NRG Heated Sensor Response Characteristics

Download pdf (148 KB)

The NRG IceFree3 and Hybrid XT anemometer models were designed to measure wind speed in icing environments, and contain active heating. During the winter season, standard (unheated) anemometers will periodically slow or freeze, and measurements from the heated IceFree3 or Hybrid XT sensor become the primary resource assessment data source. The operational characteristics of the heated sensor models differ from a standard cup anemometer, and these operational differences may be reflected in the collected measurements when using both heated and standard sensors in a particular wind assessment project. This application note discusses differences and provides a guidance on how to use data from the heated sensor when the standard anemometer is frozen.