The Scintec SLS20-A Scintillometer measures turbulence, heat flux and momentum flux by purely optical means. In combination with other meteorological sensors the system can determine latent heat flux or evaporation.
The model SLS20-A has built-in automatic beam steering which permits operation when manual beam alignment is undesirable or difficult. It may also be useful when the pointing stability of the mounting is poor.
Each SLS Series Scintillometer consists of a laser transmitter pointing at a receiver. Temperature fluctua-tions in the air cause variations of the light intensity captured at the receiver. The scintillometer evaluates such variations to yield turbulence information.
The line averaging over the optical path results in spatially representative
data and outstanding temporal resolution – a critical edge over data collected from conventional point sensors. The scintillometer provides high sensitivity and accuracy – without mechanical flow distortion or any moving part.
The proprietary displaced-beam technique of the SLS Series Scintillometers opens up access to mechanical turbulence quantities (momentum flux, kinetic-energy dissipation rate) without need to feed in any external wind data.