This Edition Sponsored by Kobold Instruments
Kobold's Complimentary Catalog – Sensors, switches and transmitters
The catalog features a sampling of our innovative products for monitoring and measuring liquids and gases, and provides one of the broadest lines of sensors, switches and transmitters in the industry … combining quality and reliability of a German design with the cost-effectiveness and quick delivery of a U.S. manufacturing facility.
Issue Highlights
- Plant automation's evolution
- The future of fieldbus
The evolution of plant automation
Understanding the purpose of control and safety systems helps users ensure each is appropriately optimized. The duties of the SIS are to protect the people, environment and assets against unsafe conditions.
NeSSI taxis for takeoff
Though acceptance and networking hurdles remain, the New Sampling/Sensor Initiative (NeSSI) is starting to emerge in real-world, standardized, modular process control applications.
Still pondering whither fieldbus?
We predict HART devices will work so well that your career may be over before you can justify the cost to replace them with fieldbus.
Take our 2007 Readers' Choice Awards survey, win an iPod
The survey asks you to name the best technology provider in each of 47 categories. As a token of appreciation for your participation in our survey, one respondent will be randomly selected to receive a 30-GB video iPod, so be sure to include your contact information at the end of the survey.
Catalysts streamline biodiesel process
Read the digital edition of Chemical Processing magazine
Process Puzzler
A corrosive material is transported by vacuum pneumatic conveyor from a dryer to silo. The condition at the discharge of the dryer is about 90°F and 75% relative humidity. Since commissioning during the summer, the blower has suffered reliability problems: seal corrosion, bearing failure, motor trips and noisy operation. In particular, bearing failure has been the number one problem with this blower. Failures are worse in the fall and winter than in the summer. Current readings on the blower tend to increase slightly during the winter but the draw seems normal until sudden failure of the seals or bearings. What is the likely cause and what can we do to reduce reliability problems?
E-mail us at ProcessPuzzler@putman.net. Send us your comments, suggestions or solutions for this question by June 8, 2007. We'll include as many of them as possible in the July 2007 issue and all on CP.com. Send visuals — a sketch is fine. E-mail us at ProcessPuzzler@putman.net or mail to ProcessPuzzler, Chemical Processing, 555 W. Pierce Rd., Suite 301, Itasca, IL 60143. Fax: (630) 467-1120. Please include your name, title, location and company affiliation in the response. And, of course, if you have a process problem you'd like to pose to our readers, send it along and we'll be pleased to consider it for publication.
Sponsored Product
Kobold's DVZ Vortex Flow Meter
Kobold's DVZ Vortex Flow Meter is a cost-effective solution for measuring and monitoring flow of low viscosity liquids. The DVZ is virtually maintenance-free and its quick response time is perfect for monitoring cooling circuits on robotic welders, plasma cutters and other critical applications.
New Products
Shimadzu's formula predictor uses high mass accuracy MSn data
Balston's hydrogen gas generator eliminates need for cylinders
Upcoming Events
4th Annual Six Sigma in Sales & Marketing Conference
May 23 - 24, 2007, Chicago
Hidden Costs and Side Effects Associated with Safety Systems Embedded with Control Systems
June 5, 2007, On-Demand Webcast
Honeywell 2007 Users Group Americas
June 10 - 14, 2007, Phoenix
