Teledyne 3020T Sample System, Characteristic Input/Output Curve for a Micro-Fuel Cell

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Trace Oxygen Analyzer

Operational Theory 2

Figure 2-3. Characteristic Input/Output Curve for a Micro-Fuel Cell

2.3Sample System

The sample system delivers gases to the Micro-Fuel Cell sensor from the analyzer gas panel inlets. Depending on the mode of operation either sample or calibration gas is delivered.

The Model 3020T sample system is designed and fabricated to ensure that the oxygen concentration of the gas is not altered as it travels through the sample system. The sample encounters almost no dead space. This mini- mizes residual gas pockets that can interfere with trace analysis.

The sample system for the standard instrument incorporates ¼ inch tube fittings for sample inlet and outlet connections at the rear panel. For metric system installations, 6 mm adapters are supplied with each instrument to be used if needed. The sample or calibration gas flowing through the system is monitored by a flowmeter downstream from the cell.

Teledyne Analytical Instruments

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Contents Teledyne Analytical Instruments Model 3020TCopyright 1999 Teledyne Analytical Instruments Model 3020T3020T-I Trace Oxygen AnalyzerIii Specific Model InformationInstallation Table of Contents IntroductionOperational Theory Operation MaintenanceAppendix Typical Applications Main Features of the AnalyzerTrace Oxygen Analyzer Introduction OverviewModel 3020T Model DesignationsTrace Oxygen Analyzer Introduction Operator Interface Model 3020T Controls, Indicators, and ConnectorsESCAPE/ENTER Switch 1 UP/DOWN SwitchPWD Displays Electrical Connector PanelRecognizing Difference Between LCD Equipment InterfaceRemote Valves RS-232 PortRemote Sensor Gas Connector PanelNetwork I/O Optional Micro-Fuel Cell Sensor Operational Theory IntroductionPrinciples of Operation Anatomy of a Micro-Fuel Cell Operational Theory+ 2H 2O + 4e → 4OH Electrochemical ReactionsEffect of Pressure Calibration CharacteristicsSample System Characteristic Input/Output Curve for a Micro-Fuel CellSpan Zero Sample Electronics and Signal ProcessingBlock Diagram of the Model 3020T Electronics Temperature Control Unpacking the Analyzer Trace Oxygen Analyzer InstallationMounting the Analyzer Front View of the Model 3020T Simplified Required Front Door Clearance Electrical ConnectionsFuse Installation Primary Input PowerAnalog Outputs Analog Output Connections ExamplesRange Voltage Current mA Alarm RelaysTypes of Relay Contacts Digital Remote Cal InputsZero RS-232 Sig RS-232 Pin Purpose Range ID RelaysNetwork I/O 8 RS-232 PortParameter Setting Command DescriptionRemote Sensor and Solenoid Valves Remote Solenoid Return Connector Pinouts Installing the Micro-Fuel CellGas 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 Trace Oxygen Analyzer Operation AUTO-CALFunction PWD Password FunctionEntering the Password Only one password can be definedInstalling or Changing the Password Version Screen Logout FunctionZero and Span Functions Trace Oxygen Analyzer Operation SELF-TESTFunctionZero Cal Auto Mode ZeroingManual Mode Zeroing Cell Failure Auto Mode SpanningSpan Cal Manual Mode Spanning Installation Alarms FunctionAL-1 AL-2 Choose Alarm Range Function Setting the Analog Output RangesFixed Range Analysis Standby Function Contrast FunctionAnalysis Mode Operation Routine Maintenance Trace Oxygen Analyzer MaintenanceMajor Internal Components Major Internal Components Cell ReplacementWhen to Replace a Cell Storing and Handling Replacement CellsRemoving 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 Removing Fuse Cap and Fuse from Holder System Self Diagnostic TestAnalog PowerPreamp Maintenance Trace Oxygen Analyzer Appendix SpecificationsOperating Temperature 0-50 C Qty Part Number Description Recommended 2-Year Spare Parts ListDrawing List Series Analyzers Restrictor KIT Conversions