Campbell Scientific offers two types of leaf wetness sensors to measure the wetness of leaves: surface contact and electrical resistance. Surface contact sensors measure the electrical resistance of a water film on their surface. Electrical resistance sensors imitate the characteristics of leaves and measure the dielectric constant of their upper surfaces.
The LWS, manufactured by METER Environment, can detect small amounts of water or ice on the sensor surface for leaf wetness applications. Because the LWS measures the dielectric constant of...read more
