Flow computer handles critical oil mass and volume calculations

New meter prover interface feature from ProSoft Technology performs sophisticated functions on Rockwell’s ControlLogix platform.

04/29/2011


New meter prover interface feature from ProSoft Technology performs sophisticated functions on Rockwell’s ControlLogix platform.ProSoft Technology has announced version 2.07 of its Liquid and Gas Flow Computer for the Rockwell Automation ControlLogix platform (MVI56-AFC). In oil applications, crude is extracted and transported through pipelines that often run hundreds of miles through varying climates, temperatures, and altitudes. As these elements vary, so do the properties of the petroleum, necessitating flow computers to validate the precise quantity of product at designated points along the pipeline. Precise flow calculations require accurate data from properly calibrated flow meters. Meter provers help validate proper flow meter operation.

The ProSoft Technology flow computer calculates a meter factor based on constants and variables affecting flow rates, accumulated volumes, and accumulated mass of the liquid petroleum product flowing through a prover with known volume. With the new meter-proving feature, the module is now able to communicate meter-prover test results directly to the control processor and SCADA control system. Operation of the prover-interface feature can be performed manually, completely automated, scheduled, triggered by events, or operator intervention.

The prover interface feature supports these prover types:

• Unidirectional pipe prover;
• Bidirectional pipe prover;
• Compact prover; and
• Master meter prover.

The module resides directly in the ControlLogix chassis, acting as an add-on co-processor, dedicated to calculating flow measurements without burdening the PLC with complicated flow algorithms. Additional features include:

• Multiple, independently-configuratble meter streams: The module supports up to 16 meter runs with four streams per meter and allows the PLC/PAC to switch the active stream via program logic. Each of the channels are individually configurable to calculate hydrocarbon gas or liquid flows.

• High precision analysis for multiple streams: Fractional components of hydrocarbon gases may be entered as floating-point values with precision of seven or more significant digits.

• Completely automated control: The module is programmed, managed, and monitored by the PLC or SCADA system.

• Complies with AGA 3, 7, 8, and MPMS Chapters 11 and 12.2 measurement standards.

• Event log lockout security: Prevents overwriting past events which have not yet been downloaded and archived in some off-module system.

• Modbus dictionary: This index allows users to locate the Modbus address of needed data.

www.prosoft-technology.com

Visit the Control Engineering Process Control channel.

Edited by Peter Welander, pwelander(at)cfemedia.com



No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
High-performance buildings; Building envelope and integration; Electrical, HVAC system integration; Smoke control systems; Using BAS for M&V
Pressure piping systems: Designing with ASME; Lab ventilation; Lighting controls; Reduce energy use with VFDs
Smoke control: Designing for proper ventilation; Smart Grid Standard 201P; Commissioning HVAC systems; Boilers and boiler systems
Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Consulting-Specifying Engineer case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.

Protecting standby generators for mission critical facilities; Selecting energy-efficient transformers; Integrating power monitoring systems; Mitigating harmonics in electrical systems
Commissioning electrical systems in mission critical facilities; Anticipating the Smart Grid; Mitigating arc flash hazards in medium-voltage switchgear; Comparing generator sizing software
Integrating BAS, electrical systems; Electrical system flexibility; Hospital electrical distribution; Electrical system grounding
Cannon Design’s blog is a place for the many voices of the firm to share thoughts and news related to current projects...
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.