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Sonel MRU-200 Earth Resistance & Resistivity Meter
- Utilises all measurement methods to determine earth resistance
- Real-time clock, integrated memory, and battery-state indicator
- Available with or without GPS
SKU
MRU-200-X
The Sonel MRU-200 Earth Resistance & Resistivity Meter is an earth tester that can utilise every measurement method to determine earth resistance. It is available with or without built-in GPS; please see the table below for further information.
| SKU | Title | GPS | Note |
| MRU-200 | Sonel MRU-200 Earth Tester | No | - |
| MRU-200-GPS | Sonel MRU-200 Earth Tester with GPS | Yes | GPS coordinates are saved with measurements |
The Sonel MRU-200 Earth Resistance & Resistivity Meter supports the following measurement methods and functions:
- Earth resistance measurement using a 2-pole, 3-pole and 4-pole method
- Selective earth resistance measurement using a clamp (no influence from parallel earth and the opening of junctions is not required)
- Impulse earth resistance measurement with three kinds of measuring impulse: 4/10µs, 8/20µs and 10/350µs
- Two-clamps earth resistance measurement without auxiliary test probes
- Earth resistance using auxiliary electrodes and/or a clamp
- Impulse earth resistance
- Ground resistivity using the Wenner method
- Resistance of auxiliary electrodes RS and RH
- Leakage current
- Current using a clamp or flexible clamp
- Continuity of equipotential bondings and protective conductors with an auto-zero function and 200mA current (meets the requirements of IEC 60364-6-61:2000 section 6.12.2)
- Interference voltage
- Interference frequency
*** Please note clamps are NOT included. ***
The Sonel MRU-200 Earth Resistance & Resistivity Meter's ability to measure earth resistance using auxiliary electrodes and a clamp means the user can take multiple earth measurements; while support for the double-clamp method is ideal when it is not feasible to use electrodes. Additionally, the Sonel MRU-200 Earth Resistance & Resistivity Meter can measure interference voltage in power networks with a frequency of 16 2/3Hz, 50Hz, 60Hz and 400Hz. The user can manually select the proper frequency or the Sonel MRU-200 Earth Resistance & Resistivity Meter can be set to configure this parameter automatically.
Furthermore, the user can select the maximum measuring voltage (25V or 50V) and can enter the distance between the electrodes to measure the resistivity in metres (m) and/or feet (ft).
Up to 990 measurements can be saved to the Sonel MRU-200 Earth Resistance & Resistivity Meter (ten banks of ninety-nine cells). These measurements can be transferred to a computer via a Bluetooth or USB interface.
Finally, the Sonel MRU-200 Earth Resistance & Resistivity Meter also includes a battery-state indicator and a real-time clock.
The Sonel MRU-200 Earth Resistance & Resistivity Meter is a versatile earth tester with a real-time clock and an integrated memory as well as optional GPS.
Sonel MRU-200 Earth Resistance & Resistivity Meter Key Features
- An earth tester that can utilise all measurement methods to determine earth resistance
- Available with or without GPS
- Earth resistance measurement using a 2-pole, 3-pole and 4-pole method
- Selective earth resistance measurement using a clamp (no influence from parallel earth and the opening of junctions is not required)
- Impulse earth resistance measurement with three kinds of measuring impulse: 4/10µs, 8/20µs and 10/350µs
- Two-clamps earth resistance measurement without auxiliary test probes
- Earth resistance using auxiliary electrodes and/or a clamp
- Impulse earth resistance
- Ground resistivity using the Wenner method
- Resistance of auxiliary electrodes RS and RH
- Leakage current
- Current using a clamp or flexible clamp
- Continuity of equipotential bondings and protective conductors with an auto-zero function and 200mA current (meets the requirements of IEC 60364-6-61:2000 section 6.12.2)
- Interference voltage
- Interference frequency
- Can take multiple earth measurements using auxiliary electrodes and a clamp
- Double-clamp method is ideal when it is not feasible to use electrodes
- Measure interference voltage in power networks with a frequency of 16 2/3Hz, 50Hz, 60Hz and 400Hz
- Manual or automatic setting of the proper frequency
- Maximum measuring voltage: 25V or 50V
- Enter the distance between the electrodes to measure the resistivity in metres and/or feet
- Save up to 990 measurements (10 banks of 99 cells)
- Transfer data to a computer via a Bluetooth or USB interface
- Battery-state indicator
- Real-time clock
- A versatile earth tester with optional GPS
What’s Included?
