The only meter on the market that implements all measurement methods:
Technical method of 2, 3 or 4 poles
Drive method (4/10μs, 8/20μs, 10/350μs).
Double-clamp method without the need for auxiliary electrodes.
Soil resistivity.
It allows the following measurements to be made:
- Grounding resistance using auxiliary electrodes
- Grounding resistance using auxiliary electrodes and tweezers (for multiple grounding measurements).
- Grounding resistance using double clamps (for grounding measurements when auxiliary electrodes cannot be used).
- Soil resistivity (using Wenner's method).
- Current using clamps (e.g. leakage) as well as elastic clamps (harmful current).
- Measurement of the continuity of compensating and protective connections (complying with IEC 60364-6-61:2000 pt. 6.12.2) with self-neutralisation function - by means of current 200mA
It allows the following measurements to be made:
- Measurement of the resistance of the auxiliary electrodes Rs and Rh
- Measurement of the disturbance voltage.
- Measurement of the frequency of the disturbing signal.
- Measurement in presence of disturbance voltages in networks with frequency 16 2/3 Hz, 50Hz, 60 Hz, 400Hz (with auto/manual frequency selection).
- Selection of the maximum measurement voltage (24V and 50V)
- Enter the distance between the electrodes for resistivity in meters (m) and feet (ft).
- Storage for 990 measurements (10 banks of 99 cells).
- Calibration of the clamps used.
- Real time clock (RTC).
- Data transmission to the computer (USB).
- Accumulator power indicator.
It allows the following measurements to be made:
- Earth resistance by means of auxiliary electrodes
- Grounding resistance using auxiliary electrodes and clamps (for multiple grounding measurements)
- Earth resistance with the help of double clamps (to measure the earth)
- when the auxiliary electrodes cannot be used).
- Soil resistivity (according to Wenner's method)
- Current using pliers (e.g. leakage current), as well as elastic pliers (harmful current).
- Measurement of the continuity of the compensation and protection connections (which respect
IEC 60364-6-61:2000 pt. 6.12.2) with self-neutralisation function - by current 200mA.
Besides:
-Measurement of the resistance of the auxiliary electrodes Rs and Rh.
-Disturbance voltage measurement
-Measuring the frequency of the disturbing signal...
-Measurement in the presence of mains disturbance voltage at the frequency of 16 2/3 Hz, 50 Hz, 60 Hz
400Hz (with automatic/manual frequency selection)
-Selection of the maximum measurement voltage (24V and 50V)
-Enter the distance between the resistivity electrodes in meters (m) and feet (ft).
-Storage for 990 measurements (10 banks of 99 cells)
-Calibration of the clamps used.
-Real Time Clock (RTC).
-Data transfer to the computer (USB)
-Battery power indicator
UN disturbance voltage (RMS) measurement:
Range | Resolution | Accuracy |
0-100V | 1V | ±2% v.m.v. +3 digits |
Measurement of the frequency of the disturbances:
Range | Resolution | Accuracy |
15...450Hz | 1Hz | ±1% v.m.v. +2 digits |
Measuring the continuity of protective and compensating connections
Measuring range according to IEC61557-5: 0,24Ω . 19,9kΩ
Range | Resolution | Accuracy |
0,00…3,99Ω | 0,001Ω | ±2% v.m.+4 digits |
4,0…39,9Ω | 0,01Ω | ±2% v.m.s. +2 digits |
