MRU-30 Earth Resistance Meter
Key Features:
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earth resistance measurement with 3-pole, 4-pole method,
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selective earth resistance measurement with clamp (no influence from parallel earths; no opening of rusty junctions is needed),
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continuity of eqipotential bondings and protecting conductors,
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two clamps earth resistance measurement without auxiliary test probes,
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earth resistivity measurement.
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measurement of resistance of auxiliary electrodes RS and RH,
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measurement of interference voltage,
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measurement in the presence of interference voltage in the power network with frequency 50Hz, 60Hz,
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selection of maximum measuring voltage (25V and 50V),
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introducing the distance between the electrodes for the resistivity
in metres (m) and feet (ft),
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memory of 990 measurements (10 banks of 99 cells each),
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calibration of clamp used,
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data transmission to the computer (USB),
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indication of battery state.
It allows to take the measurements of:
- earthing resistance using auxiliary electrodes
- earthing resistance using auxiliary electrodes and clamp (for
measurements of multiple earthing)
- earthing resistance using double clamps (for measurement of
earthing when it is impossible to use auxiliary electrodes),
- ground resistivity (Wenner method)
- continuity of equipotential bondings and protective
- conductors (meeting the requirements IEC 60364) with auto-zero
function – with current 200mA.
Measurements of soil resistivity (with Wenner method):
- input of probes spacing distances in metres (m) or in feet (ft).
Measurements of protective connection and equipotential
bonding continuity:
measurement range to IEC 61557-4:2007: 0,13 Ω...1999 Ω
Specifications:
Electrical safety
- type of insulation: double, according to EN 61010-1and IEC 61557, EMC
- measurement category: CAT III 300V acc. to EN 61010-1
- protection class acc. to EN 60529 IP65
Rated operational conditions:
- operation temperature................................................................................ -10...+55°C
- storage temperature................................................................................... -20...+80°C
- humidity.......................................................................................................... 20...90%
Other technical data:
- LCD display........................................................................................ segment, backlit
- dimensions......................................................................................... 200x150x74 mm
.*For full Technical Specifications, please refer to PDF Data Sheet
Standard Accessories for the MRU-30:
Optional Accessories:
- earth contact test probe (rod); 0,3m
- test lead with banana plug; 1,2m; red
- test lead with banana plug; 2,2m; black
- test lead on a reel with banana plug; 25m; red
- test lead on a reel with banana plug; 50m; yellow
- „crocodile” clip K01; black
- pin probe with banana plug; red
- USB transmission cable
- Sonel Reader software
- power supply adaptor Z7
- carrying case M9
- carrying case L10
- earth contact test probe (rod); 0,8m;
- current clamp N-1 (Ø=52mm)
- current clamp C-3 (Ø=52mm)
- carrying case L3
- charger for battery loading from the socket of car lighter (12V)
- calibration certificate issued by calibration laboratory
- Test lead with banana plugs 2m (N-1)
- „Crocodile” clip K02; red
- Cramp