Reviewed resource: Field instruments under a microscope

09/20/2007


Occasionally whitepapers and articles cross our desks that might be a little too proprietary for regular editorial use, but they still have some particular interest beyond a specific product or manufacturer. A recent paper written for the Profibus International User Conference by James Powell, an engineer for Siemens Milltronics division, brings up some interesting points about one of the lesser known capabilities of a process fieldbus.

Powell has found that acyclic data capabilities of Profibus (and potentially other similar architectures) when combined with the right type of control equipment, can look deep into a piece of process instrumentation and find what is going on in the most detailed levels. This method avoids all tendencies for the network and controller to smooth over microscopic but violent changes in the data that go on between checkpoints.

As Powell puts it, “Being able to look at your instruments through this 'microscope' has its advantages and its challenges. The main advantage is you now can know the instant your instrument is having a problem. You have a far more accurate picture of the accuracy of your data. You also now have to manage this information. That is the challenge!”

This detailed paper is available from the Control Engineering Resource Center .

—Peter Welander, process industries editor, PWelander@cfemedia.com ,
Control Engineering Weekly News





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
Each year, a panel of Control Engineering editors and industry expert judges select the System Integrator of the Year Award winners.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Learn how to create value with re-use; gain productivity with lean automation and connectivity, and optimize panel design and construction.
Go deep: Automation tackles offshore oil challenges; Ethernet advice; Wireless robotics; Product exclusives; Digital edition exclusives
Lost in the gray scale? How to get effective HMIs; Best practices: Integrate old and new wireless systems; Smart software, networks; Service provider certifications
Fixing PID: Part 2: Tweaking controller strategy; Machine safety networks; Salary survey and career advice; Smart I/O architecture; Product exclusives
The Ask Control Engineering blog covers all aspects of automation, including motors, drives, sensors, motion control, machine control, and embedded systems.
Look at the basics of industrial wireless technologies, wireless concepts, wireless standards, and wireless best practices with Daniel E. Capano of Diversified Technical Services Inc.
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
This is a blog from the trenches – written by engineers who are implementing and upgrading control systems every day across every industry.
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Control Engineering 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.