Optional Transmitter Configuration

8.Define the standard density to be used in calculations.

•To use a fixed standard density, click the top radio button, enter a value for standard density in the Standard Density textbox, and click Next.

•To use a calculated standard density, click the second radio button and click Next. Then enter values for Reference Temperature, Reference Pressure, and Specific Gravity on the next panel, and click Next.

9.Check the values displayed.

•If they are appropriate for your application, click Finish. The special unit data will be written to the transmitter.

•If they are not appropriate for your application, click Back as many times as necessary to return to the relevant panel, correct the problem, then repeat the above steps.

6.5Configuring cutoffs

Cutoffs are user-defined values below which the transmitter reports a value of zero for the specified process variable. Cutoffs can be set for mass flow, volume flow, or density.

See Table 6-1for cutoff default values and related information. See Sections 6.5.1 and 6.5.2 for information on how the cutoffs interact with other transmitter measurements.

Table 6-1Cutoff default values

Cutoff type

Default

Comments

 

 

 

Mass flow

0.0 g/s

Recommended setting: 0.5–1.0% of the sensor’s rated maximum flowrate

 

 

 

Volume flow

0.0 L/s

Lower limit: 0

 

 

Upper limit: the sensor’s flow calibration factor, in units of L/s, multiplied by 0.2

 

 

 

Density

0.2 g/cm3

Range: 0.0–0.5 g/cm3

 

 

 

6.5.1Cutoffs and volume flow

The mass flow cutoff is not applied to the volume flow calculation. Even if the mass flow drops below the cutoff, and therefore the mass flow indicators go to zero, the volume flow rate will be calculated from the actual mass flow process variable.

However, the density cutoff is applied to the volume flow calculation. Accordingly, if the density drops below its configured cutoff value, both the reported density and the reported volume flow rate will go to zero.

6.5.2Interaction with the AO cutoff

The mA output also has a cutoff – the AO cutoff. If the mA output is configured for mass or volume flow:

•And the AO cutoff is set to a greater value than the mass and volume cutoffs, the flow indicators will go to zero when the AO cutoff is reached.

•And the AO cutoff is set to a lower value than the mass or volume cutoff, the flow indicator will go to zero when the mass or volume cutoff is reached.

See Section 4.5.3 for more information on the AO cutoff.

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

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Emerson Process Management 1500 manual Configuring cutoffs, 1Cutoff default values, Cutoffs and volume flow
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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.

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.

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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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