The goal of enterprise-wide networking is to tie all computers, applications, printers, control systems, intelligent devices, and the Internet/intranet together to achieve real-time communications throughout the corporation.Long the network of choice at business levels of an enterprise, recent reports insist Ethernet works for industrial networking and permits a single network architectur...
Some companies are evolving control rooms into operations centers and locating them further from process areas. Success requires ability to identify, understand, and address the unique challenges arising when large distances separate team members.For the most part, today's control rooms evolved from advances in instrumentation and control systems, but the evolution is not over.
Because they've been around so long, everyone already knows all there is to know about 4-20 mA transmitters and how to install them. But, if so much is known about selecting and installing 4-20 mA transmitters, why do the same questions keep coming up? Questions like:Transmitter classificationsUnderstanding differences between two-, three- and four-wire devices will help clear up several ...
It seemed like a simple enough question. "How many pages we will have in the September issue?" I asked our managing editor. "That depends on who's counting," he replied. Our business department monitors pages according to ad revenue; the post office counts pages by demographic distribution; and we editors count pages in terms of articles, news, and other information in the magazine.
Environmental law, customers, and good business sense require finding effective ways to integrate plant safety into industrial process systems. No one wants an unsafe situation, but overengineering safety can put a company out of business almost as fast as a major violation.Regulatory agencies' standards and regulations require process plants to protect against accidental damage to person...
Keeping processes running to specification requires accurate calibration of plant instrumentation. Pressure instrumentation, including gages, switches, transmitters, transducers, and differential-pressure units, all require this attention on a regular basis. Calibration equipment types vary widely.
They may or may not beat the Texas heat, but visitors and exhibitors at ISA Expo/98 will certainly find what they need to clobber competitors at this year's event.Billed by organizers as the biggest control and instrumentation show ever, ISA Expo/98 is the second alternate-year-format event for ISA, the international society for instrumentation and control (Research Triangle Park, N.
Adding intelligence to sensors is a definite trend in the industry. Not too long ago, users were content with just on/off contacts. Engineers now are eager to implement networks. With machine uptime a critical issue, the ability to implement diagnostics to improve maintenance response is also essential.
You have to install a new manufacturing data network. Before you call for a truck-load of twisted-pair copper wire, better check out all the applications. There may be areas where copper won't work.There are other choices. Fiber-optic technology is not new, but is becoming easier to use. Radio frequency is moving from warehouse data collection to sensors and networking.
Considering the globalization trend of industry, a completed control system may be shipped anywhere in the world. To discover what users want and need in enclosures, Control Engineering surveyed 1,500 readers. Of the 465 responses, 50% work in process industries while 39% identified their primary application as discrete product manufacturing.