Control Room and Field Instruments Questions and Answers
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Basics of Loop Powered Devices
What are Loop Powered Devices? A lot of loop setups will utilize an external power supply in order to power the devices which are attached to the current loop. It
Why Use a Current Loop?
A Little Bit of History Before the advent of electronic circuitry, process control was a wholly mechanical endeavor. Facilities used pneumatic control signals where controllers were powered by varying pressures