Telurometer AMRU 120

Telurometer AMRU 120

Technical method with 3 or 4 poles, Technical method with the use of additional clamps, Measurement of the continuity of compensating and protective connections with self-neutralization function, Double clamp method without the need to place auxiliary electrodes, Soil resistivity in addition to

It allows the following measurements to be made:

  • Grounding resistance using auxiliary electrodes
  • Earthing resistance using auxiliary electrodes and clamps (for multiple earthing measurements)
  • Grounding resistance using double clamps (for grounding measurements when auxiliary electrodes cannot be used),
  • Soil resistivity (using Wenner's method)
  • 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

Additionally:

  • Measurement of the resistance of the auxiliary electrodes Rs and Rh
  • Measurement of disturbance voltage
  • Measurement of the frequency of the disturbance signal
  • Measurement in the presence of disturbance voltages in networks with frequency 50Hz and 60 Hz
  • Selection of the maximum measurement voltage (25V and 50V)
  • Entering the distance between the electrodes for resistivity in meters (m)
  • Storage for 990 measurements (10 banks of 99 cells)
  • Calibration of the used clamps
  • Real Time Clock (RTC)
  • Data transmission to the computer (USB)
  • Accumulator energy indicator

UN disturbance voltage measurement (RMS)

Range

Resolution

Accuracy

0...100V

1V

±(2% v.m. + 3 digits)

Alarm if voltage exceeds 24V or 40V rms

Measurement for DC and AC 45...65 Hz

Measurement of continuity of protective and compensating connections

Measuring range according to IEC61557-5: 0.24Ω... 19,9kΩ

Range

Resolution

Accuracy

0,00...19,99Ω

0,01Ω

±(2% v.m. + 2 digits)

20,0...199,9Ω

0,1Ω

200...1999Ω

2,00k... 9,99kΩ

10Ω

±(5% v.m. + 2 digits)

10,0k... 19,9kΩ

100Ω

Measurement method: two-wire technique

Voltage between terminals: < 24Vrms but >4Vrms

Measuring current: short-circuited >200mA

Measurement current frequency: 125 (for 50Hz network) or 150Hz (for 60Hz network), selection of measurement frequency in menu

Self-neutralization of measurement cables

"v.m." - measured value

Earth resistance measurement (3 or 4 pole method)

Measuring range according to IEC61557-5: 0.30Ω... 19,9kΩ

Range

Resolution

Accuracy

0,00...19,99Ω

0,01Ω

±(2% v.m. + 2 digits)

20,0...199,9Ω

0,1Ω

200...1999Ω

±(5% v.m. + 4 digits)

2,00k... 9,99kΩ

10Ω

10,0k... 19,9kΩ

100Ω

Method of measurement: three- and four-wire technique

Measuring current: short-circuited >200mA

Terminal to terminal voltage: selective <25V AC or <50V AC

Measurement current frequency: 125 (for 50Hz network) or 150Hz (for 60Hz network), selection of measurement frequency in menu

Measurement of the resistance of the RH and RS auxiliary electrodes

Range

Resolution

Accuracy

0...999Ω

±(5% (RS +RE +RH ) + 8 digits)

1,00kΩ... 9,99kΩ

10Ω

10,0kΩ... 19,9kΩ

100Ω

Reading of the measured values of the resistance of the auxiliary electrode RH and RS on the

Measurement of the resistance of multiple ground connections using clamps and auxiliary electrodes (3 wires + clamps)

Measurement range according to IEC61557-5: 0.44Ω... 199kΩ

Range

Resolution

Accuracy

0,00...19,99Ω

0,01Ω

±(8% v.m. + 3 digits)

20,0...199,9Ω

0,1Ω

200...1999Ω

Method of measurement: three- and four-wire technique

Measuring current: short-circuited >200mA

Terminal to terminal voltage: selective <25V AC or <50V AC

Measurement current frequency: 125 (for 50Hz network) or 150Hz (for 60Hz network), selection of measurement frequency in menu

Soil resistivity measurement Method of measurement: Wenner, p=2πLRE

Range

Resolution

Accuracy

0.00...199,9Ωm

0,1Ωm

depends on the basic error of the RE 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

100k... 999kΩm

1kΩm

L - the distance between the measuring probes: 1...50m

Measuring the resistance of multiple ground connections using double clamps

Range

Resolution

Accuracy

0,00...19,99Ω

0,01Ω

±(10% v.m. + 3 digits)

20,0...149,9Ω

0,1Ω

±(20% v.m. + 3 digits)

Measurement method: 2-pin technique

Measuring current frequency 125 (for 50Hz network) or 150Hz (for 60Hz network)

Electrical safety:

Type of insulation

Double, according to EN 61010-1 and IEC 61557

Measurement category

CAT III 600V according to EN 61010-1

Protection class, according to EN 60529

IP54

Other technical data:

Screen

Graphic LCD, illuminated

Interface

USB

Number of measurements using one set of accumulators

500

Warranty

36 months

Nominal conditions of use:

Working temperature

-10...+50°C

Storage temperature

-20...+70°C

Moisture

20...80%

Standard accessories:

  • 50m cable on reel; yellow
  • 25m cable on reel; red
  • 25m cable on reel; blue
  • Probe with banana plug: yellow
  • 2m cable with banana plug; yellow
  • 2m cable with banana plug; black
  • Crocodile K01; black
  • 30 cm probe to put in the ground (4 pieces)
  • L2 Case
  • USB cable for data transmission
  • Ni-MH battery 4,8V 3Ah
  • Power supply for charging Z7 batteries
  • Power supply cable
  • Meter carrying harness
  • Calibration certificate
  • Operation manual

Optional accessories:

  • Software for the creation of documentation
  • Software for the creation of drawings and diagrams
  • USB key
  • Crocodile K02; black
  • 80 cm probe to be put in the ground
  • 2m two-wire cable with banana plugs
  • L3 probe cover for 80 cm probe
  • C-3 Reception Clamps (Ø=52mm)
  • N-1 emission clamps (Ø=52mm)
  • Ni-MH battery 4,8V 4,2Ah
  • Vise
  • LR14 battery box (size C)
  • Driver for charging the car cigarette lighter socket batteries (12V)
  • Interface for wireless transmission OR-1
Download the catalogue: Telurometer AMRU 120.

Download the catalogue of Telurometer AMRU 120.

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