Troubleshooting

11.21Checking the characterization

A transmitter that is incorrectly characterized for its sensor might produce inaccurate output values. If the flowmeter appears to be operating correctly but sends inaccurate output values, an incorrect characterization could be the cause.

If you discover that any of the characterization data are wrong, perform a complete characterization. See Section 4.2.

11.22Checking the calibration

Improper calibration can cause the transmitter to send unexpected output values. If the transmitter appears to be operating correctly but sends inaccurate output values, an improper calibration may be the cause.

Micro Motion calibrates every transmitter at the factory. Therefore, you should suspect improper calibration only if the transmitter has been calibrated after it was shipped from the factory.

The calibration procedures in this manual are designed for calibration to a regulatory standard. See Chapter 10. To calibrate for true accuracy, always use a measurement source that is more accurate than the meter. Contact Micro Motion customer service for assistance.

Note: Micro Motion recommends using meter factors, rather than calibration, to prove the meter against a regulatory standard or to correct measurement error. Contact Micro Motion before calibrating your flowmeter. For information on meter performance, see Chapter 10.

11.23Checking the test points

Some status alarms that indicate a sensor failure or overrange condition can be caused by problems other than a failed sensor. You can diagnose sensor failure or overrange status alarms by checking the meter test points. The test points include left and right pickoff voltages, drive gain, and tube frequency. These values describe the current operation of the sensor.

11.23.1Obtaining the test points

To obtain the test points with ProLink II software:

1.Select Diagnostic Information from the ProLink menu.

2.Write down the values you find in the Tube Frequency box, the Left Pickoff box, the Right Pickoff box, and the Drive Gain box.

11.23.2Evaluating the test points

Use the following guidelines to evaluate the test points:

•If the drive gain is unstable, refer to Section 11.23.3.

•If the value for the left or right pickoff does not equal the appropriate value from Table 11-7,based on the sensor flow tube frequency, refer to Section 11.23.5.

•If the values for the left and right pickoffs equal the appropriate values from Table 11-7,based on the sensor flow tube frequency, record your troubleshooting data and contact Micro Motion customer service. See Section 1.8.

Compensation

Measurement Performance

Troubleshooting

Defaults

Configuration and Use Manual

105

Page 112 Page 114
Page 113
Image 113
Emerson Process Management 1500 manual Checking the characterization, Checking the calibration, Checking the test points
Page 112 Page 114

1500 specifications

Emerson Process Management 1500 is a cutting-edge distributed control system designed to enhance operational efficiency, safety, and reliability in industrial processes. Renowned for its robust architecture and scalable features, the 1500 system caters to various sectors, including oil and gas, pharmaceuticals, chemicals, and utilities.

One of the standout features of the Emerson 1500 is its modular design, allowing users to customize and scale the system according to their specific needs. This flexibility ensures that operations can grow and adapt without requiring a complete system overhaul. The control system supports a range of I/O modules, enabling integration with various field devices and technologies.

The Emerson 1500 employs advanced control algorithms to optimize process performance. This includes model predictive control (MPC) and multivariable control, which enhance the ability to manage complex processes through predictive analytics. This predictive capability not only improves operational efficiency but also reduces downtime and maintenance costs.

In addition to its advanced control features, the 1500 system is known for its user-friendly interface. Operators can easily navigate the system through intuitive graphics and dashboards, allowing them to monitor processes in real time. This ease of use significantly reduces training time and improves response times during operational changes or emergencies.

Security is a critical concern for modern industrial control systems, and the Emerson 1500 addresses this with a multi-layered security framework. This includes secure communications, robust authentication, and access controls, ensuring that only authorized personnel can interact with the system.

The Emerson Process Management 1500 also emphasizes interoperability, supporting various communication protocols such as Ethernet/IP, Modbus, and HART, facilitating seamless integration with existing infrastructure. This capability is particularly advantageous for organizations looking to modernize their systems without entirely replacing legacy equipment.

Furthermore, the system supports advanced data analytics and cloud connectivity, allowing organizations to leverage big data for predictive maintenance, performance benchmarking, and decision-making processes. By harnessing the power of data, users can achieve greater efficiencies and drive continuous improvement across their operations.

In summary, the Emerson Process Management 1500 is a versatile and advanced distributed control system characterized by modularity, advanced control features, user-friendliness, robust security, interoperability, and data analytics capabilities. Its comprehensive approach ensures that industries can not only meet current operational demands but also prepare for future challenges in an ever-evolving landscape.
Top Page Image Contents