Keep measurements on the level
This article looks at six technologies mechanical floats and displacers, differential pressure, capacitance, ultrasonic, radar, and guided wave radar that are used most often for automated control, and provides practical guidance for choosing among them.
Rethink experiment design
The traditional approach to experimentation, often referred to as the scientific method, requires changing only one factor at a time (OFAT), but this method only allows one to see things one dimension at a time. By varying factors only at two levels each, but simultaneously rather than one at a time, experimenters can uncover important interactions.
Wireless devices may get a shake up
Last months ISA Expo in Houston clearly showed how much attention wireless technology is attracting. However, concern about the reliability and life of batteries remains an issue. Thats why harvested or scavenged power is attracting interest.
Outsourcing innovation development
A new development method may allow breaking away from the pack as companies continue to employ outsource facilities that offer flexibility and foster innovation.
Check for human errors
You may be making an error if you dont find time to double-check your own and others work. Making time to check human work can prevent costly mistakes and save time.
Get answers to your biomonitoring questions
Guidance for chemical manufacturers, processors, and distributors about Section 8(e) of the Toxic Substances control act was issued on September 14, by the U.S. Environmental Protection Agency (EPA). Chemical Processing's Regulatory Editor Lynn Bergeson discusses the new regulation.
Rise to the challenge of global legislation
Despite having a parliament that regularly shuttles itself, lock, stock and ballot box, for four days each month between Brussels, Belgium, and Strasbourg, France, the European Union (EU) still manages to put out an amazing amount of legislation.
Industry tackles a grave issue
End-of-life and other product stewardship initiatives will impact chemical plants. An agreement to lessen the environmental impact of chemicals production will have global ramifications. Meanwhile, European end-of-life directives on electrical and electronic equipment already are having a worldwide effect.
How to select control valves, Part 2
When it comes to selecting and sizing control valves and positioners, this article not only helps you pick the right one for the right job, but also includes a valuable valve selection chart you can download!
Welcome to the Bus Wars, Part Tres
You may not be aware, but a new bus war is being waged in your plant the battle of the motion networks. Control Global's Senior Tech Editor Dan Hebert, PE, provides analysis and commentary on the newest battle over fieldbus.
The FRETT approach to pump problems
Some U.S. oil refineries repair their centrifugal pumps every three years while other refineries enjoy an average repair interval of 10 years. Learn about the highest-performing refineries and other petrochemical companies that have significantly reduced pump failures, and how you can obtain the same results.
Nominations open for 2007 Plant Innovation Award
Chemical Processings Plant Innovation Award is presented annually to recognize innovative solutions to processing problems at chemical plants throughout the world. Nominate a worthy candidate today.
Raising the bar for control system security
Security researchers at Wurldtech Analytics are partnering with ISA to establish procedures and an operations model for the security testing and certification of products used for control.
Implementing an operations management system
Things are changing at warp speed. Manufacturing companies are collecting large volumes of data from data systems but improvements are possible only if the data are analyzed and developed into useful business parameters.
Washington targets plant security
Federal actions undoubtedly will markedly impact the chemical industry. Nevertheless, we dont know at this point whether federal chemical security legislation will happen in 2006.
Ensure proper silo design
Designing equipment for solids is not an exact science. The flows of gases and liquids are generally better understood than those of solids. Most production problems arise from flaws in the design. This article presents questions you can ask yourself to ensure reliable flow in your silo.