Emerson NGA2000 TO2 instruction manual TO2 analyzer gives erratic and very in- sensitive readings

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Instruction Manual

748374-F March 2003

Model NGA2000 TO2

sensor is a partial pressure measuring device, an increase in sample pressure will cause an increase in reading. If the reading drops with increased flow, conduct the leak check outlined in the troubleshooting tip above.

The TO2 analyzer gives erratic and very in- sensitive readings.

Check to see that the electrolyte level is within the limits indicated on the reservoir. Add dis- tilled water as required. If the level is within lim- its, the electrolyte may have been contaminated. Refer to Section 4-3 on page 4-2 above for proper procedure to replace electro- lyte. If replacement of electrolyte does not im- prove the performance of the sensor, the sensor may have been damaged due to over- pressurization or poisoning. Sensor replace- ment may be required as described in Section 4-4 on page 4-2.

4-4

Maintenance and Troubleshooting

Rosemount Analytical Inc. A Division of Emerson Process Management

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Contents Model NGA2000 TO2 Essential Instructions Table of Contents Model NGA2000 TO2Material Safety Data Sheet Maintenance and TroubleshootingList of Illustrations List of TablesModel NGA2000 TO2 Preface Intended USE Statement DefinitionsSafety Summary Authorized PersonnelModel NGA2000 TO2 Model NGA2000 TO2 Documentation CompliancesGlossary of Terms Section Description and Specifications FeaturesOverview Typical ApplicationsTrace Oxygen Detector Technology Trace Oxygen Analyzer Module Top View Specifications GeneralSample PhysicalSection Installation AssemblyUnpacking LocationConnections PressureCalibration Gases Trace Oxygen Analyzer Outline and Mounting Dimensions GAS Overpressure Sample FlowTrace Oxygen Analyzer Front Panel Electrical ConnectionsModel NGA2000 TO2 Displays Run Mode DisplaySection Startup and Operation Basic Controls Menu Startup Procedure Quick Start FeatureGAS Scale Factor GSF CalibrationRoutine Operation Description Type Alarm IndicationTrace Oxygen Analyzer Module Alarms Model NGA2000 TO2 Refilling Sensor Section Maintenance and TroubleshootingOverview Qualified Personnel Electrolyte Replacement Sensor ReplacementWater Addition To add water FusesFlow Sensor Replacement TroubleshootingPrinted Circuit Boards Sensor DamageTO2 analyzer gives erratic and very in- sensitive readings Section Replacement Parts Configuration IdentifierReplacement Parts MatrixModel NGA2000 TO2 Customer Service Rosemount Analytical Inc Customer Service CenterSection Return of Material Return of MaterialModel NGA2000 TO2 NGA TO2 Analyzer Module Menus Section Appendix A. Menu StructureNGA TO2 Menu Structure Introduction Model NGA2000 TO2 Model NGA2000 TO2 Model NGA2000 TO2 Model NGA2000 TO2 Model NGA2000 TO2 Path Section Appendix B. User Interface HelpMenu Items Model NGA2000 TO2 Section Index Model NGA2000 TO2 Warranty Emerson Process Management Rosemount Analytical Inc