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PHYTOS 31 Leaf Wetness Sensor

Updated:2025-03-13

Brand: METER
Model: PHYTOS 31
Description: 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
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Product Details

PHYTOS 31 Leaf Wetness Sensor Description：

User's Manual

Say goodbye to guesswork

The PHYTOS 31 lets you know leaf wetness in no uncertain terms. It 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, it’s also the easiest to set up, making it a simple and straightforward solution to several problems.

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.

Simple. Accurate. Simply accurate.

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.

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.

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.

Feature ：

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

PHYTOS 31 Leaf Wetness Sensor Specification：

Physical Specifications	Dimensions	Length: 12.0 cm(4.7 in) Width: 5.8 cm (2.3 in) Height: 0.8 cm(0.3 in)
	Operating Temperature Range	Minimum:-40.00°C Typical: NA Maximum:60.00°C
	Operating Temperature Range	NOTE:Sensors may be used at higher temperatures under certain conditions;
	Cable Length	5 m(standard) 40 m (maximum custom cable length)
	Cable Diameter	0.165 +.004 (4.20 +.10 mm) with min. jacket of .030(.76 mm)
	Connector Types	3.5-mm (stereo) plug, or stripped and tinned wires
	Stereo Plug Connector Diameter	3.50 mm
	Conductor Gauge	22 AWG/24 AWG drain wire
Electrical and Timing Characteristics	Supply Voltage	Minimum: 2.5 VDC Typical: NA Maximum: 5.0 VDC
	Settling Time	10 ms
	Output	300-1,250 mV (depends on excitation voltage)
	Data Logger Compatibility	Dataacquisition systems capable of switched 2.5-5.0 VDC excitation and single-ended voltage measurement at greater than or equal to 12-bit resolution.
Other	Compliance	EM ISO/IEC 17050:2010 (CE Mark)