info@amperis.com (+34) 982 20 99 20
Earth resistance measurament with 3-pole,4-pole method, Earth resistance measurement without disconnecting measured earths (using clamp), Continuity of equipotential bondings and protecting conductors, Two clamps earth resistance measurement without auxiliary test probes, Earth resistivity measurement
Additionally:
Measurement of interference voltage UN (RMS) |
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Range |
Resolution |
Accuracy |
0...100V |
1V |
±(2% m.v. + 3 digits) |
Singnalling overvoltage 24 V or 40 V rms |
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Measurement for DC and AC 45…65 Hz |
Measurement of continuity of equipotential bondings and protective conductors (Rcont) |
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Measurement range to IEC61557-5: 0,24Ω...19,9kΩ |
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Range |
Resolution |
Accuracy |
0,00...19,99Ω |
0,01Ω |
±(2% m.v. + 2 digits) |
20,0...199,9Ω |
0,1Ω |
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200...1999Ω |
1Ω |
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2,00k...9,99kΩ |
10Ω |
±(5% m.v. + 2 digits) |
10,0k...19,9kΩ |
100Ω |
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2-pole method |
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Voltage on open terminals: <24 Vrms but >4 Vrms |
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Measurement current: under short circuit >200 mA |
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Frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for networks 60 Hz), possible choice of measurement frequency in menu |
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Auto-zero function measurement leads |
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“m.v.” – measured value |
Measurement of earth resistance (method 3- and 4-pole) |
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Measurement range to IEC61557-5: 0,30Ω...19,9kΩ |
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Range |
Resolution |
Accuracy |
0,00...19,99Ω |
0,01Ω |
±(2% m.v. + 2 digits) |
20,0...199,9Ω |
0,1Ω |
|
200...1999Ω |
1Ω |
±(5% m.v. + 4 digits) |
2,00k...9,99kΩ |
10Ω |
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10,0k...19,9kΩ |
100Ω |
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3-pole,4-pole method |
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Measurement current: under short circuit >200 mA |
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Voltage on open terminals: selectable <25 V AC or <50 V AC |
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Frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for 60 Hz) |
Measurement of resistance of auxiliary electrodes RH and RS |
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Range |
Resolution |
Accuracy |
0...999Ω |
1Ω |
±(5% (RS +RE +RH ) + 8 digits) |
1,00kΩ...9,99kΩ |
10Ω |
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10,0kΩ...19,9kΩ |
100Ω |
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Reading of values measured for the electrodo will be in the right side of display RH and RS (separated part of display) |
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Measurement of multiple earth resistance with using the clamp and auxiliary electrodes (3p + clamp) |
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Measurement range to IEC61557-5: 0,44Ω...1999Ω |
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Range |
Resolution |
Accuracy |
0,00...19,99Ω |
0,01Ω |
±(8% m.v. + 3 digits) |
20,0...199,9Ω |
0,1Ω |
|
200...1999Ω |
1Ω |
|
3-pole,4-pole method |
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Measurement current: under short circuit >200 mA |
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Voltage on open terminals: selectable <25 V AC or <50 V AC |
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Frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for 60 Hz) |
Measurement of ground resistivity. Measurement method: Wenner, p=2πLRE |
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Range |
Resolution |
Accuracy |
0,00...199,9Ωm |
0,1Ωm |
depending on measurement |
200...1999Ωm |
1Ωm |
|
2,00k...19,99kΩm |
10Ωm |
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20,0k...99,9kΩm |
100Ωm |
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100k...999kΩm |
1kΩm |
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L – distance between probes: 1...50m |
Measurement of multiple earth resistance with using double clamps |
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Range |
Resolution |
Accuracy |
0,00...19,99Ω |
0,01Ω |
±(10% m.v. + 3 digits) |
20,0...149,9Ω |
0,1Ω |
±(20% m.v. + 3 digits) |
Double clamps method |
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Frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for 60 Hz) |
AMRU-120 Specifications |
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Electric security: |
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Type of insulation |
Double, according to EN 61010-1 and IEC 61557 |
Measurement category |
CAT III 600V acc. to EN 61010-1 |
Protection class acc. to EN 60529 |
IP54 |
Other technical data: |
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Display |
LCD graphic, backlighted |
Interface |
USB, wireless |
Number of measurements carried out of set of batteries |
> 500 |
Warranty |
36 months |
Rated operational conditions: |
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Operation temperature |
-10...+50°C |
Storage temperature |
-20...+70°C |
Humidity |
20...80% |
Standard accesories:
Optional accesories:
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