AMCA approves revision to fan sound ratings
AMCA International adds requirements for sound performance licensing and details test setups for air curtain units.
The Air Movement and Control Association International Inc. ( AMCA ) approved the July 2009 revision to AMCA 311, the product-rating manual for AMCA-certified ratings of fan sound performance. Products that can bear the AMCA Certified Ratings seal are centrifugal fans, axial fans, power roof ventilators, air curtains, agricultural fans, and other air-moving devices.
The revision provides additional requirements for sound performance licensing of air curtain units (ACUs), where specific test setups were not previously detailed. The new standardized test will allow buyers or specifiers of ACUs to fairly compare sound rating information. The program applies only to devices that are already licensed with the AMCA Certified Performance seal for air performance.
Annual Salary Survey
After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.
The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.