Kit A DynaTree – Dynamic Tree stability

DynaRoot Setup A 

x1    Portable pneumatic  pole   (1 Person use)

For the anemometer,no special assembly of the pole itself is needed. Only the holding ropes which should be fixed correctly. The packed pole is about only 2 m long, but it can be erected to 10 m height. Both the extending and the collapsing of the tower can be done alone.

Ultrasonic anemometer

x1 Anemometer; an instrument for measuring wind velocity at or near the tree to be evaluated. The closer to the better, but, depending on wind velocity, DynaRoot may provide reliable data even with measurements taken several kilometres/miles away. The anemometer provides wind velocity data of sufficient frequency.  Ideally, the anemometer should be clear of buildings or other objects that may

obstruct the wind, at a height of at least 10 m.

• Dual-axis ultrasonic wind velocity meter
• Sampling rate: 1 Hz
• Measurement range: 0-150 km/h
• Accuracy: 0.2 km/h
• Integrated GPS
• Data storage capacity: 8 GB (SD card)
• Best location: open field, 10 m height, undisturbed by buildings or other large objects
• Completely weatherproof

x3 Inclinometer; which is fixed to the buttress of the test tree and measures the inclination of the trunk in two different directions to provide very accurate record of the trees movement in both the X & Y axis.  This device provides an accurate record of the tree’s inclination at sufficient frequency to identify excessive or sudden movement.

• Measurement range ± 2 degrees
• Resolution: 0.001° degree
• Temperature compensated
• Sampling rate: 10 Hz
• Integrated GPS
• Data storage capacity: 8 GB (SD card)
• Mounted by a single screw
• Operating voltage and current: 12V, 20 mA
• Completely weatherproof, IP65

1  Elastometer with sensors – An instrument attached to the trunk for measuring the micro elongation of the trunk.

3. Evaluation software

The data, recorded by the Anemometer & Inclinometer onto memory cards over a period of several hours, are combined within the evaluation software, thanks to a GPS time signature. The software breaks the data down into shorter intervals and calculates the statistical parameters for each interval

that are used for the tree stability evaluation.

• Simple yet efficient software for determining the safety factor
• Automatic merging of wind velocity and inclination data
• Diagram, critical wind pressure, correlation coefficient and safety factor calculation
• Runs under MS Windows.

Training will be required, cost subject to user experience and number of trainees and location – A bespoke quotation will be provided.

Resources

DynaRoot and DynaTree Evaluation System Manual

Download Here