RMO-G series – Micro Ohmmeters

  • Lightweight – from 8 to 11,5 kg /17.6 lbs to 25.4 lbs
  • Powerful – up to 800 A DC
  • Measuring range 0 – 999,9 mΩ (up to 6 Ω)
  • Best resolution 0,01 μΩ
  • Typical accuracy ± (0,1 % rdg + 0,1 % FS)
  • Remote Control Unit (optional)
  • Both Sides Grounded Unit (optional)
  • A built-in High Precision module (optional)
  • SINGLE / CONTIN / BSG / DTRtest modes

RMO-G series of Micro Ohmmeters (hereafter referred to as “RMO-G”) contain 7 models: RMO100G, RMO200G, RMO300G, RMO400G, RMO500G, RMO600G and RMO800G.
All RMO-G models are based on a state of the art technology, using the most advanced switch mode technique available today. The main difference between these models is the maximum test current that can be generated (100 A for RMO100G, 200 A for RMO200G, up to 800 A for RMO800G model).
RMO-G generates a true DC ripple-free current with automatically regulated test ramps. During a test the RMO-G ramps with increasing current before measuring and decreasing current after the measurement. This eliminates magnetic transients.
The RMO-G instrument can store internally up to 500 measurements. All measurements are time and date stamped. Using the DV-Win soft-ware a test can be performed from a PC and the results can be obtained directly on the PC.
Communication between the RMO-G and a PC is through an USB (as standard) or an RS232 cable (as an option). Using the DV-Win the result can be arranged as an Excel spread-sheet which can be later shown as a diagram and printed for a report.
The set is equipped with a thermal and an overcurrent protection. The RMO-G has a very high ability to cancel electrostatic and electro-magnetic interference in HV electric fields. It is achieved by very efficient filtration. The filtration is made utilizing a proprietary hardware and software.
The RMO-G instrument has four separate test modes:

  • SINGLE mode
  • CONTIN mode
  • BSG mode (Both Sides Grounded)
  • DTRtest mode (Dead Tank Resistance)


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