Leaf Wetness Sensor


Diseases and infections can destroy an entire crop, but applying fungicides is costly and time-consuming. If you’re deciding when to spray by monitoring leaf wetness with a resistance grid sensor, you’ll have trouble accurately determining wetness duration without a lot of extra work. You need an accurate sensor that is simple to set up with stable, consistent, easy-to-use thresholds like the PHYTOS 31.

A photo of the PHYTOS 31 Leaf Wetness Sensor

Say goodbye to guesswork

The PHYTOS 31 accurately measures both the onset and duration of wetness on a simulated leaf, which in turn predicts when the onset of certain diseases or infections may occur. It’s not only a more accurate instrument, but it’s also the easiest to set up, and when paired with the ZL6 data logger, it gives you access to remote data in real time, making it a smart, simple and straightforward sensing solution.

Request A Quote

Accuracy you can feel secure about

Only the PHYTOS 31 ensures that every water droplet is measured. Unlike conventional leaf wetness sensors, its resistance grid doesn’t use salt-laced latex paint which absorbs water. This gives it extra sensitivity to avoid false positives. So there’s no having to cull data to figure out if the sensor was really wet or not.

A photo of the PHYTOS 31 Leaf Wetness Sensor

METER is trusted by

University of Idaho
Brigham Young University
Temple University
Campbell Scientific

Through sophisticated, yet simple engineering, PHYTOS 31 delivers unmatched accuracy in an easy-to-use sensor. It saves you both time and labor, while reducing your worry and guesswork.

A photo of the PHYTOS 31 Leaf Wetness Sensor

Even detects ice formation
The PHYTOS 31 uses capacitance technology, so it can sense sub-milligram levels of water condensing on the surface, including frost and ice formation. That way you can establish a threshold that not only indicates when the sensor is wet, but also senses how much water there is. This kind of moisture clarity reduces guesswork and worry about accurately predicting disease conditions.

A photo of the PHYTOS 31 Leaf Wetness Sensor with a ZL6 Basic

Simple as nature
When your moisture sensor mimics the energetics of an actual leaf, making measurements is a lot easier. There’s no having to paint your sensor’s non-resistance grid first to get good data. No creating thresholds. And no worrying about lots of wiring. Instead, all you have to do is plug the PHYTOS 31 into the ZL6 data logger, where wet and dry threshold ranges are already programmed in. The result: you save time.

Request A Quote

Feature summary

  • Accurate and easy to use
  • Detect leaf wetness and ice formation
  • Sensitivity without false positives
  •  Mimics a real leaf, so moisture will condense/evaporate as it would on a normal leaf
  • Plug and play capability
  • Use with the ZL6 data logger for remote data collection
  • No need to create thresholds when used with the ZL6 data logger

A photo of the PHYTOS 31 Leaf Wetness Sensor

Request a quote

Fill out the form below to help us pair you with the right expert. We’ll prepare the information you request, then contact you as soon as possible.

icon-angle icon-bars icon-times