AEMC 6471 Ground Resistance Tester

The Digital Ground Resistance Tester 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

2 Clamp Measurement

Range: 0.10 to 500Ω

Resolution: 0.01 to 1Ω

Measurement Frequency:

• Auto: 1611Hz
• Manual: 128Hz-1367Hz-1611Hz-1758Hz

3-Point Measurement

Range (Auto-Ranging): 0.09Ω to 99.9kΩ

Resolution: 0.01Ω to 100Ω

Test Voltage: Nominal 16 or 32Vrms user selectable

Resistance Measurement Frequency: 41 to 513Hz automatic or user selectable

Test Current: Up to 250mA

Accuracy: ±2% of Reading + 1ct @ 128Hz

Soil Resistivity 4-Point Measurement

Test Method: Wenner or Schlumberger selectable with automatic calculation in Ω-meters

Range (Auto-Ranging): 0.01 to 99.99kΩ; ρ max: 999kΩm

Resolution: 0.001 to 10Ω

Test Voltage: 16 or 32V user selectable

Frequency: From 41 to 128Hz selectable

External Voltage Measurement

Range (Auto-Ranging): 0.1 to 65.0Vac/dc – DC to 440Hz

Accuracy: ±2% of Reading + 1ct

Resistance Measurement (Bond Testing)

Measurement Type: 2-Pole (with lead resistance compensation) or 4-Pole (Kelvin sensing) user selectable Range (Auto-Ranging) 2-Pole 0.12 to 99.99kΩ; 4-Pole 0.02 to 99.99kΩ

Accuracy: ±2% of Reading + 2cts

Test Voltage: 16Vdc (+, – or auto polarity)

Test Current: Up to 250mA max

Data Storage

Memory Capacity: 512 test results (64KB)

Communication: Optically Isolated USB

Power Source 9.6V rechargeable battery pack

Recharging Source: 110/220V, 50/60Hz external charger with 18Vdc, 1.9A output