Batch material transfer control seems an easy task to carry out, but the reality is that many functions are necessary if the system is to accomplish accurate batch material transfer control. Weighing systems with device-level controls can help.
Despite the appearance of digital fieldbus technology in plants, well-proven HART technology still has a viable long-term role, notes Ed Ladd of the HART Communication Foundation. He adds that industry consultants predict that HART easily will be supported and remain a significant communications technology for the next 20+ years.
Ed T. Ladd, Jr., HART Communication Foundation, Austin, Texas
The constant-speed approach to AC motors made a lot of sense when energy was cheap and drives technology was in its infancy. With their latest advances, adjustable speed drives can provide one of the best energy efficiency options for a plant.