The RMO-A Series of micro ohmmeters generate a true DC ripple-free current with automatically regulated test ramps. During testing the RMO-A units ramp with increasing current before measuring and decreasing current post measurement. This eliminates magnetic transients. This series is equipped with thermal and overcurrent protection. The RMO-A series can cancel electrostatic and electro-magnetic interference in HV electric fields by using efficient state-of-the-art filtration techniques facilitated by proprietary software and hardware.

RMO-A instruments can save up to 500 measurements within their internal memory. All measurements are time and date stamped and can be analysed using proprietary DV-Win software. Communication between the RMO-A and a PC is through USB connection (standard) or an RS232 cable (option). Bluetooth communication interface is also an available as an option.

DV Power provides a 3-year warranty on all test instrumentation. This is a guarantee to our customers that they will receive the highest quality test equipment on the market.

RMO-A series contain 6 models of powerful and lightweight micro ohmmeters:

RMO100A – test current from 5 to 100 A, weighs only 7 kg 

RMO200A – test current from 5 to 200 A, weighs only 7 kg

RMO300A – test current from 5 to 300 A, weighs only 7.5 kg

RMO400A – test current from 5 to 400 A, weighs only 7.5 kg

RMO500A – test current from 5 to 500 A, weighs only 8 kg

RMO600A – test current from 5 to 600 A, weighs only 8 kg 

  • Measuring range: 0.1 μΩ – 999.9 mΩ
  • Resolution: 0.1 μΩ
  • Typical accuracy: ± (0.1 % rdg + 0.1 % FS)
  • Rmax function (pass/fail criteria)
  • Protection rating: IP43
Included accessories

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

  • Current cables 2 x 5 m XX* mm2 with battery clips
  • Sense cables 2 x 5 m with alligator clips
  • Transport case

DV-Win software is included in the purchase price, and all updates are free of charge. The intuitive software enables remote control of the RMO unit during test. DV-Win facilitates in-depth analysis of test results which can be displayed numerically and graphically on a PC or within an automatically generated report. It is possible to export all test data into all mainstream file types.