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◆ Heat-pulse sap flow sensors (just as with TDP sap flow sensors) also work on a temperature-based measuring principles.◆ The difference however, is that HP sap flow sensor does not require continuous heating, but only a short heat pulse of a few seconds is applied.◆ Depending on the measurement method used, the direction-dependent propagation as well as...
Manual sap press for in-situ plant sap extraction, allowing you to monitor soil nutrition.• Made of high-quality, non-corrosive metal.• Includes cleaning device.
Typical Granier Sap Flow Sensor with two needles. For trees with a diameters >2 cm.Sap flow sensors are used to continuously measure water uptake in trees and woody plants.The SF-G range corresponds to the classic two-needle model developed in 1985 by André Granier.It requires use of the CCS to feed the current and Data Logger Data Logger DL-18.
Constant Current Source (CCS) for 3 Sap Flow Sensors (SF-L or SF-G or mixed). One CCS supplies up to 3 sensors and consumes 1 W (12 V x 84 mA DC, stabilized).
Improved Granier Sap Flow Sensor with four needles and a much higher accuracy. For trees diameter >15 cm. It requires use of the CCS to feed the current.