The DRO Dendrometer is designed for continuous measurement of roots, aquatic plants and creepers for diameters of 0-5cm.
A soft, light resistant rubber coating protects the whole sensor from ingress of moisture, the device is waterproof. A metal clamp protects the sensor from excessive pressure exerted from overlying soil.
The specific weight of the unit is similar to that of water. When used underwater, no extra load is charged on target plants by the floating instrument. It is easy to install and maintenance free.
|Suitable for plant size||Diameter <5 cm|
|Range of the Sensor||11 mm|
stable offset ±4.5%
Logger dependent, e.g.:
CR1000: ± (0.04% +4.4 μm)
|Resolution||0.2 – 2.6 μm (dependent on data logger used)|
|Thermal expansion coefficient of sensor||<0.2 μm/K|
|Operating Conditions||Temperature: -25 to 70°C,
in and on soil, under water