Teledyne Trace Oxygen Analyzer, 3000TA-XL-EU Electronics and Signal Processing

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2 Operational Theory		Model 3000TA-XL-EU

2.4Electronics and Signal Processing

The Model 3000TA-XL Trace Oxygen Analyzer uses an 8031 micro- controller with 32 kB of RAM and 128 kB of ROM to control all signal processing, input/output, and display functions for the analyzer. System power is supplied from a universal power supply module designed to be compatible with any international power source. Figure 2-6 shows the location of the power supply and the main electronic PC boards.

The signal processing electronics including the microprocessor, analog to digital, and digital to analog converters are located on the motherboard at the bottom of the case. The preamplifier board is mounted on top of the motherboard as shown in the figure. These boards are accessible after re- moving the back panel. Figure 2-7 is a block diagram of the Analyzer electronics.

Figure 2-6: Electronic Component Location Inside the Model 3000TA-XL

2-8	Teledyne Analytical Instruments

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Contents Trace Oxygen Analyzer Teledyne Analytical InstrumentsModel 3000TA-XL-EU Copyright 1999 Teledyne Analytical InstrumentsIii Trace Oxygen Analyzer Specific Model InformationGround Protective Earth Teledyne Analytical InstrumentsOperational Theory Trace Oxygen Analyzer Table of Contents IntroductionInstallation OperationMaintenance AppendixVii Trace Oxygen Analyzer AppendixCombustible GAS Usage Warning ViiiTypical Applications Main Features of the AnalyzerOverview Trace Oxygen Analyzer IntroductionModel Designations Introduction Model 3000TA-XL-EUFront Panel Operator Interface Model 3000TA-XL Front PanelIntroduction Model 3000TA-XL-EU Rear Panel Equipment Interface Analog OutputsRemote Probe RS-232 PortNetwork I/O Trace Oxygen Analyzer Operational Theory Operational Theory IntroductionMicro-Fuel Cell Sensor Principles of OperationOperational Theory Model 3000TA-XL-EU Anatomy of a Micro-Fuel CellElectrochemical Reactions + 2H 2O + 4e → 4OHCalibration Characteristics Effect of PressureCharacteristic Input/Output Curve for a Micro-Fuel Cell Sample SystemTOP Flow Diagram-Sample Under Pressure Standard Model Electronics and Signal Processing Electronic Component Location Inside the Model 3000TA-XLBlock Diagram of the Model 3000TA-XL Electronics Operational Theory Model 3000TA-XL-EU Unpacking the Analyzer Trace Oxygen Analyzer InstallationMounting the Analyzer Installation Model 3000TA-XL-EU Rear Panel ConnectionsGas Connections Rear Panel of the Model 3000TA-XL2.2 50-Pin Equipment Interface Connector PrimaryInputPowerElectrical Connections Equipment Interface Connector Pin Arrangement Pin FunctionPin Contact Remote Calibration Connections Range ID Relay Connections 2.3 RS-232 Port FET Series ResistanceCommand Description Parameter SettingInstalling the Micro-Fuel Cell Testing the SystemRemoving the Micro-Fuel Cell Trace Oxygen Analyzer Operation Auto Ranging onUsing the Data Entry and Function Buttons Operation Model 3000TA-XL-EUSystem Function Analyze SystemOperation Model 3000TA-XL-EU Setting up an Auto-Cal Password Protection Entering the Password Installing or Changing the Password System Self-Diagnostic Test LogoutVersion Screen Air Calibration Calibration of the AnalyzerSpan Gas Calibration Zero CalAuto Mode Zeroing Manual Mode ZeroingCell Failure Auto Mode Spanning Operation Model 3000TA-XL-EU Span CalManual Mode Spanning Switching of Sample Streams Span FailureAlarms Function Special Notes on Hydrogen Gas StreamAL-1 AL-2 Choose Alarm Range Function Setting the Analog Output Ranges Fixed Range AnalysisSignal Output Analyze FunctionRange Voltage Current mA MEDTrace Oxygen Analyzer Maintenance Routine MaintenanceCell Replacement Storing and Handling Replacement CellsMaintenance Model 3000TA-XL-EU When to Replace a Cell Removing the Micro-Fuel CellRemoving the Micro-Fuel Cell Warranty Fuse Replacement Removing Fuse Block from HousingMaintenance Model 3000TA-XL-EU System Self Diagnostic TestMajor Internal Components Cleaning Rear-Panel ScrewsTroubleshooting SolutionSpecifications Operating Temperature 5-35 C AppendixRecommended 2-Year Spare Parts List Drawing List 19-inch Relay Rack Panel Mount3000XL Series Analyzers Conversions Page Material Safety Data Sheet Section IV Fire and Explosion Hazard Data Protective measures during cell replacement ExposureSection Viii Control Measures Read completely before beginning the procedure

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