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GP-2 GEOTEST Ground Resistance/Resistivity Tester |
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Benefits
- Three point test (fall of potential) measures earth ground
resistance as required by equipment manufacturer specifications
and as mandated by national code requirements for proper
grounding.
- Two point test is used to test grounding wires resistance
and resistance of connection points between ground system elements
i.e. wires and electrodes.
- Tests soil for a new ground system design.
- Does not require any additional meters to test voltage
before grounding test is performed.
- Easy to operate.
- Data can be stored for later viewing.
- Downloads data to a personal computer to generate reports
and store historical data.
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Features
- Measure Earth Ground Resistance (Ω).
- Automatically Calculate Resistivity (mΩ).
- Test leads, auxiliary electrodes and
software are included for a complete instrument.
- Voltage measurement.
- Automatically applies three testing
frequencies for the most accurate readings.
- Auto ranging.
- Stores up to 999 measurements in the
memory.
- DATA download to a PC (via RS-232)
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| Specifications (23°C ±5°C, <80%
R.H.) |
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| Resistance Measurement: |
| Range (*) |
Resolution |
Accuracy(**) |
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0.01Ω to 19.99Ω |
0.01Ω |
±(2% of Rdg + 3
digits) |
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20.0Ω to 199.9Ω |
0.1Ω |
±(2% of Rdg + 3
digits) |
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200Ω to 1999Ω |
1Ω |
±(2% of Rdg + 3
digits) |
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| Resistivity Measurement p |
| Range (*) |
Resolution |
Accuracy(**) |
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0.6Ωm to 125.6Ωm |
0.1Ωm |
±(2% of Rdg + 3
digits) |
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0.125Ωm to
1.256kΩm |
0.001kΩm |
±(2% of Rdg + 3
digits) |
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1.25kΩm to
19.99kΩm |
0.01kΩm |
±(2% of Rdg + 3
digits) |
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20.0kΩm to
199.9kΩm |
0.1kΩm |
±(2% of Rdg + 3
digits) |
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| (*) Automatic selection of the range |
| (**) If Rp > 100RE and/or Rc > 100RE,
Rp > 50kΩ and/or RC > 50kΩ, if
the instrument carries out the test the accuracy of the instrument is
±(10% of reading). |
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Rp = resistance of the voltage circuit.
Rc = resistance of the current circuit.
RE = earth resistance
p = 2ΠDRE
= calculated resistivity |
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| Testing Frequency |
125Hz, 75Hz, 41.66Hz |
| Test Current |
10mA |
| Open-terminal Measuring Voltage |
25Vrms |
| Waveform of Measuring Voltage |
Sine-wave |
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| Interfering Voltage: |
| Amperometric circuit: The measurement is taken with the stated
accuracy if the interfering voltage is ≤ 3V, while
for interfering voltages between 3V and 30V inclusive, the accuracy
decreases progressively; with an interfering voltage of about 30V the
instrument does not perform the test. |
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| Voltmetric circuit: The measurement is taken if the interfering
voltage is ≤ 3; in case of higher voltages the
instrument does not perform the test. |
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| Range |
Resolution |
Accuracy(**) |
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500V |
1V |
±(2% of Rdg + 2
digits) |
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| General Specifications |
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| Display |
65mm x 65mm LCD |
| Memory |
999 memory locations |
| Interfaces |
Opto-insulated serial output RS-232 (to transfer data to a PC) |
| Operating Temperature |
-10°C to 50°C, <80% R.H. |
| Storage Temperature |
-20°C to 60°C, <70% R.H. |
| Safety |
EN 61010, EN 61557-1, EN 61557-5 standards |
| Insulation |
Class 2, double insulation |
| Pollution |
2 |
| Surge Voltage Category |
CAT III 250V (phase to earth) |
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| Power Supply |
Six 1.5V size 'AA' batteries (LR6, AM3, MN 1500) |
| Battery Life |
300 measurements approx. |
| Auto Power Off |
Yes |
| Low Battery Indication |
Yes |
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| Dimensions |
8.74" (L) x 6.38" (W) x 2.25" (D) |
| Weight |
1000gms (2.2 lb) |
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Included Accessories |
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Four each Earth Rods and cables
with banana/crocodile clips, Carrying case, Optical serial
cable and operators manual. |
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