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Ground resistance meter MRU-200
$3199.00
Ground resistance meter MRU-200
Brands:Sonel Test And Measurement
Warranty: As per Manufacturer policy
100% Genuine Product Brand Warranty
Easy and Secure Payment
Timely delivery with complete tracking
THE MRU-200-GPS OFFERS A VARIETY OF MEASUREMENT METHODS FOR GROUND RESISTANCE AND RESISTIVIY
The MRU-200-GPS is the only meter which can perform all ground resistance measurement methods; 2-pole, 3-pole, 4-pole, and impulse earth impedance methods.
- » Ground resistance using auxiliary electrodes, or with electrodes and clamp for measurements in the presence of multiple ground paths
- » Ground resistance using double clamps when it is not possible to use auxiliary electrodes
- » Impulse ground resistance without disconnecting measured grounding
- » Soil resistivity using Wenner method
- » Leakage current using current clamp or flexible Rogowsky probe
- » Measurement of continuity of equipotential bonding and protective conductors (meets IEC 60364-6-61:2000 section 6.12.2) with auto-zero function and 200 mA current
KEY FEATURES:
- » Ground resistance measurement, with 2-pole, 3-pole, or 4-pole methods
- » Leakage current measurement
- » Selective measurement with clamp excludes influence from parallel ground points
- » No opening of rusted conductors needed
- » Impulse ground resistance measurement at 4/10 µs, 8/20 µs, or 10/350 µs
- » Two clamps resistance measurement method without auxiliary test probes
- » GPS coordinates of measurement location are stored with test results
OTHER FUNCTIONS & FEATURES
- » Resistance measurement of auxiliary electrodes
- » Measurement of interference voltage and interference frequency
- » Measurement in the presence of interference voltages at 162/3 Hz, 50 Hz, 60 Hz, and 400 Hz
- » Automatic or manual selection of frequency of measuring signal
- » Selection of maximum measuring voltage (25 V and 50 V)
- » Distance between the electrodes noted in meters (m) and feet (ft)
- » Memory storage for 990 measurements
- » Calibration information of test clamp(s)
- » Real-time clock
- » USB interface for PC connection
- » Internal battery with indication of state of charge
- » Backlit LCD graphic display
ELECTRICAL SAFETY
- » Double insulated meets IEC 61010-1 and IEC 61557 standards CAT IV 300 V
Multiple measurement possibilities:
- earth resistance using auxiliary electrodes,
- earth resistance using auxiliary electrodes and current clamp for measurements of multiple earth ground points
- earth resistance using double current clamps for measurement of earth ground when it is impossible to use electrodes in the ground
- impulse earth impedance for lightning without disconnecting measured earthing
- ground resistivity (Wenner method),
- current using current clamp (e.g. leakage) and flexible current probe (Rogowsky coil),
- measurement of continuity of equipotential bondings and protective conductors (meeting the requirements of IEC 60364 – 6 – 61:2000 section 6.12.2) with auto-zero function – with current 200 mA.
Additionally:
- measurement of resistance of auxiliary electrodes RS and RH,
- measurement of interference voltage,
- measurement of interference frequency,
- measurement in the presence of interference voltage in the power network
with frequency 16 2/3 Hz, 50 Hz, 60 Hz and 400 Hz (with automatic selection of proper frequency of measuring signal or with manual selection), - selection of maximum measuring voltage (25 V and 50 V)
- 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),
- calibration of clamp used,
- real time clock (RTC),
- data transmission to the computer (USB),
- indication of battery state.
