Teledyne 9700 instruction manual Alarm and/or Control Circuitry, Output Signal Current

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Flue Gas Analysis System

Installation 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.1.3 Alarm and/or Control Circuitry

Models having a -1 or -2 as part of their model number are equipped with single (-1) or double (-2) alarm and/or control circuits.

The SPDT form "C" (NC/C/NO) contacts of the relay (or relays) are available on the terminal strip within the oxygen analyzer. To properly use the switch that the relay contacts represent, the customer must determine when the relay (or relays) is energized (above or below the setpoint). The appropriate terminal strip connections are identified on the interconnection diagram (see Figure 6).

For those not familiar with relay terminology, the terms normally open (NO) and normally closed (NC) refer to the relay contact configura- tion when the relay is in a de-energized condition.

The load current per relay must be limited to 3 Amperes non-induc-

tive.

3.1.4 Output Signal Current

Instruments which include the designation "I" as part of their model number are equipped with an E-to-I converter to provide a DC milliampere (mA) output signal as well as a DC voltage signal.

Aseparate 1/4 ampere slow-blow fuse, located on the analyzer control panel, protects this circuitry.

The range for current output is:

4–20 mA dc

Suitable for devices with 0–1500 Ohms impedance (resistive).

The appropriate terminal strip connections are identified on the interconnection diagram (see Figure 6).

TELEDYNE BROWN ENGINEERING

3-3

Analytical Instruments

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Contents Model Flue Gas Analysis System Important Notice WarrantyTable of Contents Maintenance & Troubleshooting Flue Gas Analysis System IntroductionOverview 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 Recessed Secondary Controls Meter TrimAnalog Output 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 Procedure Routine Operational CalibrationStartup of Combustibles Analyzer 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 TrapTroubleshooting PumpGeneral 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 General Maintenance for CC-2B Series Pumps MaintenanceRepair 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