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Teledyne 6750 operating instructions 8:Relationship Between TIC and pH, Oxidation

Models: 6750

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Figure 2-8: Relationship Between TIC and pH

Total Organic Carbon Analyzer	Theory of Operation

be reduced to approximately 2.0 to 3.0. If the sample pH is not properly reduced as described in Figure 2-8, increase the normalcy of the acid reagent until the water exiting the sparger drain is between 2.0 and 3.0.

Figure 2-8: Relationship Between TIC and pH

2.4.3 Oxidation

The UV reactor and persulfate reagent provide oxidation of the carbon to CO2. The UV reactor consists of the following:

•Mounting enclosure with viewing window

•Borosilicate reactor body

•Heater/Temperature sensor

•UV Lamp

•Miscellaneous fittings and clamps

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Teledyne 6750 operating instructions 8:Relationship Between TIC and pH, Oxidation

Contents

Total Organic Carbon Analyzer DANGEROPERATING INSTRUCTIONS FOR ModelImportant Notice WarrantyModel Teledyne Analytical InstrumentsTeledyne Analytical Instruments Specific Model InformationInstrument Serial Number: _______________________ Total Organic Carbon AnalyzerNo Symbol Safety MessagesThis manual provides information designed to guide you through the installation, calibration operation and maintenance of your new analyzer. Please read this manual and keep it available Table of Contents Teledyne Analytical Instruments Setup and OperationMaintenance Total Organic Carbon AnalyzerTeledyne Analytical Instruments ModelAppendix IndexList of Figures Figure 5-6:DC Power Supply Module List of Tables Table 5-1 TroubleshootingTable 4-1:Preparation of Standards TOC/TIC DANGER COMBUSTIBLE GAS USAGEIntroduction 1.1 Main Features of the Analyzer1.2Options 1.3Typical Applications1.4 Intended Use of the Analyzer 1.5 Operator Interface Introduction ModelTeledyne Analytical Instruments Theory of Operation 2.1 Overview2.2 Background Figure 2-2:TOC – True Method Figure 2-1:NPOC or TOC – Direct MethodIn conclusion Model Figure 2-3 TOC Measurement BasicsFigure 2-4:UV/Persulfate Method Theory of Operation2.3 The UV/Heated Persulfate Method of Analysis Theory of Operation ModelTeledyne Analytical Instruments 2.4.1 Sample Handling 2.4 Subsystems Principles of OperationFigure 2-6:Sample Handling for TOC -Direct 2.4.2.2GAS PHASE SAMPLE HANDLING Figure 2-7:Sample Handling TOC-True2.4.2Inorganic Carbon Removal/Analysis TOC analysis in a continuous, on-lineTOC analyzer2.4.3 Oxidation Figure 2-8:Relationship Between TIC and pHFigure 5-10shows UV oxidation methodology Figure 2-9:Oxidation ReactionsFigure 2-10:Model 6750 NDIR Unit 2.4.4 NDIR CO2 Gas Detection•Benchmark/Auto-Validation •Auto-Calibration 2.4.5.3AUTO-CLEANING 2.4.5.1BENCHMARK/AUTO-VALIDATION2.4.5.2AUTO-CALIBRATION Theory of Operation ModelTeledyne Analytical Instruments Installation 3.1Unpacking the Analyzer3.2 Mounting the Analyzer Model Figure 3-1:Analyzer DimensionsFigure 3-2:Required Door Clearance Installation3.3 Electrical Connections 3.3.1 Power ConnectionFigure 3-4:Electrical Connections to the Model 3.3.2 Analog Outputs3.4.1 Liquid Connections 3.3.3 Alarm Connections3.4 Gas/liquid Connections 