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Activity

  • Utilizing Wireless Throttling Valves in Control

    Terry Blevins
    Over the last five years a wide variety of WirelessHART transmitters have been introduced by the major manufacturers of field devices. The PIDPlus enables closed loop control using the slower update rate provided by a wireless transmitter. The broad acceptance of wireless transmitters has generated an interest in the application of wireless throttling valves in … Continue reading » Read the full text.

  • Magnetrol Model 706 Rev 1 Fieldbus Device Files

    Larry Griffin
    In Emerson’s continuing commitment to open and interoperable standards, the Magnetrol Model 706 Rev 1 has passed the rigorous and comprehensive testing of the DeltaV Stress Test labs. Using the Device Installation Kits for Emerson Products website at http://www2.emersonprocess.com/en-US/documentation/deviceinstallkits/Pages/deviceinstallkitsearch.aspx, these fieldbus device files are now available for use. Read the full…

  • Flow Control – Positive Displacement Pump Part 2

    Terry Blevins
    When using a positive displacement pump in flow control, then the minimum flow which may be achieved using a variable speed drive is limited by the motor low speed limit. It is possible to achieve a wider range of flow control by regulating flow using a fixed speed motor and a throttling valve in combination … Continue reading » Read the full text.

  • Flow Control – Positive Displacement Pump Part 1

    Terry Blevins
    Positive displacement pumps may be used when it is necessary address flow requirements of 2GPM or less. The pump design ( e.g. vane, gear, peristaltic) selected for a particular application should be based on properties of the liquid and the expected operating condition. One characteristic of a positive displacement pump is that when it is … Continue reading » Read the full text.

  • Flow Control – Centrifugal Pump

    Terry Blevins
    Centrifugal pumps can be used to transfer large volumes of liquid between vessels in an industrial process. When a constant speed motor is used to drive the pump then the pump flow rate may be controlled by adjusting a throttling valve that is installed after the pump discharge, as illustrated below. The pump discharge pressure … Continue reading » Read the full text.

  • Wireless Control – ACC 2014

    Terry Blevins
    The 2014 American Control Conference, ACC, will be held Wednesday through Friday, June 4 – 6, at the Hilton Portland & Executive Tower, Portland, OR. As noted on the conference web site, the ACC is internationally recognized as a premier scientific and engineering conference dedicated to the advancement of control theory and practice. Last year … Continue reading » Read the full text.

  • High Speed Wireless Control

    Terry Blevins
    I was recently sent a link to a YouTube video of a control demonstration by professor Raffaello D’Andrea, The Institute for Dynamic Systems and Control at ETH, Swiss Federal Institute of Technology, Zurich. ETH is one of the world’s leading universities for technology and the natural sciences. I found the demonstration by Professor D’Andrea to … Continue reading » Read the full text.

  • DeltaV system historian options expanded

    Chris Felts
    Over the years, the DeltaV system has evolved, and so has the platform used for collecting and storing real-time process data generated by DeltaV controllers, workstations, and non-DeltaV data sources. The DeltaV system currently provides three historian options: the DeltaV Continuous Historian, the Advanced Continuous Historian, and the enterprise historian. Each historian represents different levels of functionality…

  • The Changing Web

    Terry Blevins
    It is quite easy to upload and store a power point presentation as a Slideshare file on the Slideshare web site. Once a presentation is uploaded in this manner then it may be viewed by anyone through the Slideshare web site. In addition, the Slideshare web site includes tools that that allow an audio recording … Continue reading » Read the full text.

  • WirelessHART – Monitoring and Control of On-Off Valves

    Terry Blevins
    A number of WirelessHART devices have been introduced over the last few years to monitor the status of on/off valves. For example, the TopWorx 4310 WirelessHART Valve Position Monitor can be used detect linear and rotary movement using non-contact technology with limit switch feedback. Such devices provide a low cost way to monitor the position … Continue reading » Read the full text.

  • WirelessHART – Level Switch

    Terry Blevins
    In many tank level control applications, a level switch is installed and used as an interlock to help prevent overfilling the tank. For example, in many existing installations you may find a vibrating fork liquid level switch wired as an input to the control system. However, today it is possible to reduce the cost of installing a … Continue reading » Read the full text.

