Teledyne 6750 operating instructions Sample Handling TOC-True

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Total Organic Carbon Analyzer	Theory of Operation

Figure 2-7: Sample Handling TOC-True

2.4.2.2GAS PHASE SAMPLE HANDLING

Referencing Figure 3-5 and “As Built” drawings in the Appendix, a carrier gas of (99.8%) pure oxygen or CO2 and hydrocarbon-free air is required. Erroneous TOC analysis will occur if the carrier gas has these impurities, since both CO2 and Hydrocarbon gases will contribute a higher TOC value to the analysis than is actually present in the sample.

An Oxygen Generator (P/N ST200025) is available from Teledyne that separates oxygen from the ambient air. It is a pressure swing absorption PSA device requiring only electricity only to operate. Also available from Teledyne is an Instrument Air Purifier (P/N ST200019). This device can supply the oxygen demands of the instrument using facility instrument air.

Facility carrier gas is introduced to the analyzer, regulated at 15± 2 psi, and then controlled by an internal mass flow controller (MFC-1) to precisely control the flow rate of the carrier.

Note: Precise carrier gas flow control is mandatory for accurate

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Contents Teledyne Analytical Instruments ModelCopyright 2005 Teledyne Instruments/ Analytical Instruments ModelTotal Organic Carbon Analyzer Specific Model InformationSafety Messages Total Organic Carbon Analyzer Table of Contents Maintenance Setup and OperationIndex Teledyne Analytical Instruments AppendixModel 6750 TOC Analyzer Front door removed List of FiguresDC Power Supply Module List of Tables Combustible GAS Usage Introduction Main Features of the AnalyzerTotal Organic Carbon Analyzer Introduction Typical Applications OptionsIntended Use of the Analyzer Introduction ModelModel 6750 TOC Analyzer Front door removed Operator InterfaceIntroduction Model Teledyne Analytical Instruments Overview Theory of OperationBackground Total Organic Carbon Analyzer Theory of OperationNpoc or TOC Direct Method Theory of Operation ModelConclusion TOC Measurement Basics UV/Heated Persulfate Method of Analysis Comparison of TOC Measurement Technologies Sample Handling Subsystems Principles of OperationSample Handling for TOC -Direct Sample Handling TOC-True Inorganic Carbon Removal/Analysis TOC analysis in a continuous, on-line TOC analyzerOxidation Relationship Between TIC and pHOxidation Reactions 10 Model 6750 Ndir Unit Ndir CO2 Gas DetectionElectronic Signal Processing, Display and Control BENCHMARK/AUTO-VALIDATION Theory of Operation Model Teledyne Analytical Instruments Total Organic Carbon Analyzer Installation InstallationUnpacking the Analyzer Mounting the AnalyzerAnalyzer Dimensions Installation ModelElectrical Connections Power ConnectionElectrical Connections to the Model Analog OutputsGas/liquid Connections Alarm Connections4 RS-232 Serial Connection Liquid ConnectionsGas Connections Gas and Liquid Connections to the AnalyzerGas Carrier Connections Checking the SystemInstallation Model Teledyne Analytical Instruments Total Organic Carbon Analyzer Setup and Operation Setup and OperationAnalyzer Startup Drain Connections Setup and Operation ModelMenus Run ModeParameter Menu Alarm Settings Stream Sequencer 5 D/DBPR Detailed Calibration Procedures Ethylene Glycol 100 mg/Liter 1000 mg/LiterMethanol EthanolPreparation of Phosphoric Acid Solution Total Organic Carbon Analyzer Setup and Operation RUN Screen OperationHistorical Data ShutdownSetup and Operation Model Compupter-aided Testing MaintenanceTotal Organic Carbon Analyzer Maintenance Maintenance Model TroubleshootingNdir Gas Calibration Module ServiceIR Calibration Ndir Service Installing Calibration AdapterRemoving the Ndir Unit P/N ST36000 Total Organic Carbon Analyzer Maintenance Maintenance Model To Reassemble Use alternate tightening sequence Removing the Master Interface Board Master Interface Board P/N ST13042-1DC Power Supply Module 4 D. C. Power SupplyReplacing CE Computer CE Computer P/NUV Lamp P/N ST20009 UV Lamp ReplacementRemoving the UV Reactor Assembly UV Reactor Assembly P/N ST20003-1UV Power Supply Mass Flow Controller P/N ST18001A 10 Removing the UV Power SupplyMetering Valve P/N ST16050 11 Mass Flow ControllerSparger P/N ST20025 12 Metering Valve13 Sparger Pumps Maintenance Model 14 Removing the Pump Maintenance Model System Diagnostics 13 4-20 mA Adjustment ProcedureSetting 100 MV Control Voltage Appendix 1SpecificationsTotal Organic Carbon Analyzer Appendix Sample requirements Appendix ModelDescription Image Parts ListingAppendix Model Total Organic Carbon Analyzer Appendix Appendix Model Total Organic Carbon Analyzer Appendix Auto CAL OptionDbpr Option True Dual Range Option not an electronic scalingAppendix Model AS-BUILT Drawings Appendix Model Teledyne Analytical Instruments Total Organic Carbon Analyzer Index IndexModbus Index ModelPump mounting screw Index Model