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Circumference Dendrometer 2 (DC2) and Circumference Dendrometer 3 (DC3)

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Circumference Dendrometer 2 (DC2) and Circumference Dendrometer 3 (DC3)

The DC2 and DC3 are the improved version of the DC1. The tension is not applied in a tangential, but in the radial direction. The pressure of the wire cable to the tree is independent of tree size. The data of different tree sizes are comparable. 

The sensor is mounted on a wire cable with very low thermal expansion coefficient at tree. The slide rings reduce the friction between the wire cable and the tree bark. They also decrease the pressure on the tree.

The DC2 and DC3 differs only in its range. DC3 has a larger range. For fast-growing trees, the DC3 is more appropriate.

Please note the essential difference between the various circumference dendrometers.

 

Advantages

■ Suitable for all tree sizes (> 5 cm)

■ Pressure of the wire cable to the tree independent of tree size

■ Automatic adjustment of the tension, sensitive measurements even with very large trees

■ No injury to plants

■ Stability against wind, snow, falling small branches and small fruits

■ Easy installation

■ Easy adjustment by the integrated turnbuckle

 

Disadvantages

■ The data must be converted (free Excel program available)

■ The tree must be roughly circular

 

Delivery

■ Complete with 5 m cable and 1 m wire cable

 

Options / Ordering Information

■ Cable extension (please specify in meters)

■ Extension of the wire cable (please specify in meters)

■ Free Excel program for data conversion

■ Data Logger


Technical specifications



NameCircumference Dendrometer 2 (DC2)Circumference Dendrometer 3 (DC3
Suitable for tree sizeDiameter>5 cmDiameter>5 cm
Range of the sensor15 mm25 mm
Range of dendrometer

With resetunlimitedunlimited

   Without reset 

   for tree diameter of  

   10 cm

   50 cm

   100 cm

9.9 mm in Diameter

6.6 mm in Diameter

5.2 mm in Diameter

16.2 mm in Diameter

11.3 mm in Diameter

9.0  mm in Diameter

Accuracy±2 μm ± 0.12% (CR1000 Logger)±3.3 μm ±0.12% (CR1000 Logger)
Resolution0.3-3.6 μm (dependent on used data logger)0.4-.6 μm (dependent on used data logger)
Linearity2%0.7%
Thermal expansion coefficient of the wire cable<1,4 ×10-6/K
Thermal expansion coefficient of the sensor<0,1 μm/K
Operating conditionsAir temperature: -30 - 40° C, air humidity: 0-100%



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