* Stakeless earth ground rod testing using 2 clamps
* IP56 rated for outdoor use
* 4-pole Soil Resistivity testing
* USB data storage and transfer
* IP56 rated for outdoor use
* 4-pole Soil Resistivity testing
* USB data storage and transfer
Temperature Range |
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Operating Temperature |
14 to 122°F (-10 to 50°C) |
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Storage Temperature |
-22 to 140°F (-30 to 60°C) |
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Temperature Coefficient |
±0.1% of reading/°C <18°C >28°C |
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Intrinsic Error |
Refers to the reference temperature range and is guaranteed for one year |
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Operating Error |
Refers to the operating temperature range and is guaranteed for one year |
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Climatic Class |
C1 (IEC 654-1), 23 to 115°F (-5 to 45°C), 5 to 95% RH |
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Protective Type |
IP56 for case, IP40 for battery door according to EN60529 |
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Safety |
Protection by double and/or reinforced insulation maximum 50 V to earth. IEC61010-1: 300V CAT II, Pollution degree two |
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EMC (Emission Immunity) |
IEC61326-1: Portable |
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Quality System |
Developed, designed, and manufactured according to DIN ISO 9001 |
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External Voltage |
V external, maximum = 24 V (dc, ac <400 Hz), measurement inhibited for higher values |
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V Ext Rejection |
>120 dB (16²⁄3, 50, 60, 400 Hz) |
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Measuring Time |
Typical six seconds |
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Maximum Overload |
250 V rms (pertains to misuse) |
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Auxiliary Power |
6 x 1.5 V Alkaline (type AA LR6) |
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Battery Life Span |
Typical >3000 measurements |
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RA 3-Pole Ground Resistance Measurement (IEC 1557-5) |
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Switch Position |
RA 3-pole |
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Resolution |
0.001 to 10 Ω |
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Measuring Range |
0.020 Ω to 19.99 kΩ |
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Accuracy |
±(2% rdg + 3 d) |
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Operating Error |
±(5% rdg + 3 d) |
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Measuring Principle: Current/Voltage Measurement |
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Measuring Voltage |
Vm = 48 V ac |
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Short-Circuit Current |
>50 mA |
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Measure Frequency |
128 Hz |
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Probe Resistance (RS) |
Maximum 100 kΩ |
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Auxiliary Earth Electrode Resistance (RH) |
Maximum 100 kΩ |
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Additional Error from RH and RS |
RH[kΩ]RS[kΩ]/RA[Ω]0.2% |
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RA 4-Pole Ground Resistance Measurement (IEC 1557-5) |
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Switch Position |
RA 4-pole |
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Resolution |
0.001 to 10 Ω |
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Measuring Range |
0.020 Ω to 19.99 kΩ |
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Accuracy |
±(2% rdg + 3 d) |
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Operating Error |
±(5% rdg + 3 d) |
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Measuring Principle: Current/Voltage Measurement |
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Measuring Voltage |
Vm = 48 V ac |
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Short-Circuit Current |
>50 mA |
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Measure Frequency |
128 Hz |
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Probe Resistance (RS + RES) |
Maximum 100 kΩ |
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Auxiliary Earth Electrode Resistance (RH) |
Maximum 100 kΩ |
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Additional Error from RH and RS |
RH[kΩ]RS[kΩ]/RA[Ω]0.2% |
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Monitoring of RS and RH with error indicator. Automatic range selection. |
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RA 3-Pole Selective Ground Resistance Measurement with Current Clamp (RA with Clamp) |
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Switch Position |
RA 3-pole with clamp |
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Resolution |
0.001 to 10 Ω |
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Measuring Range |
0.020 Ω to 19.99 kΩ |
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Accuracy |
±(7% rdg + 3 d) |
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Operating Error |
±(10% rdg + 5 d) |
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Measuring Principle: Current/Voltage Measurement (with External Current Clamp) |
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Measuring Voltage |
Vm = 48 V ac |
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Short-Circuit Current |
>50 mA |
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Measure Frequency |
128 Hz |
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Probe Resistance (RS) |
Maximum 100 kΩ |
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Auxiliary Earth Electrode Resistance (RH) |
Maximum 100 kΩ |
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Monitoring of RS and RH with error indicator. Automatic range selection. Measurement is not performed if the current through the current clamp is too low. |
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RA 4-Pole Selective Ground Resistance Measurement with Current Clamp (RA with Clamp) |
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Switch Position |
RA 4-pole with clamp |
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Resolution |
0.001 to 10 Ω |
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Measuring Range |
0.020 Ω to 19.99 kΩ |
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Accuracy |
±(7% rdg + 3 d) |
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Operating Error |
±(10% rdg + 5 d) |
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Measuring Principle: Current/Voltage Measurement (with External Current Clamp) |
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Measuring Voltage |
Vm = 48 V ac |
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Short-Circuit Current |
>50 mA |
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Measure Frequency |
128 Hz |
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Probe Resistance (RS) |
Maximum 100 kΩ |
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Auxiliary Earth Electrode Resistance (RH) |
Maximum 100 kΩ |
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Monitoring of RS and RH with error indicator. Automatic range selection. Measurement is not performed if the current through the current clamp is too low. |
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Stakeless Ground Loop Measurement (2 Clamps) |
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Switch Position |
RA 4-pole 2 clamps |
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Resolution |
0.001 to 10 Ω |
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Measuring Range |
0.020 Ω to 19.99 kΩ |
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Accuracy |
±(7% rdg + 3 d) |
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Operating Error |
±(10% rdg + 5 d) |
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Measuring Principle: Stakeless Measurement of Resistance in Closed Loops Using Two Current Transformers |
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Measuring Voltage |
Vm = 48 V ac |
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Measure Frequency |
128 Hz |
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Noise Current (IEXT) |
Maximum IEXT = 10 A (ac) (RA <20 Ω) |
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General Specifications |
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Display |
1999 Digit LCD: Display with special symbols, digit height 25 mm, fluorescent backlight |
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User Interface |
Instant measurement through TURN and START one button concept. The only operating elements are rotary switch and START button |
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Robust, Water and Dust Resistant |
Instrument is designed for tough environmental conditions (rubber protective cover, IP56) |
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Memory |
Internal memory storage up to 1500 records accessible via USB port |
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Dimensions |
9.75 x 5.25 x 7.35" (250 x 133 x 187 mm) |
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Weight |
2.43 lbs (1.1 kg) including batteries 16.8 lbs (7.6 kg) included accessories and batteries in carrying case |