Leaf Wetness Sensor




Leaf Wetness Sensor LWS-31™ indicates the presence or condensation or water droplets on leaves or surfaces.

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SKU: LWS-31 Category:



Leaf Wetness Sensor LWS-31™ indicates the presence of condensation or water droplets on leaves or surfaces.

The device can attached to a stem or branch within the canopy. Alternatively, the sensor can be attached to a stake or pole and indicate rain or dew conditions.

LWS-31 is manufactured in the USA by METER Group.

LWS-31 can be attached to Dyacon CM-1™ Weather Station Control Module, Data can be viewed remotely on DyaconLive.

The capacitance/frequency technology of LWS-31 provides an immediate response to droplet presence, there is no absorption delay.

Manuals & Software


LWS-31 Data Sheet

Key Features

Construction: LWS-31™ is fully sealed for direct exposure to rainfall.

A 5 m cable is resistant to soil and sun exposure.

Interchangeability: Sensors may be interchanged and replaced by the user without calibration.

Data: Analog sensor output is compatible with a wide range of instruments. Water content is proportional to analog output.

Installation: LWS-31 is simply attached to a stem or post using the two mounting holes.


Leaf wetness may be used to detect:

  • Irrigation operation
  • Rain
  • Condensation
  • Herbicide or pesticide coverage
  • Roadway surface conditions
  • Frost formation


Measurement Time10 ms
Output300 mV to 1250 mV

*Specifications are based on manufacturer’s information.

Input2.5 VDC – 5.0 VDC, 10 mA typical
Current8 mA at 5VDC <2 mA on Dyacon CM-1

Dimensions12 cm x 5.8 cm x 0.8 cm (4.7” x 2.3” x 0.3”)
Cable5 m Shielded

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