ArborElectro Impedance Tomograph
The ArborElectro Impedance Tomograph is able to detect the size and location of active fungi attacked regions in the trunk non-destructively. It works based on electric resistivity measurements between several sensors around the trunk. The basic measurement principle is that resistivity increases/decreases if there is a change in the concentration of ions between two sensors. Fungi attacks even in very early stages can be determined.
Excitation voltage5-50V, adjustable in 5V steps
Current measurement range0-20mA; 0-400µA; 0-40µA
The length of one basic measurement640ms
Amplifications1, 5, 20, 100
Power supplyBuilt in 5V/5000mAh Li-ion Power Bank
Continuous operation time *Approximately 2 hours
Total weight **6 kg
PC connectionLEMO-USB cable or Bluetooth
Total measurement time of one tree ***45 minutes
Operating temperature range0-40 °C
*on average diameter trees
**without PC, including case, hammers
***one section, including assembly, geometry registration, measurement
GeoPic-32 Multielectrode Resistivity Meter
LEMO-USB connection cable (with 4 needles) to connect the Multielectrode Resistivity Meter to computer
LEMO-USB charger cable (with 3 needles) to charge the Multielectrode Resistivity Meter
4 pcs. electrode connecting cable with 8 crocodile clips on each
50 pcs. stainless steel needles (as electrodes) for measurements; diameter: 1.5 mm, length: 63 mm
5 pcs. screws to fix the Multielectrode Resistivity Meter onto the tree
Electrode remover tool
- Place the resistivity meter onto the tree.
- Measure the circumference and decide the proper shape (circular, elliptic or irregular). Place the electrodes onto the tree at the proper positions or measure their positions. Enter the data to the computer.
- Start the measurement on the computer. During the measurement do not touch the tree. Do not measure other conditions parallel to the resistivity measurement.
- Choose triangulation parameters and run the iterations. The program will calculate the resistivity map of the selected cross section.