White Paper - Differences between the BTD-300 and an electric field mill

The Biral Thunderstorm Detector BTD-300 provides real-time detection and ranging of thunderstorm activity within 83 km (51 miles). The sensor bases thunderstorm warnings on the detection and range of lightning flashes, as well as the presence of strong electric fields and electrically charged precipitation occurring at the installation site. The strong electric fields and charged precipitation provide the ability to warn of the potential for nearby lightning activity before the occurrence of the first flash.