Teledyne BDS-3960 operating instructions Application notes

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Appendix

BDS 3960

 

 

 

A-5 Application notes

Pressure and flow recommendations:

3960 series analyzers require reasonably regulated sample pressures. While the 3960 analyzers are not sensitive to variations of incoming pressure (provided they are properly vented to atmospheric pressure), the pressure must be maintained so as to provide a useable flow rate through 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 3960 series analyzer is one which can be measured on the flowmeter. This is basically 0.5 - 1.0 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 3960 series analyzers are optimized to function at atmospheric pressure.

Bypass:

To improve the system response, a bypass can be added to increase the sample flow rate to the analyzer by a factor of ten. A by- pass provides a sample flow path around the analyzer of 2 - 18 SCFH. typically.

Conversons:

 

 

1 PSI

=

2.04 INCHES OF MERCURY (in. Hg.)

1 SCFH

=

0.476 SLPM

Note: The MSDS on this material is available upon request through the Teledyne Environmental, Health and Safety Coordinator. Contact at (626) 934-1592

Teledyne Analytical Instruments

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Contents Oxygen Analyzer Teledyne Analytical InstrumentsBDS Copyright 2002 Teledyne Analytical InstrumentsSpecific Model Information IiiSafety Messages Oxygen Analyzer Table of Contents Operation ViiIndex Teledyne Analytical Instruments MaintenanceAppendix ViiiList of Figures BDS-3960 Front PanelVacuum Degassing for the BDS Oxygen Sensor List of Tables Combustible GAS Usage XiiOverview Main Features of the AnalyzerIntroduction Typical ApplicationsFront Panel Operator Interface BDS-3960 Front Panel Remote Probe Rear Panel Equipment InterfaceAnalog Outputs Range ID ContactsModel BDS 3960 Rear Panel BDS Sensor Operational TheoryIntroduction Principles of OperationOxygen Analyzer Operational Theory Cross Section of the BDS Oxygen Sensor Gas Flow Rate BDS sensor output at different gas flow rateRecovery from High Level Oxygen Exposure Temperature effectGas Pressure Background Gas Compatibility Typical Purge-down Curve After Air SaturationMaintenance StabilitySample System Electronics and Signal Processing Flow DiagramOxygen Analyzer Operational Theory BDS 3960 Electronics Block Diagram Page Unpacking the Analyzer InstallationMounting the Analyzer Oxygen Analyzer Installation Model BDS 3960 Front PanelRear Panel Connections Gas ConnectionsElectrical Connections Equipment Interface Connector Pin Arrangement Threshold Alarm Pin FunctionSystem Alarm Pin ContactCal Contact Installation Electrolyte Refill of BDS Sensor Testing the System Adding Electrolyte to the BDS SensorPowering Up the System Operation Auto Ranging onOxygen Analyzer Maintenance Analyzer applicationSystem Screen Communication Information and Calibration ParametersSetting Software Parameters Filter, Gas Factor, Tmp. Coeff Gas Factor Parameter Selection BoxTemperature Coefficient Parameter Default Values Calibration of the Analyzer Zero CalSpan Cal Alarms Function Maintenance Setting the Analog Output Ranges Range FunctionRange Options List Box Signal Output Fixed Range AnalysisSwitching The Program Back To Front Oxygen Analyzer Maintenance Maintenance Routine Maintenance Adding Water to the BDS SensorFuse Replacement Adding Water into the BDS sensorBattery Backup Replacement Removing Fuse Block from HousingReinstalling Application software to PPC Click startProgramsexplorer Click showMy DeviceSymptoms Possible causes and Solutions CleaningTroubleshooting Major Internal ComponentsCauses and solution keys Vacuum Degassing for the BDS Oxygen Sensor Oxygen Analyzer Maintenance Teledyne Analytical Instruments Specifications AppendixOperating Temperature 5-40 C Oxygen Analyzer AppendixRecommended 2-Year Spare Parts List Qty Part Number DescriptionDrawing List 19-inch Relay Rack Panel MountApplication notes Section I Product Identification Material Safety Data SheetSection II Physical and Chemical Data Section III -Physical Hazards Section IV Health Hazard DataSection VI Handling Information Alarms IndexOxygen Analyzer Index MsdsZero