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HD3901-LEAF WETNESS SENSOR

Make:  Delta Ohm     Model: HD3901
✅ HD3901 leaf wetness sensor detects the presence of condensation on its sensitive surface and has been designed to reproduce in an extremely accurate way the thermodynamic behaviour of a leaf.
✅ Measurand : Leaf Wetness
✅ Sensor Type : Capacitive
✅ Signal Output : Two analog outputs (one output for each of the two sensitive surfaces).
✅ Supplied With : Cable, Factory test/ Calibration Certificates.
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The HD3901 leaf wetness sensor detects the presence of condensation on its sensitive surface and has been designed to reproduce in an extremely accurate way the thermodynamic behaviour of a leaf. The leaf wetness degree is a basic information in the agricultural and floriculture fields to determine the most appropriate phytosanitary treatment to prevent mould and fungal infections in general that can affect the plants and crops in the presence of condensation on the leaves.

The double sensitive surface allows to determine the wetness degree both on the top and on the bottom of the leaf, important feature to get accurate indications, being that the two sides of the leaf have different drying times. In order to ensure a long duration of the sensor, the surface of the sensor is specially treated to resist to the atmospheric agents and to the chemical agents present in pesticide products.

The sensor is already supplied with factory-calibration and does not require any calibration by the user. The output is 0.5 … 3 V analog voltage with a fixed 5 (HD3901.5) or 10 (HD3901.10) m connecting cable. Power supply 5… 18 Vdc.

Make

Delta ohm

Model

HD3901

Weight (Mass)

About 100 g (including the 5 m cable)

Dimension

61 x 115 x 11 mm (excluding cable). Width of the sensor 1.6 mm

Measurement Principle

Capacitive

Outputs

Analog (0.5…3 V)

Power Supply

5…18 Vdc

Accuracy

± 5%

Power Consumption

< 1 mA

Measuring Range

0…100% of leaf area wetness

Operating Environment

-30…+60 °C

Protection Degree

IP67

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