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
Limits
Not suitable for diameter greater than 20 cm
Delivery
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
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 <0,1 µm/K
Operating conditions Air temperature: -25 to 70 °C, air humidity: 0 to 100%
