Photoelectric duct smoke detector
The InnovairFlex D4120 4-wire photoelectric duct smoke detector by System Sensor.
The System Sensor InnovairFlex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. This unit senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 ft per minute, temperatures of –4 to 158 F, and a humidity range of 0% to 95% (noncondensing). For applications that require supply and return detection, InnovairFlex has a 2-to-1 sensor to power board capability using the D4120 and the D4S. This capability eliminates the need to run power to a second power board for these applications, significantly reducing installation time and costs. It also reduces maintenance and testing costs by enabling the testing of two sensors from a single location.
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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.