Feature of Ground Resistance Tester Model 6471
- Measuring range of earth resistance: 0-2000Ω. 0/20/200/2000 ohm ± (2%+3)with 0.01 ohm
- Measuring range of earth voltage: 0-30V (3%+5)
- An LED green light indicates the normal operating mode.
- 31/2-digit LCD for more direct and convenient reading.
- Low Battery Warning:
- on LCD indicates a deficiency of 12V battery.
- LED red lighting off indicates a deficiency of 1.5V battery.
- Fast Response: measure earth resistance, about 5 seconds. Measure earth voltage, about 2 seconds.
- Withstand voltage: AC 500V, 1 minute between circuit and outer casing.
- Overload protection: on earth voltage, can withstand 300V AC 1 minute. on earth resistance, can withstand 200V AC 10 seconds.
- Power supply, six 1.5V AA batteries, one 12V battery 23A. (not include)
Specification of Ground Resistance Tester Model 6471
| 4-Point Earth Resistance Measurement | |
| Range (Auto-Ranging) | 0.01 Ω to 99.99 kΩ |
| Resolution | (0.001 to 10) Ω |
| Accuracy | ±(2 % Reading +1 ct) |
| Test Voltage | (16 or 32) V; (41 to 513) Hz |
| Test Current | Up to 250 mA |
| Selective 4-Pole (with optional probes MN82 or SR182) | |
| Same characteristics as with 4-point earth resistance measurement | |
| 3-Point Earth Resistance Measurement | |
| Range (Auto-Ranging) | 0.09 Ω to 99.9 kΩ |
| Resolution | (0.01 to 100) Ω |
| Accuracy | ±(2 % Reading +1 ct) |
| Test Voltage | (16 or 32) V; (41 to 513) Hz |
| Test Current | Up to 250 mA |
| Soil Resistivity 4-Point Measurement | |
| Test method | Wenner or Schlumberger selectable with automatic calculation |
| Range (Auto-Ranging) | 0.01 Ω to 99.9 kΩ; ρ max: 999 kΩm |
| Resolution | (0.01 to 100) Ω |
| Accuracy (Typical) | ±(2 % Reading +1 ct) |
| Test Voltage | (16 or 32) V; (41 to 128) Hz selectable |
| 2 Clamp Ground Measurement (with optional probes MN82 or SR182) | |
| Range (Auto-Ranging) | (0.1 to 500) Ω |
| Resolution | (0.01 to 1) Ω |
| Measurement Frequency | Auto: 1611 Hz; Manual: 128 Hz-1367 Hz-1611 Hz-1758 Hz |
| DC Resistance Measurement (Bond Testing) 2-Pole (with lead resistance compensation) or 4-Pole (Kelvin sensing) |
|
| Range (Auto-Ranging) | 2-pole: 0.12 Ω to 99.9 kΩ 4-pole: 0.020 Ω to 99.99 kΩ |
| Resolution | 2 -pole: (0.01 to 100) Ω 4-pole: (0.001 to 10) Ω |
| Accuracy (Typical) | ±(2 % Reading +2 ct) |
| Test Voltage | 16 V DC; (+, – or auto polarity) |
| Test Current | Up to 250 mA |
| Current Measurement (with optional probes MN82 or SR182) | |
| Range | 0.01 mA to 40 A, (16 to 400) Hz |
| Accuracy (Typical) | ±(3 % Reading +2 ct) typical |
| External Voltage Measurement | |
| Range | (0.1 to 65) V AC/DC – DC, (15 to 440) Hz |
| Accuracy | ±(2 % Reading +1 ct) |
| General Features | |
| Memory | 512 measurements (64 KB) |
| Communication | USB 2.0 optically isolated, DataView software included |
| Power Source | 9.6 V rechargeable battery pack with external 110/220 V charger |
| Battery Life | 1500 tests typical in automatic mode |
| Dimensions | (10.7 x 9.80 x 5.12) in (272 x 248 x 130) mm |
| Weight | 7 lb (3.2 kg) with battery |
| Case | UL V0 Polypropylene |
| Operating Temperature | (32 to 113) °F (0 to +5) °C |
| Storage Temperature | (-40 to 158) °F (-40 to 70) °C |
| Relative Humidity | Up to 90 % RH |
| Ingress Protection (IP) | IP 53 with cover closed |
| EMC | EN 61326-1 |
| Safety Compliance | IEC 61010-1, EN 61557, 50 V CAT IV, Pollution Degree 2 |
