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Other Weather Sensors | |
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| Leaf Wetness Sensors | The job of a leaf wetness sensor is to act as an artificial leaf, signalling when condensation is like to form on a leaf and how much. Leaf wetness sensors are typically manufactured using a capacitance sensor element, which employs a set of copper tracks on a small printed circuit board (PCB). Condensation forming on the surface of the board, adds to the capacitance (water as a much higher dielectric constant and hence capacitance than air) which changes the frequency of an oscillator circuit. The change in frequency is then detected and converted to a measurement of the percentage wetness: 0% = dry, 100% is heavy condensation. View LWS01 Brochure. |
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