Diameter dendrometer rugged (DDW)

The DDW is the ruggedized version of the DD-L dendrometer type. Additionally to the features of the simple DD-L version, the DDW dendrometer is modified for the use under especially harsh environmental conditions. A soft, light resistant rubber coating, protects the whole sensor from ingress of water and solid particles.

Advantages (additionally to DD-L type)

  • Suitable for diameter 3-20 cm
  • Suitable for measurements underwater, under snow cover and under heavy exposure to dust (e.g. volcanic ashes or desert dust)
  • Suitable under exposure to corrosive seawater spray
  • Plant size specific ordering possible within the 3 to 20 cm diameter range


  • Not suitable for diameter greater than 20 cm


  • Complete with 5 m cable
  • Fixing materials and installation tools (wrench)

Options / Ordering Information

  • Cable extension (please specify in meters)
  • If necessary, different frame size
  • Data Logger

Technical specifications

Name Rugged Diameter Dendrometer Large (DDW)
Suitable for plant size Diameter 3-20 cm (range extendable, on request)
Range of the sensor 11 mm
Accuracy ±1.5 µm ± 0.12% (CR1000 data logger)
Resolution 0.2-2.6 µm (dependent on data logger used)
Linearity 1%
Thermal expansion coefficient of the sensor <0,2 µm/K
Operating conditions Air temperature: -25 to 70 °C, air humidity: 0 to 100%