Teledyne 6750 operating instructions Theory of Operation, Overview, Background

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Total Organic Carbon Analyzer	Theory of Operation

Theory of Operation

2.1 Overview

The Model 6750 Analyzer uses the UV/Heated Persulfate method of analysis and is well-suited for many applications involving accurate TOC analysis. The basic analyzer is configured for maximum utility using an advanced Microsoft™ Windows-based CE computer with touch screen. The analyzer is suitable for both general purpose and/or hazardous area classifications, if properly configured with required safety equipment.

2.2 Background

TOC analysis is the primary screening tool and control parameter for all water based applications but there are some discrepancies or misunderstanding in just what TOC is comprised of.

Many manufacturers claim TOC analysis capability without disclosing the limitations of their methods. Some treat all “TOC analyzers” as a commodity, with no distinguishing characteristics among them. Analytical results reported by the user can therefore be questionable, unless the TOC method is matched to the analytical requirement.

The following discussion is intended to provide the user adequate information in order to allow intelligent cost/performance trade-offs and select the appropriate TOC method for each application. The Model 6750 TOC Analyzer performs the following analyses on the SAME sample:

•	TC:	Total Carbon
•	NPOC:	Non-Purgeable Organic Carbon
•	TIC:	Total Inorganic Carbon

•POC (VOC): Purgeable Organic Carbon or Volatile Organic Carbon

•TOC-True : Total Organic Carbon

Teledyne Analytical Instruments

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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 Total Organic Carbon Analyzer Introduction Main Features of the AnalyzerIntroduction 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 Analyzer Startup Setup and OperationTotal Organic Carbon Analyzer Setup and Operation 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 Total Organic Carbon Analyzer Maintenance MaintenanceCompupter-aided Testing 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 Total Organic Carbon Analyzer Appendix 1SpecificationsAppendix 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