Electronics and Signal Processing | Teledyne Trace Oxygen Analyzer

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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Teledyne Trace Oxygen Analyzer Electronics and Signal Processing, Electronic Component Location Inside the Model 3000TA-XL

Contents

Trace Oxygen Analyzer Teledyne Analytical Instruments Model 3000TA-XL-EU Copyright 1999 Teledyne Analytical Instruments Iii Trace Oxygen Analyzer Specific Model Information Ground Protective Earth Teledyne Analytical Instruments Operational Theory Trace Oxygen Analyzer Table of Contents IntroductionInstallation Operation Maintenance Appendix Vii Trace Oxygen Analyzer Appendix Combustible GAS Usage Warning Viii Typical Applications Main Features of the AnalyzerOverview Trace Oxygen Analyzer Introduction Model Designations Introduction Model 3000TA-XL-EU Front Panel Operator Interface Model 3000TA-XL Front Panel Introduction Model 3000TA-XL-EU Rear Panel Equipment Interface Analog Outputs Remote Probe RS-232 PortNetwork I/O Trace Oxygen Analyzer Operational Theory Operational Theory IntroductionMicro-Fuel Cell Sensor Principles of Operation Operational Theory Model 3000TA-XL-EU Anatomy of a Micro-Fuel Cell Electrochemical Reactions + 2H 2O + 4e → 4OH Calibration Characteristics Effect of Pressure Characteristic Input/Output Curve for a Micro-Fuel Cell Sample System TOP Flow Diagram-Sample Under Pressure Standard Model Electronics and Signal Processing Electronic Component Location Inside the Model 3000TA-XL Block 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 Connections Gas Connections Rear Panel of the Model 3000TA-XL 2.2 50-Pin Equipment Interface Connector PrimaryInputPowerElectrical Connections Equipment Interface Connector Pin Arrangement Pin Function Pin Contact Remote Calibration Connections Range ID Relay Connections 2.3 RS-232 Port FET Series Resistance Command Description Parameter Setting Installing the Micro-Fuel Cell Testing the System Removing the Micro-Fuel Cell Trace Oxygen Analyzer Operation Auto Ranging on Using the Data Entry and Function Buttons Operation Model 3000TA-XL-EU System Function Analyze System Operation Model 3000TA-XL-EU Setting up an Auto-Cal Password Protection Entering the Password Installing or Changing the Password System Self-Diagnostic Test Logout Version Screen Air Calibration Calibration of the AnalyzerSpan Gas Calibration Zero Cal Auto Mode Zeroing Manual Mode Zeroing Cell Failure Auto Mode Spanning Operation Model 3000TA-XL-EU Span Cal Manual Mode Spanning Switching of Sample Streams Span Failure Alarms Function Special Notes on Hydrogen Gas Stream AL-1 AL-2 Choose Alarm Range Function Setting the Analog Output Ranges Fixed Range Analysis Signal Output Analyze Function Range Voltage Current mA MED Trace Oxygen Analyzer Maintenance Routine MaintenanceCell Replacement Storing and Handling Replacement Cells Maintenance Model 3000TA-XL-EU When to Replace a Cell Removing the Micro-Fuel Cell Removing the Micro-Fuel Cell Warranty Fuse Replacement Removing Fuse Block from Housing Maintenance Model 3000TA-XL-EU System Self Diagnostic TestMajor Internal Components Cleaning Rear-Panel Screws Troubleshooting Solution Specifications Operating Temperature 5-35 C Appendix Recommended 2-Year Spare Parts List Drawing List 19-inch Relay Rack Panel Mount 3000XL Series Analyzers Conversions Page Material Safety Data Sheet Section IV Fire and Explosion Hazard Data Protective measures during cell replacement Exposure Section Viii Control Measures Read completely before beginning the procedure