DEMAGNETIZATION feature: The DEMAGNETIZATION feature enables for full automatic demagnetization of a current transformer core after the measurement.
High Precision module (built-in): offers a highly accurate contact resistance measurement in the range from 1 μΩ to 30 μΩ, with 0,01 μΩ resolution.
RMO-D series of Micro Ohmmeters contain 3 models: RMO200D, RMO500D and RMO600D. The main difference between these models is the maximum test current that can be generated
Application：Typical application is measuring resistance of non-inductive test objects:
High, middle and low voltage circuit breakers (live and dead tank)
High, middle and low voltage disconnecting switches
High-current bus bar joints
RMO-D generates a true DC ripple-free current with automatically regulated test ramps. During a test the RMO-D ramps with increasing current before measuring and decreasing current after the measurement. This eliminates magnetic transients.
The RMO-D 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-D 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-D 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.
The RMO-D instrument has four separate test modes: SINGLE mode, CONTIN mode, BSG mode (Both Sides Grounded), DTRtest mode (Dead Tank Resistance).
DV-Win Software (*included in the purchase price):
Full control of the device in test
Test raports available in several formats
Several filters for results download to a PC
Sampling time feature for CONTIN mode
Detailed Help menu
Mains power supply
Connection according to IEC/EN60320-1; C320
Mains supply: 90 V – 264 V AC
Frequency: 50 / 60 Hz
RMO200D: 1785 VA@ 230 V AC; 1770 VA@115 V AC
RMO500D: 3865 VA@ 230 V AC; 3615 VA@115 V AC
RMO600D: 4560 VA@ 230 V AC; 3925 VA@115 V AC
RMO200D: F type, 12A/250V
RMO500D & RMO600D: F type, 20A/250V
Test current ranges and load intervals (Model/Test Current/Test Duration):
RMO200D: 200A, 150s
RMO500D: 500A, 30s
RMO600D: 600A, 20s
Full Load Voltages at maximum current:
RMO200D: 6.7V@ 230 V AC; 5.8V@ 115 V AC
RMO500D: 5.8V@ 230 V AC; 4.7V@ 115 V AC
RMO600D: 5.7V@ 230 V AC; 3.6V@ 115 V AC
Resistance range: 0,1 μΩ – 999,9 mΩ
0,01 μΩ - 99,99 μΩ: 0,01 μΩ
100,0 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)
LCD screen 20 characters by 4 lines;
LCD display with backlight, visible in bright sunlight.
RMO-G is equipped with an USB port
optional: RS232 (connection to an external computer)
optional: Bluetooth communication interface
Paper width 80 mm / 3.2 in
Please feel free to contact for detailed specifications, accessories, software and options.