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Emerson 5081FG instruction manual Fault 1, Open Thermocouple

Models: 5081FG

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Instruction Manual

IB-106-5081, Rev. 1.0 May 2005

Model 5081FG

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Figure 6-5. Fault 1, Open Thermocouple

a.Fault 1, Open Thermocouple

The thermocouple connection is open. The fault displays as shown in Figure 6-5.

1.Refer to Figure 6-4and check the thermocouple wiring connections at terminals 8 and 10. Ensure the wires are properly connected.

2.Remove power. Disconnect the ther- mocouple wires (gray and red) from terminals 10 and 8. Measure the conti- nuity across the gray and red thermo- couple leads. The measurement should read approximately 1-2 ohms. Larger values indicate the thermocou- ple is open.

3.If the thermocouple is open, replace the oxygen probe per paragraph 5-2.

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Figure 6-6. Fault 2, Reversed Thermocouple

b.Fault 2, Reversed Thermocouple Active

The thermocouple connections are re- versed. The fault displays as shown in Fig- ure 6-6.

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 6-4.Check the gray (to terminal 10) and red (to terminal 8) wires for the proper placement.

3.Using a multimeter, measure between terminals 8(-) and 10(+). If the reading is negative, the thermocouple wiring is reversed. Rewire as necessary.

4.If the wiring is correct and the probe is at operating temperature, then the transmitter electronics are bad. Re- place the faulty analog or CPU board per paragraph 5-1.

6-4 Troubleshooting

Rosemount Analytical Inc. A Division of Emerson Process Management

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Emerson 5081FG instruction manual Fault 1, Open Thermocouple
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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.