LWS
LWS
OrderableConfigurableLeaf-Wetness Sensor
Best for general applications. No painting required.
Pricing
Configuration
Sign in for option pricing- w/5m (17ft) per Sensor -PF w/Ferrules on Wires-5m
- w/10m (33ft) cable per sensor -PF w/Ferrules on Wires-10m
- w/15m (50ft) cable per sensor -PF w/Ferrules on Wires-15m
Select a configuration to add to your quote
- Model:
- LWS
- Item Number:
- 45342
- Warranty:
- 1 year
- Lead time:
- 30 days
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.
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.
Key Advantages
Compatible with most Campbell Scientific data loggers
Benefits
- Imitates characteristics of a leaf
- Does not require painting or calibration of individual sensors
- Detects trace amounts of water or ice on the leaf surface
Specifications
- Measurement Description
- Dry, frosted, wet
- Signal Type/Output
- Analog voltage
- Measurement Time
- 10 ms
- Power
- 2.5 Vdc @ 2 mA to 5 Vdc @ 7 mA
- Output
- 250 to 1500 mV
(millivolt reading relates to moisture state)
- Operating Temperature Range
- -40° to +60°C
- Life Expectancy
- 2+ years
(continuous use)
- Painting
- Does not require painting.
- Dimensions
- 12.0 x 5.8 x 0.8 cm
(4.7 x 2.3 x 0.3 in.)
- Weight
- 0.14 kg
(5 oz) with 4.57 m (15 ft) cable
Related Resources
Case Studies

Jamaica: Hurricane Melissa
Monitoring weather conditions for a mangrove ecosystem and a hurricane
Oyster Bay near Falmouth, Jamaica
April 2, 2026
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Colombia: Fighting Fungus on Roses
Study of growing conditions of roses, gathering data for battling fungus growth
Bogota Savannah, Colombia
March 14, 2011
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Zambia: Strengthening Climate Resilience
Harnessing climate and hydrometeorological data to build climate change resilience
Zambia (multiple locations)
December 6, 2023
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