PHYTOS 31 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.

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.

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.

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.

TECHNICAL SPECIFICATIONS

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
NOTE: Sensors may be used at higher temperatures under certain conditions; contact Customer Support for assistance.

Cable Length:
5 m (standard)
40 m (maximum custom cable length)
NOTE: Contact Customer Support if a nonstandard cable length is needed.

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:
Data acquisition 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)
Prop 65 warning
GSA
View GSA details