In-Situ TROLL 9500 Operators Manual - Manual (Page 5)

0095110 rev. 007 01/09 TROLL 9500 Operator’s Manual
CONTENTS
V
Calibration ........................................................................................ 67
Overview .................................................................................. 67
Nominal vs. Stable .......................................................... 68
Calibration Solutions ................................................................ 68
Recommended Calibration Frequency .................................... 68
pH Quick Cal ............................................................................ 68
Traditional pH Calibration Procedure ....................................... 68
Recommended Calibration Order for pH and ORP .................. 68
Resetting Default Coefficients .................................................. 70
Sensor Slope and Offset .......................................................... 70
Units and Calculated Measurements ................................................ 70
Usage Recommendations and Cautions .......................................... 70
Sensor Care and Handling .............................................................. 71
Sensor Removal ...................................................................... 71
Maintenance/Inspection/Cleaning ............................................ 71
Replacing the Filling Solution .................................................. 71
Replacing the Junction ............................................................. 71
Storage ................................................................................... 71
References ....................................................................................... 71
12 CONDUCTIVITY ..............................................72
What Is Conductivity? ....................................................................... 72
Why Measure Conductivity? .................................................... 72
How is Conductivity Measured? ............................................... 72
The Conductivity Sensors ................................................................ 72
Sensor Installation ............................................................................ 73
Calibration ......................................................................................... 73
Overview .................................................................................. 73
Nominal vs. Stable .......................................................... 73
Calibration Solutions (Primary Standards) ............................... 73
Calibrating with Other Solutions ...................................... 73
Recommended Calibration Frequency .................................... 73
Conductivity Quick Cal ............................................................. 74
Traditional Conductivity Calibration Procedure ........................ 74
Using a Conductivity Meter as a Secondary Standard ............ 76
Entering a Cell Constant Manually ........................................... 76
Units and Calculated Measurements ................................................ 76
Basic Unit: AC ................................................................. 76
Specific Conductance (SC) ............................................. 76
Total Dissolved Solids (TDS) ........................................... 77
Resistivity ....................................................................... 77
Salinity ............................................................................. 77
Usage Recommendations and Cautions .......................................... 77
Conductivity and Temperature ................................................. 77
Sensor Care and Handling ............................................................... 77
Sensor Removal ...................................................................... 77
Maintenance/Inspection/Cleaning ............................................ 77
Storage .................................................................................... 77
References ....................................................................................... 77
13 DISSOLVED OXYGEN ..................................... 78
What is Dissolved Oxygen? .............................................................. 78
Why Measure Dissolved Oxygen? .......................................... 78
Polarographic Measurement of Dissolved Oxygen ........................... 79
The Polarographic Dissolved Oxygen Sensor .................................. 79
Theory of Operation ................................................................. 79
Sensor Conditioning ................................................................. 79
Sensor Installation ............................................................................ 79
Fill the Membrane Module ...................................................... 79
Install the Sensor in the MP TROLL 9500 ................................ 80
Condition a Newly Installed Sensor ........................................ 80
Calibration ........................................................................................ 80
Overview .................................................................................. 80
Nominal vs. Stable .......................................................... 81
Calibration Solutions & Equipment .......................................... 81
Recommended Calibration Frequency .................................... 81
Dissolved Oxygen Calibration Tips .......................................... 81
Dissolved Oxygen Quick Cal ................................................... 81
Traditional Dissolved Oxygen Calibration Procedure ............... 81
Usage Recommendations and Cautions .......................................... 86
Attaching the Stirrer ........................................................ 86
Starting the Stirrer ........................................................... 86
Sensor Care and Handling ............................................................... 87
Sensor Removal ...................................................................... 87
Maintenance/Inspection ........................................................... 87
Replacing the Membrane Module ............................................ 87
Sensor Life ............................................................................... 87
References ....................................................................................... 88
Optical Measurement of Dissolved Oxygen ...................................... 89
The RDO Optical Dissolved Oxygen Sensor .................................... 89
The RDO Sensor and Salinity ......................................... 89
Unpack the RDO Cable connect Sensor ................................. 89
Unpack the RDO Direct connect Sensor ................................. 90
Installing the RDO Sensor CAP ............................................... 90
INstalling the RDO Sensor ....................................................... 90
Calibration ......................................................................................... 91
Overview .................................................................................. 91
Nominal vs. Stable .......................................................... 91
Calibration Solutions ................................................................ 92
Recommended Calibration Frequency .................................... 92
Traditional 2-Point Calibration .................................................. 92
Oxygen Saturation Point .......................................................... 92
Zero Oxygen Point ................................................................... 93
Barometric Pressure Options .......................................... 93
Finalize the Calibration ............................................................ 94
Status indicators: ............................................................ 94
Clean-up .......................................................................... 95
Units and Calculated Measurements ................................................ 95
Usage Recommendations and Cautions .......................................... 95
Salinity ............................................................................. 95
Sensor Care and Handling ............................................................... 95
Biofouling ................................................................................. 95
Cleaning the Sensor Cap ................................................ 96
Cleaning the Optical Window (Perform only if changing the
cap) ........................................................................ 96
Cleaning the Sensor Body .............................................. 96
Storage ............................................................................ 96
Replacing the Sensor Cap .............................................. 96