Product Information

SF sap flow sensor

This sensor for the continuous measurement of the water absorption of trees operates according to the Granier principle. This measures the temperature difference between two needles that are arranged on top of each other, whereby the top needle is heated by a constant energy supply. The temperature difference can be converted to the water flow using an empirical formula.Two models are available depending on the degree of accuracy required:

 

  • SF-G, classic Granier sensor with 2 needles
  • SF-L, improved Granier sensor with 4 needles and a considerably greater degree of accuracy

 

The needles are available in 3 different lengths so they can be ideally adapted to the tree size. The energy supply for the upper needle is provided by a CCS power supply for up to 3 sensors. An external data logger is required to record the data. The sensors are supplied with 5 m of cable, weather protection cap and aluminium tubes. The cable can be extended to up to 20 m on request.

 

Advantages

  • Can be used for trees with diameters of at least 2 cm
  • Sensor can be reused

 

 

 

Technical Specifications

Technical Specifications

SF-GSF-L
Suitable for stem diameter:2 … ∞  cm15 … ∞  cm
Needle dimension:Ø: 1,5 mm
L: 33, 43, 63 mm
Ø: 1,5 mm
L: 33, 43, 63 mm

 

 

Order Numbers + Accessories

 

Ordering Details:

Art.-Nr.:  170050

SF-G sap flow sensor
with 2 needles

Art.-Nr.:  170053SF-L sap flow sensor
with 4 needles

 

 

Downloads

Hauptsitz
Müncheberg
Tel.: +49 (0) 33432 - 89 575
Fax: +49 (0) 33432 - 89 573

Niederlassung Süd
Tel.: +49 (0) 8161 - 23 46 441
Fax: +49 (0) 8161 - 23 46 443