Micro Ohmmeters

RMO-A series

Powerful and lightweight Micro Ohmmeters with IP43 protective rating

RMO-G series

Micro Ohmmeters with Both Sides Grounded feature

RMO-D series

Micro Ohmmeters with Both Sides Grounded and Demagnetization features

Picture rmoa rmog rmod
Models RMO100A, RMO200A, RMO300A, RMO400A, RMO500A, RMO600A RMO100G, RMO200G, RMO300G,RMO400G, RMO500G, RMO600G, RMO800G RMO200D, RMO500D, RMO600D
Current Range 5 A – *600 A

*600A for RMO600A model, 100 A for RMO100A

5 A – *800 A

*800A for RMO800G model, 100 A for RMO100G

5 A – *600 A

*600A for RMO600D model, 200 A for RMO200D

Resistance Range 0,1 µΩ – 999,9 mΩ 0,1 µΩ – 999,9 mΩ 0,1 µΩ – 999,9 mΩ
Resolution 0,1 µΩ 0,1 µΩ 0,1 µΩ
Accuracy ± (0,1 % rdg + 0,1 % FS) ± (0,1 % rdg + 0,1 % FS) ± (0,1 % rdg + 0,1 % FS)
DTRtest mode YES YES YES
Both Sides Grounded NO YES (with current clamps) YES (with current clamps)
Demagnetization feature NO NO YES
Built-in thermal printer YES (optional) YES (optional) YES (optional)
Pass/Fail criteria YES (Rmax feature) YES (Rmax feature) YES (Rmax feature)
Communication ports USB
RS232 (optional)
Bluetooth (optional)
RS232 (optional)
Bluetooth (optional)
RS232 (optional)
Bluetooth (optional)
PC Software YES (DV-Win software) YES (DV-Win software) YES (DV-Win software)


  • Power circuit breakers (including dead-tank circuit breakers)
  • Disconnecting switches
  • Interrupters
  • Bar installation
  • Cable splices
  • Welded joints
  • Groundings

The Micro Ohmmeters – RMO series instruments are designed for contact resistance measurement of non-inductive test objects. RMO instruments are based on state of the art technology, using the most advanced switch mode technique available today. RMO generates a true (ripple free) DC current with automatically regulated test ramps. During the test RMO ramps with increasing current before measuring and decreasing current after the measurement. This approach eliminates magnetic transients.

With over 15 Years in designing and manufacturing Micro Ohmmeters, DV Power has established wide range with 18 models of high-precision micro ohmmeters.

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