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Teledyne 3000TA-XL-EU, Trace Oxygen Analyzer 2-8, 2.4 Electronics and Signal Processing

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2-8

2 Operational Theory Model 3000TA-XL-EU

Teledyne Analytical Instruments

2.4 Electronics 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

Contents

Main i Trace Oxygen Analyzer OPERATING INSTRUCTIONS FOR Model 3000TA-XL-EU Trace Oxygen Analyzer DANGER ii Model 3000TA-XL-EU Copyright 1999 Teledyne Analytical Instruments Page iv v vi Page viii COMBUSTIBLE GAS USAGE WARNING DANGER 1-1 Introduction 1.1 Overview 1.2 Typical Applications 1.3 Main Features of the Analyzer 1-2 1.4 Model Designations 1-3 1.5 Front Panel (Operator Interface) 1-4 1-5 1.6 Rear Panel (Equipment Interface) 1-6 2-1 Operational Theory 2.1 Introduction 2.2 Micro-Fuel Cell Sensor 2-2 2-3 2-4 2-5 2.3 Sample System 2-6 TOP RIGHT SI D E 2-7 2-8 2.4 Electronics and Signal Processing Page 2-10 3-1 Installation 3.1 Unpacking the Analyzer 3.2 Mounting the Analyzer 3-2 3.3 Rear Panel Connections 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3.4 Installing the Micro-Fuel Cell 3.5 Testing the System 3-12 4-1 Operation 4.1 Introduction 4-2 4.2 Using the Data Entry and Function Buttons 4-3 4.3 The System Function 4-4 4-5 4-6 4-7 4-8 4-9 4-10 4-11 4.4 Calibration of the Analyzer 4-12 4-13 4-14 4-15 4-16 4.4.3 Span Failure 4.5 Switching of Sample Streams 4-17 4.6 The Alarms Function 4-18 4-19 4.7 The Range Function 4-20 4-21 4.8 The Analyze Function 4.9 Signal Output 4-22 5-1 Maintenance 5.1 Routine Maintenance 5.2 Cell Replacement 5-2 5-3 5-4 5-5 5.3 Fuse Replacement 5-6 5.4 System Self Diagnostic Test 5.5 Major Internal Components Page 5-8 5.7 Troubleshooting Problem: Problem: A-1 Appendix A-1 Specifications A-2 A-3 A-2 Recommended 2-Year Spare Parts List Page A-5 3000XL SERIES ANALYZERS Page Page A-8 A-6 Material Safety Data Sheet Section III Physical/Chemical Characteristics Section I Product Identification Section II Hazardous Ingredients/Composition A-9 Trace Oxygen Analyzer Appendix Section VI Health Hazard Data Section IV Fire and Explosion Hazard Data Section V Reactivity Data A-10 Section VII Precautions for Safe Handling and Use Protective measures during cell replacement: A-11 Trace Oxygen Analyzer Appendix Section VIII Control Measures Section IX Disposal Section X References A-12 A7 - Installling and Replacing a new Insta-Trace Micro-fuel Cell Read completely before beginning the procedure