Teledyne 9700 instruction manual Span Gas, Analyzer Startup, Sample System Startup

Page 35

 

 

Flue Gas Analysis System

Operation 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.2.2Span Gas

It is recommended that the span gas have a concentration of 4.0–4.8% methane or other desired combustible gas with the balance being nitrogen.

Note: It is important that the dilution air flow is never turned off during operation or calibration. Combustibles without at least a 2 : 1 ratio of oxygen should never be allowed to flow past the sensor. If this occurs, a loss of sensitivity will result and the unit will require complete recalibration and possible sensor replacement.

Note: The range of the combustible monitor is 0–5% combustibles, however, it is actually operating, at a sensitivitv of 0–2.5% combus- tibles (methane equivalvent) due to the 1 : 1 dilution with air.

4. 3 System Startup

4.3.1Analyzer Startup

Refer to Sections 4.1 and 4.2 for startup procedures for the oxygen and combustibles analyzers, respectively.

4.3.2Sample System Startup

Start the pump by turning ON the oxygen analyzer RANGE switch. Then turn on the water by opening the shutoff valve inside the case. Water should be observed passing through the transparent plastic hoses. Water flow rate will be determined by the supply pressure. With 10 psig, flow rate will be approximately 1/4 gpm maximum pressure should be 100 psig. This will give a flow rate of about 11/2 gpm. Generally, the dirtier the sample, the more water required. However, a 1/4 gpm flow rate will nor- mally be adequate, and the pressure should be reduced accordingly.

After analyzer startup and calibration procedures have been accom- plished, make certain that the sample-calibration selector valve is in the proper position to draw in the sample (see the cautionary note in step (2) of Section 4.1.4, Initial Calibration and Equilibration, and step (5)).

TELEDYNE BROWN ENGINEERING

4-7

Analytical Instruments

Image 35
Contents Model Flue Gas Analysis System Important Notice WarrantyTable of Contents Maintenance & Troubleshooting Overview Flue Gas Analysis SystemIntroduction Sample Conditioning General InformationSample Conditioning Oxygen Analyzer Section Standard FeaturesOxygen Analyzer Section General Information Optional Features General Information Combustible Gas Analyzer Section Combustible Gas Analyzer SectionGeneral Information Compound LEL Response Factor Operating Controls and Indicators Analog Output Recessed Secondary ControlsMeter Trim Current MAX Load Output Impedance Oxygen Analyzer Theory of OperationTheory of Operation Combustible Analyzer Detector Flue Gas Analysis System Theory of Operation Electrical Connections InstallationPower Output Signal VoltageInterconnection Diagram Output Signal Current Alarm and/or Control CircuitryInstallation Meter Zeroing OperationStartup of Oxygen Analyzer PreliminaryInitial Calibration and Equilibration Flue Gas Analysis System Operational Calibration Startup of Combustibles Analyzer ProcedureRoutine Operational Calibration Operation Sample System Startup Span GasSystem Startup Analyzer StartupOperation Oxygen Cell Replacement Flue Gas Analysis System Maintenance & TroubleshootingMaintenance Routine MaintenanceCell Warranty Combustible Sensor Spray NozzleWater Strainer Filter Condensate TrapGeneral TroubleshootingPump Oxygen Analyzer .2.2.1 Inability to Calibrate Inability to Calibrate Combustible Analyzer SectionNo Alarm With High Gas Level Lamp Failure Appendix SpecificationsOxygen Analysis Section Appendix ModelModel 9700 System Standard Unit Only Recommended Spare Parts ListReference Drawings Response of Combustible Sensor to Various Gases Appendix Model Supporting Equipment for Flue Gas Analysis Systems Figure A-1 Typical Dry Probe Repair General Maintenance for CC-2B Series PumpsMaintenance Appendix Model Flue Gas Analysis System Figure A-3 Pump Assembly Flue Gas Analysis System Figure A-4 Replacing Flex-I-Liner Replacing the Liner in the Flex-I-Liner PumpFlue Gas Analysis System