The Digital Ground Resistance Tester Model 6471 is a portable measurement instrument designed to measure Ground Resistance with 2 clamps (sold separately), no auxiliary rods, Bond/Connection Resistance (2-Pole and 4-Pole Kelvin sensing), Ground Resistance (3-Pole or 4-Pole), Ground Coupling Resistance, and Selective Ground Resistance, Soil Resistivity (Wenner or Schlumberger method). The Model 6471 measures from 0.01 to 99.99kΩ and is auto-ranging, automatically seeking out the optimum measurement range, test frequency and test current.
Specifications |
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Ground Resistance Tester Model 6471 |
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Features | Parameters |
4-Point Earth Resistance Measurement |
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Range (Auto-Ranging) | 0.01Ω to 99.99kΩ |
Resolution | 0.001 to 10Ω |
Accuracy | ±(2% Reading +1ct) |
Test Voltage | 16 or 32V; 41 to 513Hz |
Test Current | Up to 250mA |
Selective 4-Pole (with optional probes MN82 or SR182) |
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Range (Auto-Ranging) | 0.01Ω to 99.99kΩ |
Resolution | 0.001 to 10Ω |
Accuracy | ±(2% Reading +1ct) |
Test Voltage | 16 or 32V; 41 to 513Hz |
Test Current | Up to 250mA |
3-Point Earth Resistance Measurement |
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Range (Auto-Ranging) | 0.09Ω to 99.9kΩ |
Resolution | 0.01 to 100Ω |
Accuracy | ±(2% Reading +1ct) |
Test Voltage | 16 or 32V; 41 to 513Hz |
Test Current | Up to 250mA |
Soil Resistivity 4-Point Measurement |
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Test method | Wenner or Schlumberger selectable with automatic calculation |
Range (Auto-Ranging) | 0.01Ω to 99.9kΩ; ρ max: 999kΩm |
Resolution | 0.01 to 100Ω |
Accuracy (Typical) | ±(2% Reading +1ct) |
Test Voltage | 16 or 32V; 41 to 128Hz selectable |
2 Clamp Ground Measurement (with optional probes MN82 or SR182) |
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Range (Auto-Ranging) | 0.1 to 500Ω |
Resolution | 0.01 to 1Ω |
Measurement Frequency | Auto: 1611Hz; Manual: 128Hz-1367Hz-1611Hz-1758Hz |
DC Resistance Measurement (Bond Testing) |
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2-Pole (with lead resistance compensation) or 4-Pole (Kelvin sensing) |
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Range (Auto-Ranging) | 2-pole: 0.12Ω to 99.9kΩ
4-pole: 0.020Ω to 99.99kΩ
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Resolution | 2 -pole: 0.01 to 100Ω
4-pole: 0.001 to 10Ω
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Accuracy (Typical) | ±(2% Reading +2ct) |
Test Voltage | 16V DC; (+, - or auto polarity) |
Test Current | Up to 250mA |
Current Measurement (with optional probes MN82 or SR182) |
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Range | 0.01mA to 40A, 16 to 400Hz |
Accuracy (Typical) | ±(3% Reading +2ct) typical |
External Voltage Measurement |
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Range | 0.1 to 65V AC/DC – DC, 15 to 440Hz |
Accuracy | ±(2% Reading +1ct) |
Specifications |
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Ground Resistance Tester Model 6471 |
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Features | Parameters |
2 Clamp Measurement | Yes |
3-Point Test | Yes |
4-Point Test | Direct soil resistivity measurement |
Bond Test (2- and 4-wire) | Yes |
Earth Coupling Test | Yes |
External Voltage Measurement | 0.1 to 65.0V |
Measurement Range | 99,000Ω |
Ranging | Auto-Ranging |
Test Current | Up to 250mA |
Test Frequency | Selectable from 41 to 513Hz |
Specifications |
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Ground Resistance Tester Model 6471 |
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Features | Parameters |
Memory | 512 measurements (64KB) |
Communication | USB 2.0 optically isolated, DataView software included |
Power Source | 9.6V rechargeable battery pack with external 110/220V charger |
Battery Life | 1500 tests typical in automatic mode |
Display | Digital/backlight |
Dimensions | 10.7 x 9.80 x 5.12”
(272 x 248 x 130mm)
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Weight | 7lbs (3.2kg) with battery |
Case | UL V0 Polypropylene |
Operating Temperature | 32° to +113°F
(0° to +45°C)
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Storage Temperature | -40° to 158°F
(-40° to +70°C)
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Relative Humidity | Up to 90% |
Ingress Protection (IP) | IP 53 with cover closed |
EMC | EN 61326-1 |
Safety Compliance | IEC 61010-1, EN 61557, 50V CAT IV, Pollution Degree 2 |
Specifications |
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Ground Resistance Tester Model 6471 |
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Model Overview |
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Model | Cat. No | Description |
6471 (w/o probes) | 2135.48 | Ground Resistance Tester Model 6471 (no probes
Includes:
Carrying bag
110/240V power adapter with US power cord
Optical USB cable
Rechargeable NiMH battery pack
USB stick with DataView® software
Ground tester workbook
User manual.
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6471 (with probes) | 2135.49 | Ground Resistance Tester Model 6471 (with probes)
Includes:
Carrying bag
Set of two SR182 current probes
110/240V power adapter with US power cord
Optical USB cable
Rechargeable NiMH battery pack
USB stick with DataView® software
Ground tester workbook
User manual.
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6471 Kit-300ft (with probes) | 2135.50 | Ground Resistance Tester Model 6471 Kit-300ft (with probes)
Includes:
Meter
two carrying bags
two 300 ft color-coded leads on spools (red/blue)
two 100 ft color-coded leads (hand-tied, green/black)
two 5 ft color-coded leads (red/blue)
set of two SR182 current probes
110/240V power adapter with US power cord
optical USB cable
four T-shaped auxiliary ground electrodes
set of five spaded lugs
one 100 ft tape measure
rechargeable NiMH battery
USB stick with DataView® software, ground tester work-book and user manual.
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6471 Kit-300ft (w/o probes) | 2135.60 | Ground Resistance Tester Model 6471 Kit-300ft (no probes) |
6471 Kit-500ft (w/o probes) | 2135.61 | Ground Resistance Tester Model 6471 Kit-500ft (no probes) |