Sap Flow Sensor
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Sap flow sensor is an instrument for continuous
measurement of water uptake by trees. The basic principle was developed
by Granier. The temperature difference between two needles inserted in
sap wood is measured, the upper needle is heated with a constant supply
of energy. The temperature difference can be converted with an empirical
formula to water flow density.
Available models ■ SF-L, Improved Granier sensor with four needles and a much higher accuracy |
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