RKC's LT1 is a back-pressure level switch for upper/lower limit liquid sensing. There are no moving mechanical parts, just a back-pressure sensor and built-in orifice to supply gas. A single tube handles liquid level alarm and sensing. The LE100/110 high-accuracy linear meter series can measure liquid levels in single and multiple chemical baths or as a pressure sensor. The built-in back-pressure sensor in the 1/16th DIN microprocessor can measure levels up to 1,000 mm. The front panel display has two digital readings for actual level and set value, up to eight level set points, and four push buttons for setting the unit. A single-touch setup can do empty adjustment, span adjustment, and automatic specific gravity computation, and a built-in linearizer compensates for variations in tank shapes. The meters display units such as millimeters, percent, liters, and milliliters. They have a repeatability of ± 0.3 percent of full span, and a 0.2-second sampling time.
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.