... 9
4.4
Replace the RDO Cap ............................................................................................................ 9
4.5
Maintaining Desiccant ........................................................................................................... 10
5.0
Controller Requirements and Connections ............................................................................... 11
5.1
Wiring Overview .................................................................................................................... 11
5.2
Analog (4-20 mA) 3-wire ....................................................................................................... 12
5.3
SDI-12 (3 wire) ...................................................................................................................... 13
5.4
Modbus Master with Built-in RS485 ...................................................................................... 14
5.5
Modbus Master with Built-in RS232 (Converter Required) .................................................... 15
5.5.1
Converter ....................................................................................................................... 15
5.5.2
Power Connections ........................................................................................................ 16
5.5.3
Communications ............................................................................................................ 16
5.5.4
Additional Information .................................................................................................... 16
6.0
Modbus Registers .................................................................................................................... 16
6.1
Common Registers ............................................................................................................... 16
6.2
Sensor Status Registers ....................................................................................................... 16
6.3
Device Specific Measurement Registers ............................................................................... 16
6.3.1
Dissolved Oxygen Concentration Equations .................................................................. 18
6.3.2
Dissolved Oxygen, % Saturation Equations ................................................................... 19
6.4
Calibration Registers ............................................................................................................. 20
6.5
Entering Calibration Registers .............................................................................................. 21
6.5.1
Calibration Calculations ................................................................................................. 22
7.0
Specifications ........................................................................................................................... 23
8.0
Accessories and Replacement Parts ........................................................................................ 24
9.0
Warranty and Service ............................................................................................................... 24
9.1
Warranty Provisions .............................................................................................................. 24
9.2
Obtain Repair Service ........................................................................................................... 24
10.0
Appendix A – Communication Device ....................................................................................... 25
10.1
Install and Open the Software ............................................................................................... 25
10.2
Connect the Probe to the Communication Device ................................................................. 25
11.0
Declaration of Conformity ......................................................................................................... 26