Electric security:
- type of insulation: double, according to EN 61010 – 1 and IEC 61557
- measurement category: CAT IV 300 V acc. to EN 61010 – 1
- protection class acc. to EN 60529: IP54
Rated operational conditions:
- operation temperature: 14F to 122F / -10 to +50°C
- storage temperature: -4F to 158F / -20 to +70°C
- humidity: 20 to 80%
Other technical data:
- LCD display: graphic, backlighted
- interface: USB
- number of measurements carried out of set of batteries: > 1200
- warranty: 24 months
Measurement of interference voltage
| Range | Resolution | Accuracy |
| 0 to 100 V | 1 V | ±(2% m.v. + 3 digits) |
Measurement of interference frequency
| Range | Resolution | Accuracy |
| 15 to 450 Hz | 1 Hz | ±(1% m.v. + 2 digits) |
Measurement of earthing resistance (method 3- and 4-pole)
measurement range to IEC61557 – 5: 0.100 Ω to 19.9 kΩ
| Range | Resolution | Accuracy |
| 0.000 to 3.999 Ω | 0.001 Ω | ±(2% m.v. + 4 digits) |
| 4.00 to 39.99 Ω | 0.01 Ω | ±(2% m.v. + 2 digits) |
| 40.0 to 399.9 Ω | 0.1 Ω | |
| 400 to 3,999 Ω | 0.001 kΩ | |
| 4.00k to 19.99 kΩ | 0.01 kΩ | ±(5% m.v. + 2 digits) |
Measurement of continuity of equipotential bondings and protective conductors (Rcont)
measurement range to IEC61557 – 4: 0.045 Ω to 19.99 kΩ
| Range | Resolution | Accuracy |
| 0.000 to 3.999 Ω | 0.001 Ω | ±(2% m.v. + 4 digits) |
| 4.00 to 39.99 Ω | 0.01 Ω | ±(2% m.v. + 2 digits) |
| 40.0 to 399.9 Ω | 0.1 Ω | |
| 400 to 3,999 Ω | 0.001 kΩ | |
| 4.00k to 19.99 kΩ | 0.01 kΩ | ±(5% m.v. + 2 digits) |
Measurement of resistance of auxiliary electrodes RH and RS
| Range | Range | Accuracy |
| 0 to 999 Ω | 1 Ω | ±(5% (RS+RE+RH) + 8 digits) |
| 1.00k to 9.99 kΩ | 0.01 kΩ | |
| 10.0k to 19.9 kΩ | 0.1 kΩ |
Measurement of multiple earthing resistance with using the clamp and auxiliary
electrodes (3p + clamp)
| Range | Resolution | Accuracy |
| 0.000 to 3.999 Ω* | 0.01 Ω | ±(8% m.v. + 4 digits) |
| 10.0 to 99.9 Ω | 0.01 Ω | ±(8% m.v. + 3 digits) |
| 100 to 999 Ω | 0.1 Ω | |
| 1.00k to 1.99 kΩ | 1 Ω |
* – in range 0.000 to 0.045 Ω the accuracy is not specified.
Measurement of multiple earthing resistance with using double clamps
| Range | Resolution | Accuracy |
| 0.00 to 19.99 Ω | 0.1 Ω | ±(10% m.v. + 3 digits) |
| 20.0 to 149.9 Ω | 0.1 Ω | ±(20% m.v. + 3 digits) |
Measurement of ground resistivity Measurement method: Wennera, ρ=2πLRE
| Range | Resolution | Accuracy |
| 0.0 to 199.9 Ωm | 0.1 Ωm | depending on measurement accuracy RE with 4p method, but not less than ±1 digit |
| 200 to 1999 Ωm | 1 Ωm | |
| 2.00k to 19.99 kΩm | 0.01 kΩm | |
| 20.0k to 99.9 kΩm | 0.1 kΩm | |
| 100k to 999 kΩm | 1 kΩm |
L – distance between probes: 1 to 150 ft / 1 to 50 m
Measurement of AC current (leakage)
| Range | Resolution | Accuracy |
| 0.1 to 99.9 mA 1 | 0.1 mA | ±(8% m.v. + 5 digits) |
| 100 to 999 mA 1 | 1 mA | ±(8% m.v. + 3 digits) |
| 1.00 to 4.99 A 1,2 | 0.01 A | ±(5% m.v. + 5 digits)1 unspecified 2 |
| 5.00 to 9.99 A 1,2 | 0.01 A | ±(5% m.v. + 5 digits) |
| 10.0 to 99.9 A 1,2 | 0.1 A | |
| 100 to 300 A 1,2 | 1 A |
1 – receiving clamp (diameter 2″ / 52 mm) – C-3
2 – flexible clamp (Rogowsky coil): F-1 diameter 14″ / 360 mm; F-2: diameter 9″ / 235 mm; F-3: diameter 4.7″ / 120 mm
Measurement of dynamic earthing resistance (RD) with impulse wave method (4p )
| Range | Resolution | Accuracy |
| 0.0 to 99.9 Ω | 0.1 Ω | ±(2,5% m.v. + 3 digits) |
| 100 to 199 Ω | 1 Ω |
choice impulse edges: 4/10μs, 8/20μs, 10/350μs
„m.v.”- measured value
| Weight | 17 kg |
|---|
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