Emerson 3000 manual Cell General, Inner Probe Assembly

Page 38

Instruction Manual

Appendix A Rev. 3.6 July 1998

World Class 3000

d.Cell - General

The components which make up the cell are machined to close tolerances and assembled with care to provide accurate oxygen measurements. Any replacement requires attention to detail and care in assembly to provide good results.

Failure to follow the instructions in this manual could cause danger to personnel and equipment. Read and follow instructions in this manual carefully.

The oxygen probe includes an inner electrode for the cell assembly. It consists of a platinum pad and a platinum/inconel composite wire which produces the cell constant offset voltage described in the Nernst equation.

With this pad and wire, the constant will be between -10 and +15 mV. The cell constant is noted in the calibration data sheet supplied with each probe.

Every probe should be calibrated and checked after repair or replacement of cell, pad and wire, heater, and thermocouple, or after disassembly of the probe.

A-3 INNER PROBE ASSEMBLY

The inner probe assembly, Figure A-5,consists of six main parts:

b.A heater that is helically wrapped on a quartz support cylinder and insulated.

c.A chromel-alumel thermocouple which acts as the sensing element for the temperature controller. (Not visible in Figure A-5;located within ceramic support rod.)

d.A platinum screen pad which forms electrical contact with the inner electrode of the electrochemical cell. (Not visible in Figure A-5;located at end of ceramic support rod.) The pad is attached to an inconel wire which carries the signal to the terminal strip.

e.A V-strut assembly to give support to the inner probe assembly.

f.A tube to carry reference air to the cell.

Turn to Service and Normal Maintenance, for repair procedures for probe components.

HEATER

 

INSULATING

 

 

GASKET

REFERENCE

 

 

V-STRUT

 

AIR TUBE

 

 

CERAMIC

SUPPORT

ROD

a.Ceramic support rod with four holes running through the length. The holes serve as insulated paths for the cell signal wire and thermocouple wires.

27270015

Figure A-5. Inner Probe Assembly

A-4 Appendices

Rosemount Analytical Inc. A Division of Emerson Process Management

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Contents World Class Essential Instructions Summary Highlights of ChangesEffective October, 1995 Rev Effective June, 1996 RevEffective May, 1997 Rev PageSummary Effective February, 1998 Rev PageSummaryTable of Contents World ClassList of Illustrations Typical System PackagePreface DefinitionsWorld Class Overview Component Checklist of Typical System Package ContentsSection Description System Configuration FeaturesTypical System Installation Existing Electronics Heater Power SupplyProbe Head Wiring ProbeInstallation Section InstallationEither make necessary repairs or install Oxygen Analyzer ProbeProbe Installation Sheet 1 Probe Installation Sheet 2 Probe Installation Sheet 3 Probe Installation Sheet 4 Probe Installation Sheet 5 Service Required Orienting the Optional Vee DeflectorElectrical Installation of Heater Power Supply Heater Power Supply Installation Electrical ConnectionsSelection JM1 Fuses JM2 World Class Section Setup Electronics SetupModel 218A Electronics Setup G02 G04Heater Set Point Adjustment Model TC200 Veritrim Electronics SetupEprom Replacement Model 132 Digital Electronics Setup Main PCB Model 132 Eprom ReplacementSection Troubleshooting System TroubleshootingWorld Class Section Return of Material World Class Section Appendices World Class Oxygen Analyzer Probe General Figure A-2. Main Probe ComponentsTable A-1. Specifications for Oxygen Analyzing Equipment.1 Probe Tube Assembly Probe Assembly ExteriorCell and Flange Assembly Snubber Diffusion AssemblyInner Probe Assembly Cell GeneralProbe Junction BOX Cable AssemblyAbrasive Shield Assembly Probe OptionsView a Figure A-8. Ceramic Diffusion/Dust Seal Assembly Ceramic Diffusion AssemblyBypass Probe Options Probe Mounting Jacket OptionsFigure A-13. Bypass Probe Option Sheet 1 Figure A-13. Bypass Probe Option Sheet 2 Extended Temperature By-Pass Arrangements 2400 F 1300 C Group Code DescriptionTable A-2. Fault Finding Symptom Check Remedy Probe TroubleshootingProbe Faults OverviewWorld Class Figure A-14. Flowchart of Probe Related Problems, #1 Figure A-15. Flowchart of Probe Related Problems, #2 Cell Replacement Probe RecalibrationFigure A-16. Cell Wiring Connection General Element ReplacementOptional Ceramic Diffusion World Class Replacement of Contact Thermocouple Assembly Figure A-19. Probe Junction Box Mechanical ConnectionsContact Heater Screws Not Shown Thermocoupler World Class Figure A-22. Oxygen Analyzer Probe, Cross-Sectional View Figure A-23. High Temperature Corrosive Environment Kit Replacement Parts Figure A-10 4841B03G02 Stainless Steel Diffuser Assembly Appendix B, REV HPS 3000 Heater Power Supply Description Front SideTable B-1. Specifications for Heater Power Supply Theory of OperationHPS 3000 Troubleshooting Overview HPS 3000 TroubleshootingSymptom Figure B-4. HPS Troubleshooting Flowchart, #1Figure B-5. HPS Troubleshooting Flowchart, #2 Figure B-6. HPS Troubleshooting Flowchart, #3 Mother Board Replacement Fuse ReplacementTransformer Replacement Daughter Board Replacement Figure B-7. Heater Power Supply, Exploded View Table B-2. Replacement Parts for Heater Power Supply Part Number DescriptionWorld Class Section Index World Class Warranty World Class 3000 Probe Serial No Order No HPS
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3000 specifications

The Emerson 3000 is a cutting-edge control system designed to enhance the efficiency, reliability, and precision of industrial operations. Employed across various sectors such as oil and gas, pharmaceutical, food and beverage, and power generation, the Emerson 3000 has gained recognition for its robustness and versatility.

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In summary, the Emerson 3000 represents a fusion of advanced process control, modular design, IoT connectivity, robust cybersecurity, and user-centric interface, making it an ideal choice for industries seeking to enhance their operational performance while adapting to ever-evolving technological landscapes.
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