featuring continuous measurement current up to 200 A
The MICRO-OHMMETER MR5-200C is used to determine electric resistances on very low – resistance objects (e. g. bus bars, any connectors) while using a very high, continous flowing measurement current. The MR5-200C is able to generate a stable maximum current up to 200 A.
Under normal conditions, the electric resistance can be determined using a much lower current. For example, our MICRO-OHMMETER MR300C-A has a 10A measurement current with a resolution of 10nW (10-8W). However, faulty connections can not be found this way, as a high current is needed to determine the dissipation causing unstable or rising measurement values on bad connections.
To perform this a high measurement current of the MR5- 200C can be generated constantly over longer periods. Additionally, the measurement values can be send to any PC based spreadsheet program e.g. EXCEL© using the integrated interface. Time based sending is also supported, e.g. when evaluating the dissipation, measurement values are sent via interface with one second time gap.
|TEST CURRENT||max. 200A (True DC). Increment 1 A.
Adjustable and presetable from 0 to 100%
|0-199.9 µΩ (test current: up to 200 A).
0-1.999 mΩ (test current: up to 200 A).
0-19.99 mΩ (test current: up to 100 A).
0-199.9 mΩ (test current: up to 20 A).
0-1999 mΩ (test current: up to 2 A).
|READING RESOLUTION||0.1 μΩ for R < 200 μΩ.
1 μΩ for R < 2000 μΩ.
10 μΩ for R < 20 mΩ.
|OUTPUT VOLTAGE||4..5 Vdc @ all currents.|
|DISPLAY||4 digits result, current and time
LCD 9mm character height with backlight
|TOTAL RESISTANCE||max. 20 mΩ @ 200A.
max. 40 mΩ @ 100A.
|MEASUREMENT PRINCIPLE||Four-terminal due to Kelvin|
|Protects the instrument from overheating.|
|CONTINUOUS OPERATION TIME||At 200 A this device should not be used continously for more than 30 minutes (overheat protected). At 100 A the measuring time is unlimited.|
|BASIS ACCURACY||± 0.3 % of reading ± 0.1 % of Range.|
|CURRENT FLOW DURATION||The duration (time) for steady current flow can be easily set to 1,2,5,10,20s. ....up to 600s or unlimited (o.h. protected).|
|ADVANCED FEATURES||Digital direct reading of resistance, current, measuring time and updated every second|
|BUILT-IN MEMORY||Storage of 1000 test readings.|
|INTERFACE||RS232 @ 2400, 4800, 9600 baud. , USB-B|
|IP54 (with closed lid).|
|SAFETY CLASS||Meets the requirements of IEC 61010-1:1990, IEC 61010-1:1992 amendment 2.|
|POWER SUPPLY||90~264 VAC - 47~63Hz / 127~370VDC|
|OPERATING TEMPERATURE||-5°C to 50°C.|
|STORAGE TEMPERATURE||-40°C to 85°C.|
|HUMIDITY RANGE||10~95 % of RH (non condensing).|
|EQUIPMENT WEIGHT||Approx. 9.5 kg. (without cables)|
|DIMENSIONS||410W x 330D x 180H mm.|
All technical datas are evaluated with 5 m Standard Measuring Cables, 100 µΩ test resistance, 230V line source, at 23°C room temperature.
This instrument can be delivered as MR5-200P version too. There are two main differences between the MR5-200C and the MR5-200P:
The C-Version uses continuous measuring current, the P-Version offers only a current duration of one second maximal. On the other hand the P-Version can be used for short time measurements without line connection, the C-Version needs line source for all operation modes.
|Current flow||up to 1 h cont.||3 s at 200 A|
|Max. Measurements||no limit||100 @ 200A battery only|
|Weight||9.5 kg||10.5 kg|
|Inductive objects||only small loads||no inductive loads|
All other technical datas and features are identical.
- Useful Range 20 µΩ – 2Ω (within specified uncertainty)
- Max. resolution 0.1 µΩ = 100 Nanoohm
- Display 4 digits
- Measuring current 1 .. 200 A, continous
- Interface RS232C, USB-B
- Built-in thermal printer
- Cables included: Standard 5m 2x current- (25mm2), 2x sense-, ground-, line- and RS232/ USB-cable (PC)
- Factory calibration certificate
- Rugged, robust mobile case
- XFER PC software included!
DIN EN ISO 9001:2008