Measurement Performance

Meter verification either holds the last output value or causes the outputs to go to the configured fault values during the procedure (approximately 4 minutes).

Micro Motion recommends that you perform meter verification on a regular basis.

10.2.2Meter validation and meter factors

Meter validation compares a measurement value reported by the transmitter with an external measurement standard. Meter validation requires one data point.

Note: For meter validation to be useful, the external measurement standard must be more accurate than the sensor. See the sensor’s product data sheet for its accuracy specification.

If the transmitter’s mass flow, volume flow, or density measurement is significantly different from the external measurement standard, you may want to adjust the corresponding meter factor. A meter factor is the value by which the transmitter multiplies the process variable value. The default meter factors are 1.0, resulting in no difference between the data retrieved from the sensor and the data reported externally.

Meter factors are typically used for proving the flowmeter against a weights and measures standard. You may need to calculate and adjust meter factors periodically to comply with regulations.

10.2.3Calibration

The flowmeter measures process variables based on fixed points of reference. Calibration adjusts those points of reference. Three types of calibration can be performed:

•Zero (see Section 3.5)

•Density calibration

•Temperature calibration

Density and temperature calibration require two data points (low and high) and an external measurement for each. Calibration produces a change in the offset and/or the slope of the line that represents the relationship between process density and the reported density value, or the relationship between process temperature and the reported temperature value.

Note: For density or temperature calibration to be useful, the external measurements must be accurate.

Flowmeters are calibrated at the factory, and normally do not need to be calibrated in the field. Calibrate the flowmeter only if you must do so to meet regulatory requirements. Contact Micro Motion before calibrating your flowmeter.

Micro Motion recommends using meter validation and meter factors, rather than calibration, to prove the meter against a regulatory standard or to correct measurement error.

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Micro Motion® Model 1500 Transmitters with the Filling and Dosing Application

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Emerson Process Management 1500 manual Meter validation and meter factors, Calibration, Measurement Performance
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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.

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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.

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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.
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