Cell Replacement, Major Internal Components | Teledyne 3020T

5 Maintenance

Model 3020T

Figure 5-1: Major Internal Components

To swing open the cover panel, remove all screws.

5.3Cell Replacement

The Micro-Fuel Cell is a sealed electrochemical transducer with no electrolyte to change or electrodes to clean. When the cell reaches the end of its useful life, it is replaced. The spent fuel cell should be discarded in accor- dance with to all applicable safety and environmental regulations. This section describes fuel cell care as well as when and how to replace it.

The Class L-2C Micro-Fuel Cell is used in the standard Model 3020T. If any other cell is supplied with your instrument, check the front of this manual for any addenda applying to your special model.

5-2	Teledyne Analytical Instruments

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Teledyne 3020T operating instructions Cell Replacement, Major Internal Components

Contents

Model 3020T Teledyne Analytical Instruments Model 3020T Copyright 1999 Teledyne Analytical Instruments Specific Model Information Trace Oxygen AnalyzerIii 3020T-I Installation Table of Contents IntroductionOperational Theory Maintenance Operation Appendix Overview Main Features of the AnalyzerTrace Oxygen Analyzer Introduction Typical Applications Model Designations Model 3020T Model 3020T Controls, Indicators, and Connectors Trace Oxygen Analyzer Introduction Operator Interface ESCAPE/ENTER Switch 1 UP/DOWN SwitchPWD Equipment Interface Electrical Connector PanelRecognizing Difference Between LCD Displays RS-232 Port Remote Valves Remote Sensor Gas Connector PanelNetwork I/O Optional Micro-Fuel Cell Sensor Operational Theory IntroductionPrinciples of Operation Operational Theory 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 Electronics and Signal Processing Span Zero Sample Block Diagram of the Model 3020T Electronics Temperature Control Unpacking the Analyzer Trace Oxygen Analyzer InstallationMounting the Analyzer Front View of the Model 3020T Simplified Electrical Connections Required Front Door Clearance Fuse Installation Primary Input PowerAnalog Outputs Examples Analog Output Connections Alarm Relays Range Voltage Current mA Digital Remote Cal Inputs Types of Relay Contacts Zero 8 RS-232 Port Range ID RelaysNetwork I/O RS-232 Sig RS-232 Pin Purpose Parameter Setting Command DescriptionRemote Sensor and Solenoid Valves Installing the Micro-Fuel Cell Remote Solenoid Return Connector Pinouts Gas Connections Gas Connector Panel Testing the System Trace Oxygen Analyzer Operation Using the ControlsAuto Ranging on Setup Mode Analysis ModeMode/Function Selection Trace Oxygen Analyzer Enter Data EntryEscape PWD Password Function Trace Oxygen Analyzer Operation AUTO-CALFunction Only one password can be defined Entering the Password Installing or Changing the Password Logout Function Version Screen Trace Oxygen Analyzer Operation SELF-TESTFunction Zero and Span Functions Auto Mode Zeroing Zero Cal Manual Mode Zeroing Cell Failure Auto Mode SpanningSpan Cal Manual Mode Spanning Alarms Function Installation AL-1 AL-2 Choose Alarm Setting the Analog Output Ranges Range Function Fixed Range Analysis Contrast Function Standby Function Analysis Mode Operation Routine Maintenance Trace Oxygen Analyzer MaintenanceMajor Internal Components Cell Replacement Major Internal Components Storing and Handling Replacement Cells When to Replace a Cell Removing the Micro-Fuel Cell Exploded View of Cell Block and Micro-Fuel Cell Installing a New Micro-Fuel Cell Cell Warranty Fuse ReplacementL-2C cell is not designed for applications where CO2 is a System Self Diagnostic Test Removing Fuse Cap and Fuse from Holder Analog PowerPreamp Maintenance Specifications Trace Oxygen Analyzer Appendix Operating Temperature 0-50 C Recommended 2-Year Spare Parts List Qty Part Number Description Drawing List Series Analyzers Restrictor KIT Conversions