Teledyne 3000TA-XL-EU, Trace Oxygen Analyzer operating instructions 3000XL Series Analyzers

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Trace Oxygen Analyzer

Appendix

 

 

 

 

 

 

 

 

 

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3000XL SERIES ANALYZERS

 

 

APPLICATION NOTES ON

 

PRESSURES AND FLOW RECOMMENDATIONS

3000 series analyzers require reasonably regulated sample pressures. Whilethe3000analyzersarenotsensitivetovariationsofincomingpressure (provided they are properly vented to atmospheric pressure) The pressure must be maintained as to provide a useable flow rate trough the analyzer. Any line attached to sample vent should be 1/4 or larger in diameter.

FLOW RATE RECOMMENDATIONS:

A usable flow rate for a 3000XL series analyzer is one which can be measured on the flowmeter. This is basically 0.5 - 2.0 SLPM . The optimum flow rate is 1 SLPM (mid scale). Note: response time is dependent on flow rate, a low flow rate will result in slow response to O2 changes in the sample stream. The span flow rate should be the approximately same as the sample flow rate.

CELL PRESSURE CONCERNS:

The sensors used in 3000XL series analyzers are optimized to function at atmospheric pressure. At pressures other than atmospheric the diffusion rate ofO2willbedifferentthanoptimumvalue.Higherpressureswillproducefaster O2 diffusion rates resulting in higher O2 reading and shorter cell life. To use a 3000XL series analyzer at a cell pressure other than atmospheric, the analyzer must be calibrated with a known calibration gas at the new cell pressure to adjust for the different diffusion rate. Cell pressures below 2/3 atmospheric are not recommended because they tend to cause excessive internal expansion whichmayresultinsealfailure.

For operation at cell pressures other than atmospheric care must be taken not to change the sample pressure rapidly or cell damage may occur. For cell pressures above atmospheric, caution must be exercised to avoid over pressuringthecellholder.

FLOWCONTROLVALVE:

All 3000XL series analyzers have a flow control device. This device is a needle valve, and serves two functions in the sample path. The first function is to limit the flow rate of the sample through the analyzer. The needle valve is chosen to operate over a specific range of pressures and provide a useable flow rate over that range.

The second function that the needle valve provides is a pressure drop. This device is selected to provide the only significant pressure drop in the samplepath.

Teledyne Analytical Instruments

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Contents Teledyne Analytical Instruments Trace Oxygen AnalyzerCopyright 1999 Teledyne Analytical Instruments Model 3000TA-XL-EUTrace Oxygen Analyzer Specific Model Information IiiProtective Earth Teledyne Analytical Instruments GroundOperation Trace Oxygen Analyzer Table of Contents IntroductionInstallation Operational TheoryAppendix MaintenanceTrace Oxygen Analyzer Appendix ViiViii Combustible GAS Usage WarningTrace Oxygen Analyzer Introduction Main Features of the AnalyzerOverview Typical ApplicationsIntroduction Model 3000TA-XL-EU Model DesignationsModel 3000TA-XL Front Panel Front Panel Operator InterfaceIntroduction Model 3000TA-XL-EU Analog Outputs Rear Panel Equipment InterfaceNetwork I/O RS-232 PortRemote Probe Principles of Operation Operational Theory IntroductionMicro-Fuel Cell Sensor Trace Oxygen Analyzer Operational TheoryAnatomy of a Micro-Fuel Cell Operational Theory Model 3000TA-XL-EU+ 2H 2O + 4e → 4OH Electrochemical ReactionsEffect of Pressure Calibration CharacteristicsSample System Characteristic Input/Output Curve for a Micro-Fuel CellTOP Flow Diagram-Sample Under Pressure Standard Model Electronic Component Location Inside the Model 3000TA-XL Electronics and Signal ProcessingBlock Diagram of the Model 3000TA-XL Electronics Operational Theory Model 3000TA-XL-EU Mounting the Analyzer Trace Oxygen Analyzer InstallationUnpacking the Analyzer Rear Panel Connections Installation Model 3000TA-XL-EURear Panel of the Model 3000TA-XL Gas ConnectionsElectrical Connections PrimaryInputPower2.2 50-Pin Equipment Interface Connector Pin Function Equipment Interface Connector Pin ArrangementPin Contact Remote Calibration Connections Range ID Relay Connections FET Series Resistance 2.3 RS-232 PortParameter Setting Command DescriptionTesting the System Installing the Micro-Fuel CellRemoving the Micro-Fuel Cell Auto Ranging on Trace Oxygen Analyzer OperationOperation Model 3000TA-XL-EU Using the Data Entry and Function ButtonsAnalyze System System FunctionOperation Model 3000TA-XL-EU Setting up an Auto-Cal Password Protection Entering the Password Installing or Changing the Password Logout System Self-Diagnostic TestVersion Screen Zero Cal Calibration of the AnalyzerSpan Gas Calibration Air CalibrationManual Mode Zeroing Auto Mode ZeroingCell Failure Operation Model 3000TA-XL-EU Span Cal Auto Mode SpanningManual Mode Spanning Span Failure Switching of Sample StreamsSpecial Notes on Hydrogen Gas Stream Alarms FunctionAL-1 AL-2 Choose Alarm Range Function Fixed Range Analysis Setting the Analog Output RangesAnalyze Function Signal OutputMED Range Voltage Current mAStoring and Handling Replacement Cells Routine MaintenanceCell Replacement Trace Oxygen Analyzer MaintenanceRemoving the Micro-Fuel Cell Maintenance Model 3000TA-XL-EU When to Replace a CellRemoving the Micro-Fuel Cell Warranty Removing Fuse Block from Housing Fuse ReplacementMajor Internal Components System Self Diagnostic TestMaintenance Model 3000TA-XL-EU Rear-Panel Screws CleaningSolution TroubleshootingSpecifications Appendix Operating Temperature 5-35 CRecommended 2-Year Spare Parts List 19-inch Relay Rack Panel Mount Drawing List3000XL Series Analyzers Conversions Page Material Safety Data Sheet Section IV Fire and Explosion Hazard Data Exposure Protective measures during cell replacementSection Viii Control Measures Read completely before beginning the procedure
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