- At present, the most accepted method for evaluating the safety and stability of tree roots
- Applying a bending load on the trunk via a cable attached to the tree
- Assess the uprooting stability of the tree
- Or to establish the risk of trunk breakage.
Pulling Test
Package contents
Pulling test – inclino
- Inclinometer (1 or 2 pcs.)
- Base plate with ball head
- Battery box, 9V rechargeable battery
- Battery charger
- Central unit
- Force meter and display
- Serial cables connecting sensors and central unit
- Software on CD
- User’s manual
- Pulling device (optional)
Pulling test – elasto (extension package)
- 2 elastometers in quick mounting house
- Dual elastometer box
- Screw and screwdriver
- Batteries and battery charger
- Serial cables connecting dual elastometer box and central unit
Usage instructions
Make sure you follow all the safety instructions throughout the test!
- Attach the cable to the trunk in the crown of the tree, as high as possible.
- Choose an anchor point in the appropriate direction, about 10 to 15 m from the tree.
- Set up the winch and ropes according to the guide.
- Install the load cell.
- Install the inclinometer sensors.
- Install the extensiometer sensors.
- Connect all sensors to the central unit.
- Switch on the units, and press “Tara” on the load cell.
- Start the Pulling Test software.
- Start measurement by loading the cable slowly and evenly using the winch.
Technical specifications
Cable and winch
Cable length
20 m
Winch
1.6 or 3.2 metric ton
Load cell
Calibrated
yes
Cable-mounted
yes
Capacity
5 T
External display
External display
Connection to central unit
RS232
Sampling rate
1 Hz
Hex key
6mm
Powered by
4 AA size rechargeable batteries
Inclinometers
Sensor
ST-015
Measurement range
±2 degrees
Resolution
0.001 degree
Temperature compensated
yes
Sampling rate
7 Hz
Power source
9V battery
Weather proof, IP65
yes, IP65
Extensiometers
Type
LVDT
Dimensions
30x30x270 mm
Span
250 mm
Sampling rate
1 Hz
Resolution
0.3 μm
Power source
2 pcs. of 9 V batteries
