Wednesday, 12 August 2015 07:18 Written by 
Rate this item
(0 votes)



The MTD20KWR digital earth tester allows for the measurement of Earth Resistances and Soil Specific Resistivity, and also the spurious voltages caused by parasitic voltages present in the soil.

This equipment is suitable for fast and easy measurement of the grounding resistance in house and industrial buildings, hospital installations, lightning rods, antennas, substations, etc. Soil resistivity measurement allows for soil stratification in order to optimize the most complex grounding systems engineering.

Its state-of-the-art system of active and passive filters provides it with high immunity to electric interferences, making it possible to obtain reliable measurements even in the presence of spurious voltages, such as the ones that can be found in some urban areas and near primary substations.

A 1,470 Hz internal generator injects alternated current on the soil through an auxiliary rod. The voltage generated over the earth resistance is measured by the apparatus, and the resistance value is evaluated. The test current is automatically regulated.It has abnormalities indications on the display which advises the operator when the generated current is not enough to carry out reliable measurements.Because of its wide range of measurement (from 0.01 Ω up to 20 kΩ), this equipment allows for reliable testing in all kinds of soils, including those that offer very high resistivity.

This earth tester is supplied with a rechargeable internal battery. The smart charger is microprocessor-controlled, and can be powered from a 12 V car battery (or a similar one).

It has a sturdy, easy and safe to carry cabinet, with IP65 protection level (closed lid). It is suitable to work under adverse geographical and environmental conditions, with extreme temperatures in cold or tropical regions and in high mountain areas, showing a reliable performance in the field.


  • Digital and automatic
  • Earth resistance measurement
  • Ground resistivity (Wenner’s method)
  • Spurious voltage measurement
  • High spurious voltage rejection
  • Indication of anomalies in the current circuit
  • 0.01 Ω resolution
  • Up to 2 kΩ resistance range
  • Rechargeable NiMH battery
  • IP65 rated (with closed lid)
  • Graphic display (128 x 64 px)


Specifications   MTD20kWr
Measurement ranges

Resistance: 0-20 kΩ

Tension: 0-200 V~.


Resistance measurements:

± (2% of the measured value ± 2 digits

Voltage measurements:

± (2% of the measured value ± 2 digits)

Reading resolution

0.01 Ω in the resistance measurement. 

0.1 V in the voltage measurement.

Output power and current The output power is less than 0.5 W, and the output current is limited to less than 10 mA (Peak to peak).
Battery charger AC adapter 12 V - 1 A
Read 12669 times Last modified on Monday, 22 January 2024 11:16
More in this category: EM 4058 »