DV-Power Micro Ohmmeters

  • Product No:RMO-A series
  • Manufacturer:IBEKO Power AB (DV-Power)

RMO-A series of Micro Ohmmeters (hereafter referred to as “RMO-A”) contain 6 models: RMO100A, RMO200A, RMO300A, RMO400A, RMO500A and RMO600A.

All RMO-A 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 RMO100A, 200 A for RMO200A, up to 600 A for RMO600A model).

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 significantly decreases magnetic transients.

The RMO-A 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 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 electromagnetic interference in HV electric fields. It is achieved by very efficient filtration. The filtration is made utilizing a proprietary hardware and software. 
The RMO-A instrument has three separate test modes:
  SINGLE mode  CONTIN mode  DTRtest mode

Mains power supply

  • Connection according to IEC/EN60320-1; C320 

  • Mains supply: 90 V – 264 V AC 

  • Frequency: 50 / 60 Hz

  • Power consumption

    Model                 @ 230 V AC                 @ 115 V AC

    RMO100A           1210 VA                        1150 VA

    RMO200A           1890 VA                        1880 VA

    RMO300A           2360 VA                        2170 VA

    RMO400A           3520 VA                        2650 VA

    RMO500A           3930 VA                        3850 VA

    RMO600A           4560 VA                        4040 VA

  • Fuse:                                          type F

    RMO100A & RMO200A             12 A / 250 V 

    RMO300A & RMO400A             15 A / 250 V

    RMO500A & RMO600A              20 A / 250 V

Output data

  • Test current ranges and load intervals: 

    Model                  Test current                     Test duration

    RMO100A           100 A                               *300 s

    RMO200A           200 A                                150 s

    RMO300A           300 A                                 60 s

    RMO400A           400 A                                 60 s @300 A

    RMO500A           500 A                                 30 s

    RMO600A           600 A                                 20 s

    *test duration at 100 A test current can be up to 30 minutes  as per request

  • Open circuit voltage:     10 V DC ± 2%

  • Full Load Voltages at maximum current

    Model               @ 230 V AC                @ 115 V AC

    RMO100A            7,25 V                         6,90 V

    RMO200A            7,10 V                         6,10 V

    RMO300A            5,90 V                         4,70 V

    RMO400A            6,60 V                         4,30 V

    RMO500A            5,90 V                         5,00 V

    RMO600A            5,70 V                         3,70 V

Measurement

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

    *expandable from 0 Ω up to 6 Ω 

  • 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

    *1,000 Ω – 6,000 Ω         1 mΩ

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

Display

  • LCD screen 20 characters by 4 lines;  

  • LCD display with backlight, visible in bright  sunlight. 

Interface

  • RMO-A is equipped with an USB port   

  • optional: RS232 (connection to an external computer) 

  • optional: Bluetooth communication interface

Test Result Storage

  • RMO-A can store up to 500 measurements

Printer (optional)

  • Thermal printer 

  • Paper width 80 mm / 3.2 in

NOTE

The print density is guaranteed within the range 5°C to 40°C, 20 to 85% relative humidity, no condensation.  The printer can operate from 0°C to 50°C.

Dimensions and weight

  • Model               Dimensions                        Weight

    RMO100A                                                   7 kg / 15.4 lbs

    RMO200A        (W x H x D)                        7 kg / 15.4 lbs
    RMO300A        mm 198 x 255 x 380          7,5 kg / 16.5 lbs
    RMO400A        (W x H x D) in                    7,5 kg / 16.5 lbs

    RMO500A         7.8 x 10 x 15                     8 kg / 17.5 lbs
    RMO600A                                                   8 kg / 17.5 lbs

Environmental protection

  • Ingress protection rating: IP50     

Environmental conditions

  • Operating temperature: -10 ºC - +55 ºC / +14 ºF - +131 ºF

  • Storage & transportation: -40 ºC - +70 ºC / -40 ºF - +158 ºF

  • Humidity 5 % - 95 % relative humidity

Warranty: 3 Years