Radar level measurement technology can be BROKEN down into two different categories; Pulsed and Frequency Modulated Continuous Wave (FMCW). An advantage with Pulsed Technology is that it REQUIRES less processing power. Therefore most two-wire gauges use this technology. An advantage with FMCW is that higher ACCURACY can be achieved but more processing power is required and therefore FMCW-radars are TYPICALLY four-wire. In Pulsed transmitters the level measurement is a function of the time taken from the radar signal to travel to the surface and back. In FMCW gauges the transmitter constantly emits a swept frequency and the distance is calculated by the difference in frequency of emitted and received signal.

Radar level measurement technology can be broken down into two different categories; Pulsed and Frequency Modulated Continuous Wave (FMCW). An advantage with Pulsed Technology is that it requires less processing power. Therefore most two-wire gauges use this technology. An advantage with FMCW is that higher accuracy can be achieved but more processing power is required and therefore FMCW-radars are typically four-wire. In Pulsed transmitters the level measurement is a function of the time taken from the radar signal to travel to the surface and back. In FMCW gauges the transmitter constantly emits a swept frequency and the distance is calculated by the difference in frequency of emitted and received signal.