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

RMO-H series

Handheld, battery operated micro ohmmeters

Picture micro-ohmmeter rmoa rmog rmod micro-ohmmeter-rmoh
Models RMO100A, RMO200A, RMO300A, RMO400A, RMO500A, RMO600A RMO100G, RMO200G, RMO300G,RMO400G, RMO500G, RMO600G, RMO800G RMO200D, RMO500D, RMO600D RMO-H1, RMO-H2, RMO-H3
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

Up to *300 A

*Up to 100A for RMO-H1,
*Up to 220A for RMO-H2,
*Up to 300A for RMO-H3

Resistance Range 0,1 µΩ – 999,9 mΩ 0,1 µΩ – 999,9 mΩ 0,1 µΩ – 999,9 mΩ 0,1 µΩ – 2500 mΩ
Resolution 0,1 µΩ 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) ± (0,1 % rdg + 0,1 % FS)
Both Sides Grounded NO YES (with current clamps) YES (with current clamps) YES
Demagnetization feature NO NO YES NO
Built-in thermal printer YES (optional) YES (optional) YES (optional) NO
Pass/Fail criteria YES (Rmax feature) 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) YES (DV-Win software)


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


RMO instruments are based on state of the art technology, using the most advanced switch mode technique available today. With over 15 Years in designing and  manufacturing  Micro Ohmmeters, DV Power has established wide range with  16  portable  and  3  handheld  models  of  high-precision micro  ohmmeters. The  range  includes  a  number of portable testers designed for use in tough environments, ideal for use in test facility or out in the field.  To complement the range of units we also have all the accessories you could ever need, ranging from cable clamps to remote control units.
The units are  rugged  yet  compact while maintaining  accurate low resistance  measurements. 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 significantly reduces magnetic transients.

We grant a number of key advantages to our customers:

     • Three-Years Warranties: We’re confident about the quality of our products, which is why these warranties           include repair  work on malfunctions of  manufactured parts. We cover  labor and return shipping for repaired               components, and we will also perform recalibration on all meters.

     • Quality Repair Department: We offer a full range of repairs on any of the products we sell, and we’ll                        complete them quickly to make sure you’re back up and running fast

     • Help Finding the Right Products: You might not always know exactly what you need when it comes to wide          range resistance  meters  and other tools. If  that’s the  case, you  can contact us to  speak with  an expert  on the          subject who will help you find the right fit.

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