  • Krohne UFC400 Rev 1 Fieldbus Device Files

    Larry Griffin
    In Emerson’s continuing commitment to open and interoperable standards, the KROHNE UFC400 Rev 1 has passed the rigorous and comprehensive testing of the DeltaV Stress Test labs. Using the Device Installation Kits for Emerson Products website at http://www2.emersonprocess.com/en-US/documentation/deviceinstallkits/Pages/deviceinstallkitsearch.aspx, these fieldbus device files are now available for use. Read the full text…

  • WirelessHART – Discrete Measurement

    Terry Blevins
    Many manufacturers initially introduced WirelessHART field devices that were designed to support continuous process measurements such pressure, flow, temperature, and level. Also, WirelessHART transmitters are now available for analytical measurements such as pH. Recently you may have noticed that some manufacturers have introduced WirelessHART field devices for discrete measurement. For example, Rosemount has released…

  • 2014 Emerson Global Users Exchange Americas – Call for Presentations

    Larry Griffin
    The 2014 Emerson Global Users Exchange Americas needs your excellent presentations and user content to continue the tradition of our high quality, user-driven conference. The theme of this year’s Emerson Exchange is ‘Inspiring Ingenuity‘ – an opportunity to meet with industry professionals and peers in an exhilarating environment where creativity, inventiveness and talent work in [...] Read the full text.

  • Wireless Measurements in Control Applications

    Jim Cahill
    As wireless technology continues to be used in process manufacturing facilities, those used in control applications are increasing. At the ISA Automation Week conference, Emerson’s Terry Blevins, Mark Nixon, and Marty Zielinski authored the paper, Using Wireless Measurements in Control Applications. Terry and Marty presented it for Automation Week attendees. They discussed the impact of […] Read the full text.

  • Finding a Patent

    Terry Blevins
    When exploring a new area of technology, it is often helpful to find out what patents have been granted or are pending. The patent office allows anyone to explore the patent office database free of charge. A quick search capability is provide that allows you to easily find out what patent have been granted to … Continue reading » Read the full text.

  • New DeltaV SIS with Electronic Marshalling for Migrations Product Data Sheet

    Larry Griffin
    With DeltaV SIS with Electronic Marshalling for Migrations hardware, you can migrate to DeltaV SIS without having to add cabinets, custom cables, or extra marshalling. (900KB PDF) Read the full text.

  • New M-series Mass Connection Solutions Product Data Sheet

    Larry Griffin
    The DeltaV M-series Mass Connection Solutions make connecting field devices to I/O cards fast and easy. (910KB PDF) Read the full text.

  • Emerson Exchange 2013 – Workshop Videos

    Terry Blevins
    Emerson Exchange was held this year at the Gaylord Texan Hotel and Convention Center, Grapevine, TX on Sept 30th – Oct 4th, 2013. Over 350 workshops were hosted over a three day period. In addition, on the last day of Emerson Exchange, a small number of Meet the Expert workshops were presented. This year the … Continue reading » Read the full text.

  • Willy Wojsznis – ISA Fellow

    Terry Blevins
    The International Society of Automation (ISA) Fellow grade is provided to qualified senior ISA members who have made exceptional engineering or scientific contributions to the field of automation that advance the state of the art. Nomination requires a minimum of five Fellow evaluators or a combination of nine Fellows and Senior Members. The candidates nominated … Continue reading » Read the full text.

  • More on Foundation Fieldbus and HART

    Jim Cahill
    I wanted to bring visibility to several recent comments from an earlier post, Major Difference between Foundation Fieldbus and HART Protocols. Here’s the summation thought from the first comment: …With one software package, and as put above with HART pass-through, you can document EVERY HART instrument on site, and THEN with Plantweb, monitor the lot […] Read the full text.

  • Using Wireless Measurements In Control Applications

    Terry Blevins
    Wireless transmitters may be preferred in applications where new measurements are required since the cost may be lower than that associated with installing wired transmitters. However, there is a significant differences in the frequency and manner in which a new measurement value is updated by a wired transmitter vs. a wireless transmitter. Such differences must … Continue reading » Read the full text.

  • Updated Dual Monitor Workstation Product Data Sheet

    Larry Griffin
    The DeltaV Dual Monitor Workstation offers a larger viewing area, driven from a single keyboard and mouse. (333KB PDF) Read the full text.

  • Updated DeltaV Touchscreen Product Data Sheet

    Larry Griffin
    Touch and lift to easily manage your process with the intuitive DeltaV Operator Touchscreen interface. (93KB PDF) Read the full text.

  • New DeltaV Virtualization – High Availability and Disaster Recovery Whitepaper

    Larry Griffin
    This whitepaper describes High Availability and Disaster Recovery features supported by DeltaV Virtual Studio. (1.18MB PDF) Read the full text.

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