3.3.4RS-232Serial Connection•Carrier Gas •Vent 3.4.2 Gas Connections•Reagents •Drain s The gas connections include •Sample Gas3.5 Checking the System Gas Carrier ConnectionsNDIR Vent gas exhaust Installation ModelTeledyne Analytical Instruments 4.1Analyzer Startup Setup and OperationI. water container Figure4-1:Drain Connections4.2 Menus Figure 4-2:Gas Liquid Separator D. I. Filling4.2.1 Run Mode 4.2.2 Parameter Menu 4.2.3 Alarm Settings 4.2.4 Stream Sequencer 4.2.5 D/DBPR 4.3Detailed Calibration Procedures Total Organic Carbon Analyzer Table 4-1:Preparation of Standards TOC/TIC5. Acid Preparation b.Select TOC The following screen appears Figure 4-3:The RUN Screen 4.4 Operation4.6 Historical Data 4.5 ShutdownUsing the Scroll Bar, select the data to be viewed 5.1 Compupter-aidedTesting MaintenanceTable 5-1:Troubleshooting 5.2 Troubleshooting5.3.1NDIR Gas Calibration 5.3 Module ServiceFigure 5-1:Disconnecting Tubing from Reactor Figure 5-2:IR Calibration Adapter P/N ST20026IR Calibration 5.3.2 NDIR Service Figure 5-3 Installing Calibration Adapter3.Remove vent tube from NDIR Assembly Figure 5-4:Removing the NDIR Unit P/N ST36000To Replace the NDIR Unit 1.Turn off power 2.Remove inlet tube from NDIR AssemblyTeledyne Analytical Instruments MaintenanceSlide out and remove Source Assembly Total Organic Carbon AnalyzerTeledyne Analytical Instruments Maintenance• Remove IR Cell Assembly ModelTo Reassemble Install IR Cell• Install Source Assembly end piece Detector Assembly leftUse alternate tightening sequence •Install insulation. Replace assembly as beforesqueeze nuts RecommendFigure 5-5:Removing the Master Interface Board 5.3.3 Master Interface Board P/N ST13042-1Figure 5-6:DC Power Supply Module 5.3.4 D. C. Power SupplyFigure 5-7 Replacing CE Computer 5.3.5 CE Computer P/N5.3.6 UV Lamp P/N ST20009 Figure 5-8:UV Lamp ReplacementFigure 5-9:Removing the UV Reactor Assembly 5.3.7UV Reactor Assembly P/N ST20003-15.3.8UV Power Supply 5.3.9 Mass Flow Controller P/N ST18001A Figure 5-10:Removing the UV Power Supply5.3.10 Metering Valve P/N ST16050 Figure 5-11:Mass Flow Controller5.3.11 Sparger P/N ST20025 Figure 5-12:Metering Valve1.Turn machine OFF 2.Turn carrier gas Air/O2 OFF Figure 5-13:SpargerTo clean the sparger 2.Reinstall sparger in reverse order1. Turn main power OFF 5.3.12 PumpsTeledyne Analytical Instruments Maintenance5. Disconnect Pump Motor Connector ModelFigure 5-14:Removing the Pump 4.Hold tubing with thumb 5.3.134-20mA Adjustment Procedure Figure 5-15:Pump Head Tubing Replacement5.3.13.2SETTING OF 4-20 MA OUTPUT 5.3.13.1SETTING 100 MV CONTROL VOLTAGEA.1Specifications AppendixPerformance Facility requirements Sample requirementsImage A.2 Parts ListingPart # DescriptionST15083 ST100006-1 Teledyne Analytical Instruments AC Board AssemblyAppendix ModelST200003-1 A.3.3 Option A.3 OptionsA.3.1 Option A.3.2 OptionA.3.7 Option A.3.4 OptionA.3.5 Option A.3.6 OptionSince COD & BOD analysis may vary with seasonal influences or other particular conditions, correlations for those conditions would be used at those times Teledyne Analytical Instruments A.4 AS-BUILTDrawingsTotal Organic Carbon Analyzer AppendixAppendix ModelTeledyne Analytical Instruments Index enclosure, pump mounting screw, UV/Heated Persulfate Oxidation