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Teledyne 3020T 4-18 , 4.11 The CONTRAST Function, 4.12 The STANDBY Function

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4 Operation Model 3020T

4-18 Teledyne Analytical Instruments

output continue to read the true value of the oxygen concen-

tration regardless of the analog output range.

4.11 The CONTRAST Function

If you cannot read anything on the display after first powering up:

1. Observe LED readout.

a. If LED meter reads all eights and dots, go to step 3.

b. If LED meter displays anything else, go to step 2.

2. Disconnect power to the Analyzer and reconnect again. LED

meter should now read all eights and dots.

4.12 The STANDBY Function

In STANDBY, the analyzer’s internal circuits are powered, but there

are no displays or outputs from the analyzer.

WARNING: THE POWER CABLE MUST BE UNPLUGGED TO

FULLY DISCONNECT POWER FROM THE INSTRU-

MENT. WHEN THE ACCESS DOOR IS OPEN AND

THE POWER CABLE IS CONNECTED, EXTRA

CARE IS REQUIRED TO AVOID CONTACT WITH

LIVE ELECTRICAL CIRCUITS.

CAUTION: If you disconnect the primary power source from

the analyzer, then on re-energizing, you will be

required to choose to keep the configuration you

previously programmed into your instrument in the

Setup Mode, or it will reset to factory defaults.

Use this function whenever you want to power down without loosing

all of the configuration you programmed into your instrument in the Setup

Mode.

Contrast Function is

DISABLED

(Refer to Section 1.6)

Contents

Main i Teledyne Analytical Instruments OPERATING INSTRUCTIONS FOR Model 3020T Trace Oxygen Analyzer DANGER ii Model 3020T Teledyne Analytical Instruments Copyright 1999 Teledyne Analytical Instruments iii iv Model 3020T v Analysis Mode ........................................................ Page Introduction 1-2 1 Introduction Model 3020T 1.4 Model Designations Page 1-4 1 Introduction Model 3020T Analyze WARNING: THE POWER CABLE MUST BE DISCONNECTED TO FULLY REMOVE POWER FROM THE INSTRUMENT. 1-5 Trace Oxygen Analyzer Introduction 1 1.6 Recognizing Difference Between LCD & VFD 1.7 Equipment Interface CAUTION: The power cable must be disconnected to fully remove power from the instrument. Page 1-7 Trace Oxygen Analyzer Introduction 1 Page 2-1 Trace Oxygen Analyzer Operational Theory 2 Operational Theory 2.1 Introduction 2.2 Micro-Fuel Cell Sensor 2-2 2-3 Trace Oxygen Analyzer Operational Theory 2 2-4 Page 2-6 2 Operational Theory Model 3020T 2.4 Electronics and Signal Processing Page 2-8 2.5 Temperature Control 3-1 Installation 3.1 Unpacking the Analyzer 3.2 Mounting the Analyzer Page Page 3-4 3-5 3-6 3-7 3 Installation Model 3020T Zero Span Zero 3-8 3-9 3-10 3-11 3.4 Installing the Micro-Fuel Cell 3-12 3.5 Gas Connections 3-13 3-14 3.6 Testing the System 4-1 Operation 4.1 Introduction 4.2 Using the Controls 4-2 4-3 4-4 4-5 4.3 The AUTO-CAL Function ON 4.4 The PWD (Password) Function 4-6 4-7 4-8 4.5 The LOGOUT Function 4.6 The VERSION Screen 4-9 4.7 The SELF-TEST Function 4.8 The ZERO and SPAN Functions 4-10 4-11 4-12 4-13 4-14 4.9 The ALARMS Function 4-15 4-16 4.10 The RANGE Function 4-17 4-18 4.11 The CONTRAST Function 4.12 The STANDBY Function 4-19 4.13 The Analysis Mode Page 5-1 Maintenance 5.1 Routine Maintenance WARNING: SEE WARNINGS ON TITLE PAGE OF THIS MANUAL. 5.2 Major Internal Components Page 5-3 5-4 Page 5-6 5-7 5.4 Fuse Replacement 5-8 5.5 System Self Diagnostic Test 5-9 Page A-1 Appendix A-1 Specifications A-2 Appendix Model 3020T A-3 A-2 Recommended 2-Year Spare Parts List Page A-5 3000 SERIES ANALYZERS A-4 A-6 Appendix Model 3020T A-7