MRU-200 GPS Earth Resistance Meter
Key Features:
MRU-200-GPS is the unique meter in the market which uses all measurement methods.
-
measurement of resistance of auxiliary electrodes R and R , S H
-
measurement of interference voltage,
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measurement of interference frequency,
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measurement in the presence of interference voltage in the power network with frequency 16 2/3 Hz, 50Hz, 60Hz and 400Hz (with automatic selection of proper frequency of measuring signal or with manual selection),
-
selection of maximum measuring voltage (25V and 50V)
-
introducing the distance between the electrodes for the resistivity
in metres (m) and feet (ft),
-
memory of 990 measurements (10 banks of 99 cells each),
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calibration of clamp used,
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real time clock (RTC),
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data transmission to the computer (USB),
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indication of battery state.
Measurement of earth ground impedance:
- with the use of the impulse method (without the necessity for
disconnecting the measured earthing systems),
- three types of the measurement impulse (4/10μs; 8/20μs;
10/350μs)
Measurements of protective connection and equipotential
bonding continuity:
- with auto-zero function - with current ≥ 200 mA - in accordance with
EN 61557-4.
Specifications:
Measurements of earth ground resistance:
- with the use of auxiliary probes (three and four-lead methods),
- with the use of auxiliary probes and clamp (for measurements of
multiple earthing, three-lead + clamp),
- with the use of double clamps (for earthing measurements, when
the use of auxiliary probes is not possible),
- resistance of auxiliary probes R and R , S H
- voltage and frequency of the interfering signal,
- in the presence of interfering voltages in power systems with the
frequency of 16⅔ Hz, 50 Hz, 60 Hz and 400 Hz (with the automatic
or manual selection of proper measurement signal frequency),
- selection of maximal measurement voltage (25 V or 50 V),
- calibration of clamp used.
Electrical safety
- type of insulation: double, according to EN 61010-1and IEC 61557, EMC
- measurement category: CAT IV 300V acc. to EN 61010-1
- protection class acc. to EN 60529 IP54
Rated operational conditions:
- operation temperature................................................................................ -10...+50°C
- storage temperature................................................................................... -20...+70°C
- humidity.......................................................................................................... 20...80%
Other technical data:
- LCD display.................................................................................. graphic, backlighted
- interface................................................................................................................ USB
- number of measurements carried out of set of batteries................................... > 1200
- warranty....................................................................................................... 36 months
.*For full Technical Specifications, please refer to PDF Data Sheet
Measurements of soil resistivity (with Wenner method):
- input of probes spacing distances in metres (m) or in feet (ft).
Standard Accessories for the MRU-200 GPS:
Optional Accessories:
- Test lead with banana plug; 1,2m; red
- Test lead with banana plugs 2,2m; black
- Test lead on a reel with banana plugs; 25m red
- Test lead on a reel with banana plugs; 25m blue
- Shielded test lead on a reel with banana plugs; 50m yellow
- USB transmission cable
- charger for battery loading from the socket of car lighter (12V)
- Earth contact test probe (rod); 0,30m - (4 pcs.)
- Carrying case L2
- Ni-MH battery package 4,8V 4,2Ah
- Crocodile clip K01; black
- Crocodile clip K02; red
- Cramp
- Power supply adaptor Z7
- Cable for battery charger
- Hanging straps
- Calibration certificate issued by calibration laboratory
- Hard carrying case
- Earth contact test probe (rod); 0,80m
- Test lead with banana plugs 2m (N-1)
- Current clamp C-3 (Ø=52mm)
- Current clamp N-1 (Ø=52mm)
- Current flexible clamp (Rogowsky coil) F-1 (Ø=400mm)
- Battery case LR14 (size C)
- Carrying case L3
- Software for creation of documentation from
electrical measurements „SONEL PE4”