Codmetel: HV000071

Compact earth resistance tester

M71 has been developed to measure earth resistance with 2 wires and 3 wires by voltammetric method in compliance with standard IEC/EN61557-1.

This device allows carrying out measurements with a wide measuring range (50kΩ) and an efficient internal automatic compensation of the disturbance effects found on the installations, and it is provided with an ergonomic design with electronic function selector for quickly carrying out the tests. The 2-wire method allows carrying out earth measurement by taking advantage of appropriate external masses as a reference (metal surfaces, tubes, neutral conductor, etc.), which is particularly useful in private environments where, because of logistic problems, it is not possible to use the 3-wire method.

Measuring range 50KΩ
Earth resistance by 2- and 3-wire method  
Compensation of disturbance voltages  
Compensation of test cables  
Protection category  
Detection of disturbance currents on measurement  
LCD display  
Auto Power OFF  
Size (LxWx H) (mm) 240x100x45
Weight in grams (batteries included) 600
  • CEI 64-8 612.6.2
  • IEC/EN61557-1
  • CEI 64-8
  • UNE20460
  • IEC/EN61557-5
  • EMC 2014/30/EU Directive
  • LVD 2014/35/EU Directive
  • DPR 462 del 22/10/2001
  • IEC/EN61010-1
  • EMC: IEC/EN61326