40…399Ω | 0,1Ω | |
400…3999Ω | 1Ω | |
4...19,9kΩ | 10Ω | ±5% v.m.s. +2 digits |
Dynamic earth resistance (DR) measurement - pulse method (4p):
Range | Resolution | Accuracy |
0,00…99,9Ω | 0,1Ω | ±2.5% m.v.+3 digits |
100…200Ω | 1Ω |
Measurement of earth resistance (3- or 4-pole method)
Measuring range according to IEC61557-5: 0.30Ω... 19,9kΩ
Range | Resolution | Accuracy |
0,00…3,999Ω | 0,001Ω | ±2% v.m.+4 digits |
4,0…39,99Ω | 0,01Ω | ±2% v.m.s. +2 digits |
40,0…399,9Ω | 0,1Ω | |
400...3999kΩ | 1Ω | |
4.0...19,99kΩ | 10Ω | ±5% v.m.s. +2 digits |
Measurement of the resistance of the RH and RS auxiliary electrodes:
Range | Resolution | Accuracy |
0,00…999Ω | 1Ω | ±5% (RS+RE+RH)+8 digits |
1,0kΩ... 9,99kΩ | 10Ω | |
10 kΩ ...19,9kΩ | 100Ω |
Reading of the measured values of the resistance of the auxiliary electrode RH and RS on the right display (separate part of the display)
Measurement of the resistance of multiple ground connections using clamps and auxiliary electrodes (3 wires + clamps)
Measuring range according to IEC61557-5: 0.12Ω... 1999Ω
Range | Resolution | Accuracy |
0,00…3,99Ω | 0,001Ω | ±8% v.m.+4 digits |
4,0kΩ... 39,99Ω | 0,01Ω | ±8% v.m.s. +3 digits |
40 …399,9Ω | 0,1Ω | |
400.1999Ω | 1Ω |
Soil resistivity measurement Method of measurement: Wenner, p=2πLRE
Range | Resolution | Accuracy |
0.00...199,9Ωm | 0.1Ωm | Depends on the base error of the SWR measurement in the 4-conductor system, but not less than ±1 digit... |
200...1999Ωm | 1Ωm | |
2.00k... 19,99kΩm | 10Ωm | |
20.0k... 99.9kΩm | 100Ωm | |
100...999kΩm | 1kΩm |
Measuring the resistance of multiple ground connections using double clamps
Range | Resolution | Accuracy |
0,00…19,99Ω | 0,01Ω | ±10% v.m.s. +3 digits |
20,0…149,9Ω | 0,1Ω | ±20% v.m.v. +3 digits |
Measurement of alternating current
Range | Resolution | Accuracy |
0,1... 99.9mA1 | 0.1mA | ±8% v.m.s. +5 digits |
100...999mA1 | 1mA | ±8% v.m.s. +3 digits |
1,00…4,99A1 | 0,001A | ±5% v.m.s. +5 digits |
5,0…9,99A1,2 | 0,01A | ±5% v.m.s. +5 digits |
10…99,9A1,2 | 0,1A | |
100…300A1,2 | 1A |
AMRU-200 GPS Detailed Specifications
Electrical safety : Measurement category Protection class according to EN 60529 Other technical data: Screen Interface The number of measurements they use A set of accumulators Garantí Nominal conditions of use: Working temperature Storage temperature Moisture | Double, according to EN 61010-1 and IEC 61557 CAT III 600V according to EN 61010-1 IP54 Graphic LCD, illuminated USB
36 months -10...+50oC -20...+70oC |
Standard accessories :
50 m of cable on spool; yellow
25 m of cable on spool; red
25 m of cable on spool; blue
1.2 m cable with banana plug; red
2.2 m cable with banana plug; black
USB cable for data transmission
Driver for charging the batteries in the cigarette lighter socket
car (12V)
30 cm earth probe (4 pieces)
Case L2
Crocodile K01; black
Crocodile K02; red
Ni-MH battery 4.8V 4.2Ah
Go to
Power supply cable
Power supply for charging the Z7 batteries
Meter carrying harness
Calibration certificate
User's Manual
Optional accessories :
Software for the creation of documentation
An 80 cm probe to be inserted in the ground
N-1 Emission Tweezers (Ø=52mm)
2 m of two-wire cable with banana plugs.
Reception of C-3 clamps (Ø=52mm)
LR14 battery box (size C)
Probe cover L3 for 80 cm probe
Spring clamps (Rogowski coil) F1