Posts Tagged isolation
LUT400 universal 4-20mA analog output gets rid of the ground loop
Posted by danweise in 4-20mA, HART, Installation, Level, Level Transmitters, Ultrasonic on August 16, 2013
The Problem
Before I talk about the value of a universal 4-20mA analog output on a level controller, let me explain why anyone would care. It’s all about ground loops.
Since the early days of electronic instrumentation, way back when, even before cell phones or PCs, instrument people struggled with ground loops that create an offset error, drive the signal off scale, or burn up an analog circuit.
