Teledyne BDS-3960 operating instructions Stability, Maintenance

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Operational Theory

BDS 3960

 

 

 

 

 

 

hydrogen, it reads 100% lower. For example, when the float ball in the flowmeter is at 0.5 SLPM, the actual flow rate of hydrogen is about 1 SLPM.

The BDS oxygen sensor can tolerate exposure to acidic gases. Up to 0.2% CO2 has no effect to ppb level oxygen measurement.

2.2.7 Stability

The BDS sensor is essentially drift free. Typically a BDS sensor requires no re-calibration over an entire year period. However, there may be some intrusion to the zero during the maintenance. See next section for details.

2.2.8 Maintenance

The only maintenance required on the BDS sensor is to replenish distilled or de-ionized water every three to four months. It is not necessary to take the analyzer out of service while adding water to the sensor but caution should be taken to avoid spilling water on the PC boards or other area inside the analyzer.

Figure 2.5: Adding DI Water to the BDS Sensor

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 ViiMaintenance AppendixIndex Teledyne Analytical Instruments ViiiList of Figures BDS-3960 Front PanelVacuum Degassing for the BDS Oxygen Sensor List of Tables Combustible GAS Usage XiiMain Features of the Analyzer IntroductionOverview Typical ApplicationsFront Panel Operator Interface BDS-3960 Front Panel Rear Panel Equipment Interface Analog OutputsRemote Probe Range ID ContactsModel BDS 3960 Rear Panel Operational Theory IntroductionBDS Sensor Principles of OperationOxygen Analyzer Operational Theory Cross Section of the BDS Oxygen Sensor Gas Flow Rate BDS sensor output at different gas flow rateTemperature effect Recovery from High Level Oxygen ExposureGas 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 Installation Unpacking the AnalyzerMounting 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 DeviceCleaning TroubleshootingSymptoms Possible causes and Solutions 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 Material Safety Data Sheet Section I Product IdentificationSection II Physical and Chemical Data Section III -Physical Hazards Section IV Health Hazard DataSection VI Handling Information Alarms IndexOxygen Analyzer Index MsdsZero