Teledyne BDS-3960 Introduction

Oxygen Analyzer Introduction

Teledyne Analytical Instruments 13

Introduction

1.1 Overview

The Teledyne Analytical Instruments Model BDS 3960 Oxygen

Analyzer is a versatile instrument for detecting oxygen at the parts-per-

billion (ppb) level in a variety of gases. This manual covers the Model

BDS 3960 General Purpose flush-panel and/or rack-mount units only.

These units are for indoor use in a non-hazardous environment.

1.2 Typical Applications

A few typical applications of the Model BDS 3960 are:

• Monitoring inert gas blanketing

• Air separation and liquefaction

• Chemical reaction monitoring

• Semiconductor manufacturing

• Petrochemical process control

• Quality assurance

• Gas analysis certification.

1.3 Main Features of the Analyzer

The Model BDS 3960 Oxygen Analyzer is sophisticated yet simple

to use. The main features of the analyzer include:

• Pocket PC with Windows CE operating system used as a

controller for analyzer functions.

• High resolution, accurate readings of oxygen content from

low ppb levels through 100 ppm. Large, bright, meter

readout.

• New BDS Sensing technology, patent pending.

• Versatile analysis over a wide range of applications.

• Microprocessor based electronics: 8-bit CMOS

microprocessor with 32 kB RAM and 8 kB ROM for I/O

operations.

Contents

Main BDS 3960 Teledyne Analytical Instruments ii Copyright 2002 Teledyne Analytical Instruments Specific Model Information Safety Messages Page Table of Contents Page Page List of Figures Page List of Tables DANGER COMBUSTIBLE GAS USAGE WARNING Introduction 1.1 Overview 1.2 Typical Applications 1.3 Main Features of the Analyzer 1.4 Front Panel (Operator Interface) Page 1.5 Rear Panel (Equipment Interface) Page Operational Theory 2.1 Introduction 2.2 BDS Sensor 2.2.1 Principles of Operation Page Page 2.2.2 Gas Flow Rate 2.2.3 Gas Pressure 2.2.4 Temperature effect 2.2.5 Recovery from High Level Oxygen Exposure 2.2.6 Background Gas Compatibility 2.2.7 Stability 2.2.8 Maintenance 2.3 Sample System 2.4 Electronics and Signal Processing Page Page Page Installation 3.1 Unpacking the Analyzer 3.2 Mounting the Analyzer Page 3.3 Rear Panel Connections 3.3.1 Gas Connections 3.3.2 Electrical Connections 3.3.2.1 PRIMARY INPUT POWER 3.3.2.2 50-PIN EQUIPMENT INTERFACE CONNECTOR Page Page Page Page 3.4 Electrolyte Refill of BDS Sensor 3.5 Testing the System 3.6 Powering Up the System Operation 4.1 Introduction 4.2 The Analyzer application 4.3 The System Screen 4.3.1 Communication Information and Calibration Parameters 4.3.2 Setting Software Parameters: Filter, Gas Factor, Tmp. Coeff. 4.3.2.1 THE DIGITAL FILTER 4.3.2.2 The Gas Factor 4.3.2.3 T EMPERATURE C 4.3.2.4 S ET D 4.4 Calibration of the Analyzer 4.4.1 Zero Cal 4.4.1.1 Z ERO F 4.4.2 Span Cal 4.4.2.1 S PAN F 4.5 The Alarms Function Page 4.6 The Range Function 4.6.1 Setting the Analog Output Ranges Page 4.6.2 Fixed Range Analysis 4.8 Signal Output 4.9 Switching The Program Back To The Front Page Maintenance 5.1 Routine Maintenance 5.2 Adding Water to the BDS Sensor 5.3 Fuse Replacement 5.4 Battery Backup Replacement 5.5 Reinstalling Application software to PPC. 5.5 Major Internal Components 5.6 Cleaning 5.7 Troubleshooting Page Page Page Appendix A-1 Specifications Page A-2 Recommended 2-Year Spare Parts List Page A-5 Application notes Material Safety Data Sheet Teledyne Analytical Instruments 72 Section III -Physical Hazards Section IV - Health Hazard Data Oxygen Analyzer Appendix Teledyne Analytical Instruments 73 Section V - Emergency and First Aid Procedures Section VI - Handling Information Index Oxygen Analyzer Index Teledyne Analytical Instruments 75