It allows to take the measurements of:
• earth resistance using auxiliary electrodes,
• earth resistance using auxiliary electrodes and clamp (for measurements of multiple earthing)
• earth resistance using double clamps for measuring multiple earthing without underground connections,
• impulse earth impedance (without disconnecting measured earthing),
• ground resistivity (Wenner method),
• current using the clamp (e.g. leakage) and flexible clamp (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 and Bluetooth*,
• indication of battery state.

• 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

• operation temperature: -10...+50°C
• storage temperature: -20...+70°C
• humidity: 20...80%

• LCD display: graphic, backlighted
• interface: USB
• 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) 
Range / Resolution / Accuracy
• 0,000...3,999 Ω / 0,001 Ω / ±(2% m.v. + 4 digits)
• 4,00...39,99 Ω / 0,01 Ω / ±(2% m.v. + 2 digits)
• 40,0...399,9 Ω / 0,1 Ω / ±(2% m.v. + 2 digits)
• 400...3999 Ω / 0,001 kΩ / ±(2% m.v. + 2 digits)
• 4,00k...19,99 kΩ / 0,01 kΩ / ±(5% m.v. + 2 digits) 

measurement range to IEC61557 - 5: 0,100 Ω...19,9 kΩ

Measurement of Continuity of Equipotential Bondings and Protective Conductors (Rcont) 
Range / Resolution / Accuracy
• 0,000...3,999 Ω / 0,001 Ω / ±(2% m.v. + 4 digits)
• 4,00...39,99 Ω / 0,01 Ω / ±(2% m.v. + 2 digits)
• 40,0...399,9 Ω / 0,1 Ω / ±(2% m.v. + 2 digits)
• 400...3999 Ω / 0,001 kΩ / ±(2% m.v. + 2 digits)
• 4,00k...19,99 kΩ / 0,01 kΩ / ±(5% m.v. + 2 digits)

measurement range to IEC61557 - 4: 0,045 Ω...19,99 kΩ

Measurement of Resistance of Auxiliary Electrodes RH and RS
Range / Resolution / Accuracy
• 0...999 Ω / 1 Ω / ±(5% (RS+RE+RH) + 8 digits)
• 1,00k...9,99 kΩ / 0,01 kΩ / ±(5% (RS+RE+RH) + 8 digits)
• 10,0k...19,9 kΩ / 0,1 kΩ / ±(5% (RS+RE+RH) + 8 digits)

Measurement of Multiple Earthing Resistance with using the Clamp and Auxiliary Electrodes (3p + clamp)
Range / Resolution / Accuracy
• 0,000...3,999 Ω* / 0,01 Ω / ±(8% m.v. + 4 digits)
• 10,0...99,9 Ω / 0,01 Ω / ±(8% m.v. + 3 digits)
• 100...999 Ω / 0,1 Ω / ±(8% m.v. + 3 digits)
• 1,00k...1,99 kΩ / 1 Ω / ±(8% m.v. + 3 digits)

* - in range 0,000…0,045 Ω the accuracy is not specified.

Measurement of Multiple Earthing Resistance with using Double Clamps
Range / Resolution / Accuracy
• 0,00...19,99 Ω / 0,1 Ω / ±(10% m.v. + 3 digits)
• 20,0...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...199,9 Ωm / 0,1 Ωm / depending on measurement accuracy RE with 4p method, but not less than ±1 digit
200...1999 Ωm / 1 Ωm / "
2,00k...19,99 kΩm / 0,01 kΩm / "
20,0k...99,9 kΩm / 0,1 kΩm / "
100k...999 kΩm / 1 kΩm / "

L – distance between probes: 1...50 m

Measurement of AC Current (leakage)
Range / Resolution / Accuracy
0,1...99,9 mA*  / 0,1 mA / ±(8% m.v. + 5 digits)
100...999 mA* / 1 mA / ±(8% m.v. + 3 digits)
1,00...4,99 A*'**  / 0,01 A / ±(5% m.v. + 5 digits)* unspecified** 
5,00...9,99 A*'**  / 0,01 A / ±(5% m.v. + 5 digits)
10,0...99,9 A*'** / 0,1 A / ±(5% m.v. + 5 digits)
100...300 A*'** / 1 A / ±(5% m.v. + 5 digits)

* – receiving clamp (diameter 52 mm) – C-3
** – flexible clamp (Rogowski coil) with diameter 400 mm – F-1

Measurement of Dynamic Earthing Resistance (RD) with Impulse Wave Method (4p)
Range / Resolution / Accuracy
0,0...99,9 Ω / 0,1 Ω / ±(2,5% m.v. + 3 digits)
100...199 Ω / 1 Ω / ±(2,5% m.v. + 3 digits)

choice impulse edges: 4/10μs, 8/20μs, 10/350μs
„m.v.”- measured value