How do you get disparate machines to communicate? For decades, that has been a costly challenge for anyone operating an oil refinery, pulp mill or processing plant. Sensors measuring temperature, pressure and dozens of other things that govern how smoothly a process is running have long been linked via expensive wiring, if at all. Installing new sensors has traditionally called for retrofitting a factory with new wiring whose installation can cost 10 times what the measurement gauge itself does. Many new devices can't be wired into a central system because of the way factories are laid out, so data are often...
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