LWS CAMPBELL | Alldatasheet
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SCIENTIFIC NS \\WHEN MEASUREMENTS MATTER Overview 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 the sensor’s upper surface, it can detect the presence of water or ice anywhere on the sensor’s surface. Benefits and Features ) Imitates characteristics of a leaf ) Does not require painting or calibration of individual sensors Technical Description The LWS measures the dielectric constant of the sensor’s upper surface. This method allows the sensor to detect the Specifications Measurement Description Dry, frosted, wet Signal Type/Output Analog voltage Measurement Time 10ms Power 25Vdc@2mAto5Vdc@7 mA Output 250 to 1500 mV (millivolt reading relates to moisture state) N (R = LWS Leaf-Wetness Sensor Sensitive yet Durable Compatible with most Campbell Scientific dataloggers The LWS is designed to be deployed either in the canopy or on a weather station mast. Two holes in the non-sensing portion of the sensor body are provided for attaching the sensor to a pole or branch via twist ties or with 4-40 bolts. Note: The LWS was previously ordered as the LWS-L. ) Detects trace amounts of water or ice on the leaf surface presence of water or ice anywhere on the sensor's surface. Operating Temperature -40°to +60°C Range Life Expectancy 2+ years (continuous use) Painting Does not require painting. Dimensions 120x58x08cm (47x23x03 in) Weight 0.14 kg (5 0z) with 457 m (15 ft) cable For comprehensive details, visit: www.campbellsci.eu/iws ‘ CAMPBELL 80 Hathern Road, Shepshed, LE12 9GX UK | +(0)1509 828888 | sale@campbellsci.couk | www.campbellsci.eu SCIENTIFIC AUSTRALIA | BRAZIL | CANADA | CHINA | COSTA RICA | FRANCE | GERMANY | INDIA | SOUTH AFRICA | SPAIN | THAILAND | UK | USA Campbell Scientific, Ltd. | 07/