Air conditioning control
Provide full-capacity modulation for all sizes of direct-expansion A/C system that use R-410A refrigerant with the APR-410 control from Rawal Devices Inc. The control continuously matches A/C system capacity/output to changing load conditions by varying refrigerant flow according to suction pressure, which changes the temperature of air crossing the coils. The control's designed applications include multiple-evaporator zoning, in which each evaporator conditions a different zone.
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.