S-LWA-M003 HOBO Leaf Wetness Sensor
Leaf Wetness Sensor.
The S-LWA-M003 Leaf Wetness smart sensor is designed to work with the HOBO® Weather Station or Micro Station Loggers.
The smart sensor has a plug-in modular connector that allows it to be added easily to a HOBO Weather Station.
All calibration parameters are stored inside the smart sensor, which automatically communicates configuration information to the logger without the need for any programming, calibration, or extensive setup. Unlike other leaf wetness sensors, the HOBO Leaf Wetness smart sensor does not require any painting or coating—it is ready to use.

The Leaf Wetness Smart Sensor provides accurate leaf wetness data in a number of growing and research applications. The sensor is ready to use and does not require any painting or coating. It uses a capacitive grid that is less sensitive to surface residues than resistive grid-based sensors, and comes preconditioned for consistent measurements between sensors and for long-term stability. Along with a 3-meter cable, a mounting bracket is included so the sensor can be easily positioned to mimic the wet-dry characteristics of the plants being studied.
Environment: The S-LWA-M003 Sensor is for use in Outdoor environments
Measurements: The S-LWA-M003 Sensor supports the following measurements: Leaf Wetness
- Measurement range: 0 (dry) to 100% (wet)
- Operating Range: -40°C to 70°C, (-40°F to 158°F)
- Repeatablility: ± 5%
- Resolution: 0.59%
- Stability: < ± 5% per year
- Interchangeability between sensors (over the range 10-90%): ± 10%
- Measurement Averaging Option: No
- Housing: No coating required
- Sensor Type: Capacitive Grid
- Dimensions:
- Sensor plate: 4.7 cm x 5.1 cm (1.8” x 2.0”)
- Tube: 12.2 cm length x 1.8 cm diameter (4.8” x 0.7”)
- Cable length: 3m (9.8’)
- Approximate Weight: 127 g (4.5 oz) for sensor, and 290 g (10.2 oz) with mounting bracket
- Mounting Bracket: 20 cm long (8”);Sensor can be positioned at any angle between 0 and 90 degrees (vertical)
- Number of Data Channels: 1
For mounting on Onset tripods or masts 3.2 cm to 4.1 cm (1 1/4” to 1 5/8”), Cross Arms (Part # M-CAA or M-CAB), or flat surfaces. U-bolt and tie-wraps included.
- The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)
- The Sensor measures:
- LEAF WETNESS
- Output Signal:
- HOBO Smart Sensor
- Cable Length:
- 1.8 m
- Sensor for use in:
- Outdoor
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