Measurement Performance

10.2.4Comparison and recommendations

When choosing among meter verification, meter validation, and calibration, consider the following factors:

•Process interruption

-Meter verification requires approximately four minutes to perform. During these four minutes, flow can continue (provided sufficient stability is maintained); however, outputs will not report process data.

-Meter validation for density does not interrupt the process at all. However, meter validation for mass flow or volume flow requires process down-time for the length of the test.

-Calibration requires process down-time. In addition, density and temperature calibration require replacing the process fluid with low-density and high density fluids, or low-temperature and high-temperature fluids.

•External measurement requirements

-Meter verification does not require external measurements.

-Zero calibration does not require external measurements.

-Density calibration, temperature calibration, and meter validation require external measurements. For good results, the external measurement must be highly accurate.

•Measurement adjustment

-Meter verification is an indicator of sensor condition, but does not change flowmeter internal measurement in any way.

-Meter validation does not change flowmeter internal measurement in any way. If you decide to adjust a meter factor as a result of a meter validation procedure, only the reported measurement is changed – the base measurement is not changed. You can always reverse the change by returning the meter factor to its previous value.

-Calibration changes the transmitter’s interpretation of process data, and accordingly changes the base measurement. If you perform a zero calibration, you can restore the factory zero at a later time. You cannot return to the previous zero (if different from the factory zero), density calibration values, or temperature calibration values unless you have manually recorded them.

Micro Motion recommends obtaining the meter verification transmitter option and performing meter verification on a regular basis.

10.3Performing meter verification

Note: To use meter verification, the transmitter must be paired with an enhanced core processor, and the meter verification option must be purchased for the transmitter.

The meter verification procedure can be performed on any process fluid. It is not necessary to match factory conditions. Meter verification is not affected by any parameters configured for flow, density, or temperature.

During the test, process conditions must be stable. To maximize stability:

•Maintain a constant temperature and pressure.

•Avoid changes to fluid composition (e.g., two-phase flow, settling, etc.).

•Maintain a constant flow. For higher test certainty, reduce or stop flow.

Compensation

Measurement Performance

Troubleshooting

Defaults

Configuration and Use Manual

83

Page 90 Page 92
Page 91
Image 91
Emerson Process Management 1500 manual Comparison and recommendations, Performing meter verification
Page 90 Page 92

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