MI 3242 MicroOhm 2A

Continuity testers

MI 3242 MicroOhm 2 A is a portable low resistance ohmmeter used to measure low resistances of switches, relays, connectors, bus bars, power distribution cable joints, motor & generator winding, power transformers, power inductors, rail track joints, wire and cable resistance, welding joints for industrial application, etc., with test current up to 2 A.


Standards applied

IEC/EN 62271

  • IEC/EN 62271 series
  • IEC/EN 62271-1
  • IEC/EN 62271-100

ASTM B 539

  • ASTM B 539


  • NMEA AB 4-2009

El Real Decreto 223/2008

  • El Real Decreto 223/2008

IEEE C37.09

  • IEEE C37.09-2007


Measuring functions

  • Bidirectional resistance measurement from 1 μΩ up to 199,9 Ω with test current up to 2 A.

Key features

  • Four measuring modes: Automatic, single, continuous and inductive.
  • Automatic thermal EMF elimination: with automatic bidirectional measurement.
  • Accurate: 1 µΩ best resolution with 0.25% accuracy.
  • Noise rejection: 50 Hz / 60 Hz ripple detection and rejection.
  • Battery powered: more than 800 measurements of 500 mΩ load ∞ 2 A test current & 15 s measurement duration.
  • Safe: High overvoltage protection (CAT III / 600 V) allows measurement in substations and other points with low line resistance. Internal protection circuit protects user and instrument from inadvertent connection to lines.
  • Custom limits: Pre-programmed limits with PASS/FAIL evaluation of measurement result and bright REEN/RED indicators providing visual evaluation of the results.
  • Portable: Lightweight portable design.
  • Memory: Up to 1500 test results with timestamp can be stored in internal memory.
  • Downloadable: PC SW HVLink PRO enables downloading, review, analyses and printing of test results.

Technical data

  • Dimensions (w x h x l): 140 x 80 x 230 mm
  • Weight (with batteries, without accessories): 1.0 kg


Installations exceeding 1 kv

  • Testing contacts, joints and switches

Low Voltage Electrical Installation Safety

  • Mains bonding and touch voltages during fault

Hospital earthing and lightning protection 

  • Mains bonding and touch voltages during fault current



Download File Language Version Release Notes Type Size View Download
Datasheet MI 3242 MicroOhm 2A en 2019 05.02.2019 pdf 564.94 KB
Datasheet PC SW HVLink PRO en 1.0 03.04.2012 pdf 228.88 KB
Manual MI 3242 MicroOhm 2A en 1.1.4 10.09.2020 20 752 011 pdf 985.21 KB Login
PC Software HVLink PRO en 11.8 01.06.2015 Readme zip 21.82 MB Login
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