Vertical Dendrometer (DV)

Vertical Dendrometer (DV)The Vertical dendrometer is designed to determine vertical changes (not growth) of trees continuously. Tree stems and their respective sections vary in length and curvature, a

  • Product Name:Vertical Dendrometer (DV)
  • Item No.:DV
  • Manufacturers:Ecomatic
  • Country of Origin:Germany

Vertical Dendrometer (DV)

The Vertical dendrometer is designed to determine vertical changes (not growth) of trees continuously. Tree stems and their respective sections vary in length and curvature, according to water status (short- to mid-term) wind direction and wind speed (short-term to permanent), snow and fruit load (mid-term to permanent), unbalanced growth or loss of crown parts (long-term to permanent). Vertical changes are a valuable measure to assess water status and static characteristics, such as mechanical stress-strain relationships and mechanical stability of trees. In order to disentangle the different causes (water status, mechanical stress), parallel measurements with three vertical dendrometers, oriented in three different cardinal directions are necessary.

 

Advantages

  • Assessment of mechanical stress-strain relationships

  • Suitable for large trees (diameter>8 cm)

  • Robust installation, resistant against wind, snow, falling branches and fruits

 

Limits

  • Trunk is injured by drilling (the damage can be minimized by tree resin)

  • Suitable only for larger trees (diameter>8 cm)

 

Delivery

Complete with 5 m cable

 

Options / Ordering Information

  • Cable extension (please specify in meters)

  • Installation tools (tree resin, hand drill)

  • Data Logger


Name         Vertical dendrometer (DV)

Suitable for tree size         Diameter >8 cm

Range of the sensor         11 mm

Accuracy           ±1.5 µm ± 0,12% (CR1000 Logger)

Resolution       0.2-2.6 µm (dependent on used data logger)

Linearity          1%

Thermal expansion coefficient of the sensor          <0,1 µm/K

Thermal expansion coefficient of wire cable     

Operating conditions    -25 to 70 °C air temperature, 0 to 100% relative air humidity