HART field communicators are handheld units which operate via Highway Addressable Remote Transducers (HART). HART field communicators are capable of communicating over legacy analog 4-20 mA current loops, which means they can transfer signals between analog and digital systems. Due to the prevalence of systems with 4-20 mA cabling installed around the world, HART is sought after as a transition device from analog to digital.
These field communicators are used to communicate with process instruments so that configuration and calibration are simplified. HART technology is implemented in process and instrumentation systems in everything from small-scale automation environments to complex industrial settings; its relevance over the years will most likely not wane, as the need for integrating analog systems into a digital world persists.
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