$3,207.00 $2,995.00

MRU-200 is the only meter in the market which uses all measurement methods.

Possible measurements:
  • earth resistance measurment with 2-pole, 3-pole,4-pole method,
  • impulse earth impedance measurement, three kinds of measuring impulse 4/10μs, 8/20μs, 10/350μs,
  • earth resistance measurement without disconnecting measured earths (using clamp),
  • two clamps earth resistance measurement without auxiliary test probs,
  • earth resistivity measurement,
  • continuity measurement,
  • leakage current measurement.

4 in stock

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

Additional information

Weight 19 lbs
Dimensions 7.3 × 18 × 13 in

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