UL 1604 is obsolete and has been superceded by ANSI/ISA 12.12.01. The end of life date for 1604 was July 31, 2012. That being said, this is a good overview of the requirements for either standard. Anyone working with this type of product should also get familiar with the IEC 60079 series standards. They define the hazardous locations (known as explosive atmospheres or ATEX) requirements for europe. IEC60079-0 describes the basic requirements, and the others describe varios protection methods.
What should be the perception of a product’s real-world performance with regard to the published spec sheet? While it is easy to assume that the product will operate according to spec, what variables should be considered, and is that a designer obligation or a customer responsibility? Or both?
Biomimicry has already found its way into the development of robots and new materials, with researchers studying animals and nature to come up with new innovations. Now thanks to researchers in Boston, biomimicry could even inform the future of electrical networks for next-generation displays.
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