NAMUR NE43 Made Simple – What Every Engineer Should Know

Wondering what happens when your pressure transmitter reads too low or too high? In this video, we break down the concept of Normal Operating Range, and explore under-range, over-range, and NE43 diagnostic signaling in 4-20 mA transmitters. Learn how smart transmitters use milliamp signals to communicate warnings and faults — and why your control system listens even when things go wrong. ✅ Great for automation engineers, instrumentation pros, and control system designers. 🔧 Topics Covered: Normal Operating Range (4–20 mA) Under-range & Over-range behavior NE43 standard and transmitter fault indication