Micro Ohmmeters – RMO-A series

rmoa rmoa
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Overview

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

       RMO100A – test current from 5 to 100 A, weighs only 7 kg / 15.4 lbs
       RMO200A – test current from 5 to 200 A, weighs only 7 kg / 15.4 lbs
       RMO300A – test current from 5 to 300 A, weighs only 7,5 kg / 16.5 lbs
       RMO400A – test current from 5 to 400 A, weighs only 7,5 kg / 16.5 lbs
       RMO500A – test current from 5 to 500 A, weighs only 8 kg / 17.5 lbs
       RMO600A – test current from 5 to 600 A, weighs only 8 kg / 17.5 lbs
  • 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

RMO-A series of Micro Ohmmeters (hereafter referred to as “RMO-A”) is based on a state of the art technology, using the most advanced switch mode technique available today.RMO-A generates a true DC ripple-free current with automatically regulated test ramps. During a test the RMO-A ramps with increasing current before measuring and decreasing current after the measurement. This eliminates magnetic transients.

The RMO-A instrument can store internally up to 500 measurements. All measurements are time and date stamped. Using the DV-Win software a test can be performed from a user’s PC, and the results can be obtained directly on the PC. Communication between the RMO-A and a PC is through an USB (as standard) or an RS232 cable (as an option). Bluetooth communication interface is also available 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-A 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.

Accessories

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
Optional accessories

  • Built-in thermal printer
  • Thermal paper roll
  • Test shunt 600 A / 60 mV
  • Current cables 2 x 10 m XX* mm2
  • Current cables 2 x 15 m XX* mm2
  • Extension cable 2 x 10 m XX* mm2
  • Sense cables 2 x 10 m with alligator clips
  • Sense cables 2 x 15 m with alligator clips
  • Cable plastic case
  • Cable bag
  • Device bag

XX* recommended cross-section

Model / Cable length 5 m / 16.4 ft. 10 m / 32.8 ft. 15 m / 49.2 ft.
RMO100A 16 mm2 (6 AWG) 16 mm2 (6 AWG) 25 mm2 (4 AWG)
RMO200A 25 mm2 (4 AWG) 25 mm2 (4 AWG) 35 mm2 (2 AWG)
RMO300A 35 mm2 (2 AWG) 35 mm2 (2 AWG) 50 mm2 (1/0 AWG)
RMO400A 35 mm2 (2 AWG) 35 mm2 (2 AWG) 50 mm2 (1/0 AWG)
RMO500A 50 mm2 (1/0 AWG) 50 mm2 (1/0 AWG) 70 mm2 (2/0 AWG)
RMO600A 50 mm2 (1/0 AWG) 50 mm2 (1/0 AWG) 70 mm2 (2/0 AWG)

Technical data

Mains Power Supply

  • Connection: according to IEC/EN60320-1; C320
  • Mains supply: 90 V – 264 V AC
  • Power consumption:
  • @ 230 V AC of supply voltage

    RMO100A RMO200A RMO300A RMO400A RMO500A RMO600A
    1210 VA 1890 VA 2360 VA 3520 VA 3930 VA 4560 VA

    @ 115 V AC of supply voltage

    RMO100A RMO200A RMO300A RMO400A RMO500A RMO600A
    1150 VA 1880 VA 2170 VA 2650 VA 3850 VA 4040 VA
  • Fuse:
  •    RMO100A & RMO200A     12 A / 230 V, type F
       RMO300A & RMO400A     15 A / 230 V, type F
       RMO500A & RMO600A     20 A / 250 V, type F

Output data

  • Test current
  • RMO100A RMO200A RMO300A RMO400A RMO500A RMO600A
    5 – 100 A 5 – 200 A 5 – 300 A 5 – 400 A 5 – 500 A 5 – 600 A
  • Max load interval (@ I max)
  • RMO100A RMO200A RMO300A RMO400A RMO500A RMO600A
    300 s 150 s 60 s 60 s @ 300 A 30 s 20 s
  • Full Load Voltage*
  • @ 230 V AC of supply voltage

    RMO100A RMO200A RMO300A RMO400A RMO500A RMO600A
    7,25 V 7,10 V 5,90 V 6,60 V 5,90 V 5,70 V

    @ 115 V AC of supply voltage

    RMO100A RMO200A RMO300A RMO400A RMO500A RMO600A
    6,90 V 6,10 V 4,70 V 4,30 V 5,00 V 3,70 V

    *maximal output voltage at maximal test current

Measurement

  • Resistance range: 0,1 µΩ – 999,9 mΩ
  • Resolution
    •    0,1 µΩ – 999,9 µΩ            0,1 µΩ

         1,000 mΩ – 9,999 mΩ     1 µΩ

         10,00 mΩ – 99,99 mΩ     10 µΩ

         100,0 mΩ – 999,9 mΩ      0,1 mΩ

  • Typical accuracy: ± (0,1 % rdg + 0,1 % FS)
Environment conditions

  • Operating temperature:       -10°C – +55°C / 14°F – 131°F
  • Storage and transportation: -40°C – +70°C / -40°F – 158°F
  • Humidity: 5 % – 95 % relative humidity, non condensing
  • Installation/overvoltage category: II
  • Pollution degree: 2
Dimensions and Weight

  • Dimensions: 198 mm x 255 mm x 380 mm
                                7.8 in  x   10 in    x   15 in
  • Weight
  • RMO100A RMO200A RMO300A RMO400A RMO500A RMO600A
    7 kg / 15.4 lbs 7 kg / 15.4 lbs 7,5 kg / 16.5 lbs 7,5 kg / 16.5 lbs 8 kg / 17.5 lbs 8 kg / 17.5 lbs
Warranty

  • Warranty: three years
Data storage and transfer

  • Internal memory locations: 500 result sets
  • Connection Interface:
  •    USB serial interface to connect to an external computer,
       or RS232 interface (optional),
       Bluetooth communication module (optional) – works in combination with RS232 interface.

Printer (optional)

  • Thermal printer: Paper width 80 mm
Safety

  • Low Voltage Directive 2014/35/EU (CE Conform)
  • Applicable standards, for a class I instrument, pollution degree 2,
       Installation category II : IEC EN 61010-1
  • CAN/CSA-C22.2 No. 61010-1
Electromagnetic Compatibility

  • Directive 2014/30/EU (CE Conform)
  • Applicable standard EN 61326-1

All specifications listed herein are valid at the ambient temperature of + 25 °C (77°F) and with the recommended accessories included.

Specifications are subject to change without notice.

DV-Win Software


dv-win


  • Full control of the device in test
  • Test raports available in several formats
  • Several filters for results download to a PC
  • Test plans
  • Samling time feature for CONTIN mode
  • Detailed Help menu

*included in the purchase price



RMO DV-Win Software provides several advanced features as a supplement to multiple functions of RMO devices. Testing in Continuous mode is upgraded with a sample time feature which allows user to record test results in specific time intervals set in seconds. After performed measurements results can be saved in a various formats and test report can be generated and saved or printed. Result can also be downloaded from the device to the PC by use of several different search filter.

For the RMO form of DV-Win software there is Help menu available, with detailed instructions and explanations of all functions and features.

Download


Download brochure


Version: 305
Published: 2017-05-25

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