Ice detector

An ice detector is an instrument that detects the presence of ice on a surface. Ice detectors are used to identify the presence of icing conditions and are commonly used in aviation, unmanned aircraft, marine vessels, wind energy, and power lines.
Ice detection can be done with direct and indirect methods. Direct methods identify the presence of atmopsheric icing conditions, i.e. the presence of supercooled water droplets. Indirect methods infer the presence of icing conditions by either detecting ice accretions on a surface, or by changed vehicle performance behavior.