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Amprobe GP-2A Ground Resistance & Resistivity Tester
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Item Number: GP-2A
Manufacturer: Amprobe
Part Number: GP-2A
* Whole number only
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Amprobe GP-2A Ground Resistance & Resistivity Tester
Poor grounding is dangerous and contributes to unnecessary downtime and increases the risk of equipment failure. The Amprobe GP-2A Earth Ground Resistance Tester provides accurate and reliable measurements for ground resistance and soil resistivity to assure the safety and performance of an electrical system. The GP-2A is complete with PC software that allows the user to download critical recorded measurements and to create professional reports for customers.
Features
- Measures earth ground resistance - 3 point (fall of potential) or 2 point tests
- Automatically calculates resistivity - 4 point test
- Automatic voltage measurement prevents false measurements
- Automatically applies three testing frequencies for the most accurate readings
- Test leads, auxiliary electrodes and software are included for complete instrument
- Autoranging
- 999 internal memory locations to store measurements
- RS-232 download to a personal computer
Technical Specifications
Ground resistance
(2 and 3-wire method) |
0.01 Ω – 19.99 Ω / 199.9 Ω / 1999 Ω
19.99 kΩ / 49.9 kΩ |
±(2.5% rdg + 2 LSD) |
| Ground Resistivity (4-wire) |
0.06 Ωm – 19.99 Ωm / 199.9 Ωm / 1999 Ωm
19.99 kΩm / 199.9 kΩm / 314 kΩm |
±(2.5% rdg + 2 LSD) |
| Voltage Measurement |
0 V – 460V |
±(2.5% rdg + 2 LSD) |
| Ranging |
Auto |
| Noise Voltage Detection |
Yes |
| Display Backlight |
Yes |
| Data Storage |
up to 999 readings |
| PC Connection |
Yes |
| Auto Power Off |
Yes |
| Low Battery Indication |
Yes |
| Resistance Measurement |
Open circuit voltage ≤ 25 Vrms
Test current ≤12 mA
Measuring Frequency 77.5 Hz ± 1 Hz |
| Measuring Range |
3- and 2-wire earth resistance measurement: 0.08 Ω – 49.9 kΩ
Earth resistivity (4-wire): 0.50 Ωm – 314 kΩm |
| Maximum Deviations |
Influence factor |
Deviation influence |
| E1 Position |
0.3% |
| E2 Supply voltage |
0.1% |
| E3 Temperature |
0.1% |
| E4 Serial interference voltage |
0.4% |
| E5 Probe and auxiliary probe resistance |
0.9% |
| Electromagnetic Compatibility |
Complies with IEC/EN 61326 |
| Measuring Function |
Earth ground resistance – 3 point (fall of potential) or 2 point tests
Earth resistivity – 4 point test
Noise voltage |
| Display |
LCD with backlight, visible area 73 x 65 mm |
| Operating Altitude |
≤ 2000 meters |
| Operating Temperature |
0 °C to +40 °C (32 °F to 104 °F) |
| Storage Temperature |
-10 °C to +60 °C (14 °F to 140 °F) |
Humidity
(without condensation) |
<80% |
| Power Supply |
Six 1.5V batteries AA R6 MN1500 or six 1.2V AA R6 Ni-MH 2100mA rechargeable batteries |
| Battery Life |
Approximately 500 tests |
| Auto Power Off |
3 minutes |
| Overvoltage Category |
CAT III 240V safety rated (phase to earth), maximum 415V between inputs |
| Safety |
IEC/EN 61010-1, CAT III 240 V, pollution degree 2
IEC/EN 61010-031 for test lead accessories
IEC/EN 61557-1/-5 |
| EMC |
IEC/EN 61326 |
| Size (H x W x L) |
Approximately 235 x 165 x 75 mm (9.25 x 6.50 x 2.95 in) |
| Weight |
Approximately 1 kg (2.2 lb) with batteries installed |
| Included Accessories |
Four ground stakes, test lead set, alligator clip set, USB cable, USB driver software, carrying case and users manual |
| Warranty |
One year |
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