In the fields of industrial automation and process control, it’s important to be able to measure things accurately and talk to each other reliably. Modern field instruments, especially those that use the HART (Highway Addressable Remote Transducer) protocol, are much more advanced than traditional 4–20 mA transmitters. HART devices are “smart instruments” that can send … Continue reading Explained: The Four Main Process Variables (PV, SV, TV, QV) in HART Transmitters – Complete Guide for Instrument Engineers