Protective earth resistance meter RMO100E

rmo60e rmo60e


  • Lightweight – only 8 kg
  • Powerful 1 A – 100 A DC
  • Measuring range 0,1 µΩ – 25 Ω
  • Resolution to 0,1 µΩ
  • Mechanical protection IP43

The RMO100E is ideal for testing protective bonding (grounding) of equipment following the standard IEC 61010-1. Besides this application, RMO100E can be used for contact resistance measurement of non-inductive test objects (e.g. Circuit breakers, disconnector switches, bus bars, etc.)

The RMO100E generates true DC current with automatically regulated test ramps. During the test RMO100E ramps with increasing current before measuring and decreasing current after the measurement. This significantly reduces magnetic transients.

The RMO100E instrument can store up to 500 measurements. All measurements are time and date stamped. Using DV-Win software a test can be performed from a PC, and the results can be obtained directly at a PC. Communication between RMO100E and PC is through USB or RS232 cable. Using DV-Win the result can be arranged as an Excel spreadsheet that can be later shown as a diagram and printed for a report.

The set is equipped with thermal and overcurrent protection.


Included accessories

  • DV-Win PC software
  • Ground (PE) cable
  • USB cable
Recommended accessories

  • Current cables 2 x 5 m 16 mm2 with battery clips
  • Sense cables 2 x 5 m with alligator clips
  • Transport case
Optional accessories

  • Built-in thermal printer
  • Thermal paper roll
  • Test shunt 600 A / 60 mV
  • Current cables 2 x 10 m 16 mm2
  • Sense cables 2 x 10 m with alligator clips
  • Cable plastic case
  • Cable bag



RMO DV-Win Software provides several advanced features as a supplement to multiple functions of RMO devices. Testing in Continuous mode is upgraded with a sample time feature which allows user to record test results in specific time intervals set in seconds. After performed measurements results can be saved in a various formats and test report can be generated and saved or printed. Result can also be downloaded from the device to the PC by use of several different search filters.

For the RMO form of DV-Win software there is Help menu available, with detailed instructions and explanations of all functions and features.


Download brochure

Version: 301
Published: 2018-01-13

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