The K4106 is a 2/3/4-wire digital Earth resistance/Earth Resistivity Tester equipped with a microcomputer and can measure earth resistances and calculate earth resistivity's (?), ussing the “Wenner ” 4 pole method. This instrument is ideal for Earth measurements also in large Earthing systems because it uses a considerable test current of 80mA (max) yielding a high resolution of 1m? on 2? range.

Using a dot matrix display, complete with backlight, several sub results and parameters can be displayed., these include Resistance of the Auxiliary Earth Spikes, Frequency of Test Current, Voltage and Frequency of Interference (noise), Residual Resistance RK etc. A "RK" function is available to cancel the residual resistance on the test leads. Voltage values and frequencies are displayed when the Series Interference voltage (AC) exist. Warnings are displayed on the LCD when auxiliary earth resistances are too high and may result in inaccurate measurements.

The Earth Resistivity measurement is useful for soil surveys to establish the optimum earth electrode system design and site, to avoid extra cost of re-working electrode installations. It can also be suitable for geological investigations