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DMO600 Digital Micro-Ohmmeter

4.33 (3 reviews)

  • Ultra lightweight (19.7g)
  • 10-600A DC test current with <2.5% ripple
  • 0.1μΩ resolution
  • mV, A, and m/μΩ displayed simultaneously
  • USB memory key for data storage
  • USB keyboard for comment entry
  • Pre-settable test current with three buttons to store user test currents
  • Large back-lit liquid crystal display
  • Universal supply voltage 90-264V
  • Supplied with 3m output lead set
  • Optional current clamp to allows testing of objects with both sides earthed


The DMO600 Digital Micro-Ohmmeter is a versatile device designed for precise resistance measurements. It is ideal for various applications and environments, such as commissioning, maintenance, and production lines. Additionally, the unit excels at measuring contact resistances in circuit breakers, switch panels, isolators, and busbar joints. You have the option to choose between a metal case or a pelican transport case to suit your needs.

Operating the DMO600 is incredibly simple. Just select the desired test current and activate the output. Moreover, it offers convenient presettable test currents that can be easily stored using the three dedicated buttons. The unit automatically selects the appropriate range, and simultaneously displays current, voltage, and resistance, ensuring accurate measurements. Even when the output is switched off, the display retains the readings.

Efficient results management is facilitated by the USB storage feature. Notably, you can use the provided USB keyboard to enter comments associated with your readings. All results are automatically time and date-stamped, and saved in a CSV file format, which is compatible with popular spreadsheet programs like Microsoft Excel™ or LibreOffice Calc. Furthermore, the bright backlit display ensures clear visibility of test results, including current, sense voltage, and resistance.

In addition to its features, the DMO600 is equipped with an RS232 port for optional printer connectivity and seamless integration with PLCs in production line applications. With this capability, you can take full control of the unit through the RS232 port using a set of simple commands. Transitioning between tests and managing results is effortless with the DMO600.

Our partners, including AcutestAlpha ElectronicsCuthbertson LairdNorwich Instrument Services, and PASS Ltd offer the DMO600 in the United Kingdom. If you are based outside of Great Britain, you can order the product through our worldwide distribution network.

DMO600 Operating Manual


DMO600 Datasheet


Additional information

Metal Case Weight

15.8 kg

Metal Case Dimensions

380 x 314 x 221 mm

Pelican Case Weight

19.7 kg

Pelican Case Dimensions

560 × 456 × 265 mm

Supplied Accessories

User manual
Calibration certificate
Mains lead
3m Output lead set
Orange carry case for metal case version
Earth lead with croc clip
USB key
USB keyboard

3 reviews for DMO600 Digital Micro-Ohmmeter

  1. Richard Evans

    I have a couple of these and they have been performing well since they were purchased. I have them recalibrated with T&R yearly, service could be faster.

  2. Sami Abdi

    Good instrument, we have been using for years. Wish it could replicate every feature of the DMO200.

  3. Benjamin Lee

    Always up to the task, I use it with confidence.

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