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Root Dendrometer
Relax the screw of pipe clamp slowly and move the bracket so that the sensor rod is
pushed in by about 3 mm. Fix the pipe clam screw again.
.
7. Technical Specifications
Name of the Sensor
Use area
Suitable for plant size
Range of the senor
Resolution
Accuracy
Temperature coeffi-
cient of the sensor
Linearity
Environment
Weight of the sensor
Power supply
Material
Cable length
Root Dendrometer
Type DRO
For measuring diameter growth of roots and aquatic plants
Root diameter 0-2 cm (>2 cm on request)
11 mm
The resolution of the sensor itself is infinite. The resolution of
readings is determined by connected data logger, e.g.
CR1000: 1.5 µm
Dendrometer logger DL18: 0.2 µm
Dendrometer dependent:
Max. ± 4.5% of reading (stable offset)
Dependent on the connected data logger, e.g.:
CR1000:±(0.04% of reading+4.4µm)
Dendrometer logger DL18: ±0.1%
<0.2 µm / °C in the whole range
<1%
In soil, under water or snow condition: -25 to 70C air tempera-
ture, 0 to 100% relative air humidity
50 g without cable
Stabilized Vex 0.5 – 10 VDC, power consumption practically zero
Stainless steel and Aluminium
5 m, extendable up to 100 m
4
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