Emerson 5081FG instruction manual Fault 5, O2 Cell Open Fault 6, Cell Impedance Too High

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Instruction Manual

IB-106-5081, Rev. 1.0 May 2005

Model 5081FG

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Figure 6-9. Fault 5, O2 Cell Open

Figure 6-10. Fault 6, Cell Impedance Too High

e. Fault 5, O2 Cell Open

f. Fault 6, Cell Impedance Too High

The O2 cell connection is open. The fault displays as shown in Figure 6-9.

1.Allow adequate time for the oxygen probe to reach operating temperatures. Probe temperatures below approxi- mately 500°C (932°F) may result in this fault.

2.Refer to Figure 6-4and check the O2 cell wiring connections at terminals 7 and 8. Ensure the wires are properly connected.

NOTE

Check the cell output voltage at the probe terminals -- not at the electronics.

3.Apply low calibration check gas (0.4% O2). Measure the cell output from the O2 cell wires at the probe terminal block. The cell output should be 100 ±20 mV. If no voltage can be meas- ured, the cell is open.

4.If the O2 cell is open, replace the oxy- gen probe per paragraph 5-2.

The O2 cell impedance has exceeded 100 ohms. The fault displays as shown in Figure 6-10.

1.This fault is usually indicated in con- junction with Fault 5, Cell Open. Cor- recting Fault 5 should correct Fault 6.

2.If Fault 6 appears independently, the cell has degraded beyond specification.

3.If the O2 cell has become too old, re- place the oxygen probe per paragraph 5-2.

6-6 Troubleshooting

Rosemount Analytical Inc. A Division of Emerson Process Management

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Contents Model 5081FG Essential Instructions Effective May, 2005 Rev Highlights of ChangesSummary Page Table of Contents Model 5081FGList of Illustrations List of Tables Model 5081FG Preface DefinitionsModel 5081FG Belangrijk Vigtigt Model 5081FG Tärkeää Model 5081FG Wichtig Importante Viktig Model 5081FG Model 5081FG Viktigt Model 5081FG Section Description and Specifications Component Checklist of Typical System Package ContentsProduct Matrix Code Mounting Adapter Stack SideSystem Configuration System OverviewScope System DescriptionSystem Features Handling the Analyzer System Considerations Typical System Installation TransmitterSpecifications ProbeLift OFF Maximum Power Supply Voltage OhmsVDC Operating Load RegionSection Installation PRE-INSTALLATIONMechanical Installation InspectFront View Side View Bottom ViewMetal Wall Masonry Wall Stack or Duct Horizontal Probe Installation Adjusting Probe Insertion Depth Model 5081FG Installing Model 5081 Transmitter Cover Lock Circuit Terminal ENDBlock TB Mounting HolesDisplay Positioning Assembly Electrical InstallationTerminal Block Conduit Model 5081 Transmitter 4-20 mA and Signal ConnectionsThermocouple CELL-WH CELL+BK Pneumatic Installation Reference Air PackageInstrument Air Reference Air Calibration Check GasOutlet Connection OutletInlet Connection Flow SET MAX Point Knob Mounting HolesSection Startup and Operation Power UPGeneral Reestablishing Proper Calibration Check GAS Flow Rate Proper Calibration Check Gas Flow RateOperation OverviewDisplay Menu TreeDiagnostics CalcheckMenu ProgramInfrared Remote Control IRC NavigationO2 Concentration Analyzer Access Code Or Security Analyzer Access CodeProgram Menu O2 ConcentrationO2 Concentration Indicator Fault Value O2 Concentration Upper Cell Temperature Fault ValueUpper Range VAL Cell T HIReset MAX Cell T To Reset Maximum Cell TemperatureO2 Concentration Analyzer Access Code SET O2 Filter TimeSET LO Bottle O2 SET HI Bottle O2Concentration Model 5081 Transmitter Parameters Parameter Range DefaultModel 5081 Transmitter Parameters SET Code Show Fault Diagnostics MenuC mV 23. Cell Impedance 24. Previous Slope Previous ConstantCalcheck Menu 27. in MANUAL? Accept LOW O229. Accept LOW O2 Slope Model 5081FG Hart Communicator Signal Line Section HART/AMSOverview ConnectionsMethod 2, For Load Resistance 250 Ohms Analog Output DeviceTWO-WIRE in Situ Oxygen Analyzer Hart Communicator PCOFF-LINE and ON-LINE Operations Menu Tree for Hart CommunicatorDevice Setup From Sheet Basic Setup Detailed From Sheet Signal Condition Detailed Setup Output Hart Communicator Start CAL- Check Method Model 5081FG Section Maintenance and Service Model 5081 Electronics ReplacementDisplay Board Replacement Spare Board Stack ReplacementTwo-Wire In Situ Oxygen Analyzer Exploded View Ribbon Cable Analog Board CPUOxygen Probe Replacement Oxygen Probe Terminal Block Section Troubleshooting Probe LifeNormal Operational Conditions IMPEDANCE, ΩOfresponse Fault IndicationsSpeed Identifying and Correcting Fault Indications ThermocoupleFault 1, Open Thermocouple Fault 3, Shorted Thermocouple Fault 5, O2 Cell Open Fault 5, O2 Cell Open Fault 6, Cell Impedance Too HighFault 7, Reversed O2 Cell 11. Fault 7, Reversed O2 CellModel 5081FG Section Return of Material Model 5081FG Replacement Parts Replacement Parts ListSection Index No Part Number DescriptionModel 5081FG Section Index Model 5081FG Model 5081FG Page Warranty Two-Wire In Situ Oxygen Analyzer Serial no Order no

5081FG specifications

The Emerson 5081FG Series is a cutting-edge digital smart transmitter designed for various industrial applications, including oil and gas, chemical processing, and water treatment. Known for its accuracy and reliability, the Emerson 5081FG integrates an array of advanced technologies to enhance measurement capabilities and operational efficiency.

One of the main features of the 5081FG is its multi-variable measurement, which allows for the integration of differential pressure, static pressure, and temperature readings into a single device. This capability significantly reduces the need for multiple instruments, leading to lower installation costs and improved data collection efficiency.

With Smart Wireless technology, the Emerson 5081FG offers robust wireless communication, making it ideal for remote or hard-to-reach locations. Its ability to transmit real-time data wirelessly enhances operational awareness and enables proactive maintenance decisions. The transmitter can easily connect to various process control systems for seamless integration and data sharing.

The 5081FG also incorporates Emerson's advanced diagnostics and predictive maintenance algorithms. These features continuously monitor the health of the transmitter and the processes it measures, alerting operators to potential issues before they escalate into serious problems. This proactive approach to maintenance not only improves safety but also minimizes downtime and maximizes productivity.

Another significant characteristic of the Emerson 5081FG is its rugged design, built to withstand harsh industrial environments. With an IP67 rating, it is resistant to dust and water ingress, ensuring reliable operation even in challenging conditions. The device is also designed to handle a wide range of temperatures and pressures, making it versatile for diverse applications.

User-friendly configuration and programming are facilitated by Emerson's intuitive software tools, which provide easy setup and calibration processes. This simplicity allows operators to optimize performance without needing extensive training or support.

In conclusion, the Emerson 5081FG is a powerful and reliable smart transmitter that addresses the needs of various industries. Its multi-variable measurement capability, wireless communication, advanced diagnostics, and rugged design make it an excellent choice for companies looking to enhance their operational efficiency and maintain high standards of safety and reliability. With the Emerson 5081FG, businesses can expect not only accurate measurements but also valuable insights that contribute to smarter decision-making.
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