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 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 circuit board, protected inside a sealed housing made of plastic material, allowing to achieve reliable measurements even in environments with high condensation.
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 or 10 m connecting cable. Power supply 5… 18 Vdc.
The HDWME microphone unit is suitable for long term outdoor monitoring, even in a fixed unattended location. The unit is adequately protected from rain and wind and the heated preamplifier provides stability of acoustic parameters over time and allows to make measurements over a wide range of environmental conditions.
2 axes ultrasonic Anemometers series HD 52.3D…. The instruments of the series HD52.3D… are 2 axes ultrasonic static anemometers for measuring:
– Wind speed and direction, U-V Cartesian components of wind speed
– Relative Humidity and Temperature (optional, code ‘17’)
– Diffuse Solar Radiation (optional, code ‘P’)
– Barometric pressure (optional, code ‘4’)
LP NET 07 measures the net radiation across a surface, from near ultraviolet to far infrared. The Net radiation is defined as the difference between the radiation that reaches the upper surface and the irradiation on the lower surface of the net