- Sonel MRU-200 Earth Resistance & Resistivity Meter with OPTIONAL GPS
- 2m Test Lead with Banana Plug (Red)
- 2m Test Lead with Banana Plug (Black)
- 25m Test Lead on a Reel with Banana Plugs (Red)
- 25m Test Lead on a Reel with Banana Plugs (Blue)
- 50m Shielded Test Lead with Banana Plugs (Yellow)
- USB Transmission Cable
- Battery Vehicle Charger (12V)
- 4x 0.3m Earth Contact Test Probe (rod)
- Carrying Case
- 8V, 4.2 Ah Ni-MH Battery Package
- K01 Crocodile Clip (Black)
- K02 Crocodile Clip (Red)
- Cramp
- Z7 Power Supply Adapter
- Cable for Battery Charger
- Hanging Straps
- Calibration Certificate
Technical Information
Specification
Sonel MRU-200 Earth Resistance & Resistivity Meter Technical Specifications
| 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 | IP 54 | |
| Rated operational conditions | ||
| Operation temperature | -10...+50°C | |
| Storage temperature | -20...+70°C | |
| Humidity | 20...90% | |
| Other Technical Data | ||
| LCD display | graphic, backlighted | |
| Interface | USB und Bluetooth | |
| Number of measurements carried out of set of batteries | > 1200 | |
| Measurement of interference voltage | ||
| Range | Resolution | Accuracy |
| 0...100 V | 1 V | ±(2% m.v. + 3 digits) |
| Measurement of interference frequency | ||
| Range | Resolution | Accuracy |
| 15...450 Hz | 1 Hz | ±(1% m.v. + 2 digits) |
| Measurement of earthing resistance (method 3- and 4-pole) | ||
| Note | measurement range to IEC 61557-5: 0,100 Ω...19,9 kΩ | |
| Range | Resolution | Accuracy |
| 0,000...3,999 Ω | 0.001Ω | ±(2% m.v. + 4 digits) |
| 4,00...39,99Ω | 0.01Ω | ±(2% m.v. + 2 digits) |
| 40,0...399,9Ω | 0.1Ω | |
| 400...3999Ω | 1Ω | |
| 4,00k...19,99kΩ | 0.01kΩ | ±(5% m.v. + 2 digits) |
| Measurement of earth connection and equipotential bonding (2P) | ||
| Note | range of measurements in accordance with IEC 61557-4: 0,045 Ω...19,99 kΩ | |
| * - in range 0,000…0,045 Ω the accuracy is not specified. | ||
| Range | Resolution | Accuracy |
| 0.000...3.999Ω | 0.001Ω | ±(2% m.v. + 4 digits) |
| 4.00...39.99Ω | 0.01Ω | ±(2% m.v. + 2 digits) |
| 40.0...399.9Ω | 0.1Ω | |
| 400...3999Ω | 1Ω | |
| 4.0...19.99kΩ | 0.01kΩ | ±(5% m.v. + 2 digits) |
| Measurement of resistance of auxiliary electrodes RH and RS | ||
| Range | Resolution | Accuracy |
| 0...999Ω | 1Ω | ±(5% (R +R +R ) + 8 ) S E H digits |
| 1.00...9.99 kΩ | 0.01kΩ | |
| 10,0...19.9kΩ | 0.1kΩ | |
| Measurement of multiple earthing resistance with using the clamp and auxiliary electrodes (3p + clamp) |
||
| Note | measurement range to IEC61557-5: 0,120...1999 Ω | |
| Range | Resolution | Accuracy |
| 0.000...3.999Ω | 0.001 | ±(8% m.v. + 4 digits) |
| 4.00...39.99Ω | 0.01 | ±(8% m.v. + 3 digits) |
| 40.0...399.9Ω | 0.1 | |
| 400...1999Ω | 1 | |
| Measurement of multiple earthing resistance with using double clamps | ||
| Range | Resolution | Accuracy |
| 0.00...19.99 | 0.01Ω | ±(10% m.v. + 3 digits) |
| 20.0...149.9Ω | 0.1Ω | ±(20% m.v. + 3 digits) |
| Measurement of ground resistivity | ||
| Note | Measurement method: Wenner, r=2pLR | |
| Measurement method: Wenner, r=2pLRE | ||
| Range | Resolution | Accuracy |
| 0,0...199.9Ωm | 0.1Ωm | depending on measurement accuracy R with 4p method, E but not less than ±1 digit |
| 200...1999Ωm | 1Ωm | |
| 2.00...19.99kΩm | 0.01kΩm | |
| 20.0...99.9kΩm | 0.1kΩm | |
| 100...999kΩm | 1kΩm | |
| Measurement of AC current (leakage) | ||
| Notes | 1 – receiving clamp (diameter 52 mm) – C-3 | |
| 2 – flexible clamp (Rogowsky coil) with diameter 400 mm – F-1 | ||
| Range | Resolution | Accuracy |
| 0.1...99.9 mA 1 | 0.1 mA | ±(8% m.v. + 5 digits) |
| 100...999 mA 1 | 1 mA | ±(8% m.v. + 3 digits) |
| 1.00...4.99 A 1, 2 | 0.01 A | ±(5% m.v. + 5 digits) 1 unspecified 2 |
| 5.00...9.99 A 1, 2 | 0.01 A | ±(5% m.v. + 5 digits) |
| 10.0...99.9 A 1, 2 | 0,1 A | |
| 100...300 A 1, 2 | 1 A | |
| Measurement of dynamic earthing resistance (R ) with impulse wave method (4 ) | ||
| Note | choice impulse edges: 4/10 ms, 8/20 µs, 10/350 ms | |
| Range | Resolution | Accuracy |
| 0.0...99.9Ω | 0.1Ω | ±(2,5% m.v. + 3 digits) |
| 100...199Ω | 1Ω | |
Document Downloads
Sonel MRU-200 Earth Resistance & Resistivity Meter - Datasheet
Sonel MRU-200 Earth Resistance & Resistivity Meter - User Manual
Sonel MRU-200 Earth Resistance & Resistivity Meter - Quick Start Guide
Additional Information
SKU
MRU-200-X
Sonel MRU-200 Earth Resistance & Resistivity Meter
£2,230.00
£2,676.00 inc vat
£2,230.00
£2,676.00 inc vat