The SF-G sensor is the typical Granier sensor and consists of two needles

Advantages

• Suitable for tree diameter >2 cm
• Reusable sensor

Limits

• Temperature difference between the needles is superimposed by natural vertical temperature gradients within the sap wood (up to + / -2.5 ° C). This occasionally leads to unpredictable errors of over 50% in sap flow calculations.
• Sap flow at night cannot be measured. Due to unpredictable temperature overlays, night values are wrongly set to zero.

Available Models

• SF-G 20/33, depth of installation 20-33 mm
• SF-G 20/43, depth of installation 20-43 mm
• SF-G 20/63, depth of installation 20-63 mm

Delivery by Standard Version

• Sensor with 5 cable, weatherproof cap, Aluminium tubes

Options / Ordering Information

• Cable extension (please specify in meters, but max. 20 m)
• CCS power supply (one CCS is enough for up to 3 SF-G sensors)
• Installation tools
• Data Logger

Technical data

Name	Sap Flow Sensor Type SF-G
Needle size	Diameterr 1.5 mm, Length 33, 43, 63 mm
Cable length	5 m, extendable to 20 m
Suitable for tree size	Diameter> 2 cm
Power supply	A CCS supplies up to 3 sensors and consumes 1 W (12 V x 84 mA DC, stabilized)
Output	0 µV bis 1000 µV DC