TROLL 9500 Operator's Manual - Geotech Environmental Equipment

ContentsCalibration ........................................................................................ 67Overview................................................................................... 67Nominal vs. Stable........................................................... 68Calibration Solutions................................................................. 68Recommended Calibration Frequency..................................... 68pH Quick Cal............................................................................ 68Traditional pH Calibration Procedure........................................ 68Recommended Calibration Order for pH and ORP.................. 68Resetting Default Coefficients.................................................. 70Sensor Slope and Offset.......................................................... 70Units and Calculated Measurements................................................ 70Usage Recommendations and Cautions........................................... 70Sensor Care and Handling ............................................................... 71Sensor Removal....................................................................... 71Maintenance/Inspection/Cleaning............................................ 71Replacing the Filling Solution .................................................. 71Replacing the Junction............................................................. 71Storage .................................................................................... 71References........................................................................................ 7112 Conductivity...............................................72What Is Conductivity?........................................................................ 72Why Measure Conductivity?..................................................... 72How is Conductivity Measured?............................................... 72The Conductivity Sensors ................................................................ 72Sensor Installation............................................................................. 73Calibration......................................................................................... 73Overview................................................................................... 73Nominal vs. Stable........................................................... 73Calibration Solutions (Primary Standards)............................... 73Calibrating with Other Solutions...................................... 73Recommended Calibration Frequency..................................... 73Conductivity Quick Cal............................................................. 74Traditional Conductivity Calibration Procedure......................... 74Using a Conductivity Meter as a Secondary Standard............. 76Entering a Cell Constant Manually........................................... 76Units and Calculated Measurements................................................ 76Basic Unit: AC.................................................................. 76Specific Conductance (SC).............................................. 76Total Dissolved Solids (TDS)........................................... 77Resistivity ........................................................................ 77Salinity............................................................................. 77Usage Recommendations and Cautions........................................... 77Conductivity and Temperature.................................................. 77Sensor Care and Handling................................................................ 77Sensor Removal....................................................................... 77Maintenance/Inspection/Cleaning............................................ 77Storage..................................................................................... 77References........................................................................................ 7713 Dissolved Oxygen...................................... 78What is Dissolved Oxygen?.............................................................. 78Why Measure Dissolved Oxygen? .......................................... 78Polarographic Measurement of Dissolved Oxygen........................... 79The Polarographic Dissolved Oxygen Sensor................................... 79Theory of Operation.................................................................. 79Sensor Conditioning................................................................. 79Sensor Installation............................................................................. 79Fill the Membrane Module....................................................... 79Install the Sensor in the MP TROLL 9500................................ 80Condition a Newly Installed Sensor......................................... 80Calibration........................................................................................ 80Overview................................................................................... 80Nominal vs. Stable........................................................... 81Calibration Solutions & Equipment........................................... 81Recommended Calibration Frequency..................................... 81Dissolved Oxygen Calibration Tips........................................... 81Dissolved Oxygen Quick Cal.................................................... 81Traditional Dissolved Oxygen Calibration Procedure............... 81Usage Recommendations and Cautions........................................... 86Attaching the Stirrer......................................................... 86Starting the Stirrer............................................................ 86Sensor Care and Handling................................................................ 87Sensor Removal....................................................................... 87Maintenance/Inspection............................................................ 87Replacing the Membrane Module............................................. 87Sensor Life............................................................................... 87References........................................................................................ 88Optical Measurement of Dissolved Oxygen...................................... 89The RDO Optical Dissolved Oxygen Sensor..................................... 89The RDO Sensor and Salinity.......................................... 89Unpack the RDO Cable connect Sensor.................................. 89Unpack the RDO Direct connect Sensor.................................. 90Installing the RDO Sensor CAP................................................ 90INstalling the RDO Sensor....................................................... 90Calibration......................................................................................... 91Overview................................................................................... 91Nominal vs. Stable........................................................... 91Calibration Solutions................................................................. 92Recommended Calibration Frequency..................................... 92Traditional 2-Point Calibration.................................................. 92Oxygen Saturation Point........................................................... 92Zero Oxygen Point.................................................................... 93Barometric Pressure Options........................................... 93Finalize the Calibration............................................................. 94Status indicators: ............................................................ 94Clean-up.......................................................................... 95Units and Calculated Measurements................................................ 95Usage Recommendations and Cautions........................................... 95Salinity............................................................................. 95Sensor Care and Handling................................................................ 95Biofouling.................................................................................. 95Cleaning the Sensor Cap................................................. 96Cleaning the Optical Window (Perform only if changing thecap)......................................................................... 96Cleaning the Sensor Body............................................... 96Storage............................................................................ 96Replacing the Sensor Cap............................................... 96TROLL 9500 Operator’s Manualv0095110 rev. 007 01/09