Calorimetric-principle flow switches use the cooling effect of a flowing fluid to detect flow rates of liquids and gases. These units have no moving parts that can break off or stick, and compensate for temperature changes in the fluid stream. The switches have a temperature response rate that allows the switch to accurately monitor the flow of cooling water to welding equipment, transformers, and other applications that experience rapid temperature changes.
efector Inc., 805 Springdale Dr., Whiteland Business Park, Exton, PA 19341, FAX (610) 524-2010.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
Highly regarded engineer and physicist Ransom Stephens speaks with Design News about his extensive science and engineering background, the serious yet funny study of neuroscience, and how one primes their brain for innovation.
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