Contents
MXD70 Dissolved Oxygen
Setup and Operating Guide
- 3 -
Contents
Preface ......................................................................................................................... 1
Contents ..................................................................................................................... 3
Dissolved Oxygen Input Card Specification ................................................. 5
Installation and Choice of Dissolved Oxygen Sensors .............................. 7
MXD73 – Panel Mount Termination Information ................................. 8
MXD75 – Surface Mount Termination Information .......................... 10
LTH 54D Extension Cable Connection Information .......................... 12
Temperature Sensor Connections ........................................................... 13
Dissolved Oxygen Input Channel Setup ..................................................... 14
Units .................................................................................................................... 15
Temperature Input Sensor ......................................................................... 17
Pressure Compensation .............................................................................. 18
Calibration .............................................................................................................. 24
Calibration Menu ........................................................................................... 26
Main Menu ........................................................................................................ 26
Calibration History ......................................................................................... 32
Sensor Condition ........................................................................................... 32
Front Screen Calibration Access ............................................................... 33
Calibration Reminder ................................................................................... 34
Resetting the User Calibration .................................................................. 36
Appendix A - DO Measurement ..................................................................... 38
Sensor Interface .............................................................................................. 38
Membrane Correction .................................................................................. 39
Oxygen Solubility ........................................................................................... 39
Partial Pressure of Oxygen (pO2) ............................................................. 40
Sensor Parameters ......................................................................................... 40
Appendix B - Temperature Data .................................................................... 41
Appendix C - Pressure Conversions .............................................................. 42
Appendix D - Instrument Configuration ..................................................... 44
Appendix E - Error Messages ........................................................................... 50
Fault Finding .......................................................................................................... 62
Guarantee and Service ....................................................................................... 64
Index ......................................................................................................................... 67
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