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.

• Ground Integrity Measurement
• 3- and 4-Point Fall-of-Potential measurement with manual or automatic frequency selection
• 4-Point soil resistivity measurement with automatic calculation of Rho (ρ) and user selection of the Wenner or Schlumberger test method
• 2- and 4-Wire DC resistance measurement (Bond testing) with automatic polarity reversal
• 3-Point Earth coupling measurement
• Automatic frequency scan from (41 to 5078) Hz for optimum test accuracy in electrically noisy environments
• Selectable test voltage limit of (10,16, 32, or 60) V with up to 250 mA of test current
• Automatic recognition of all electrode connections and measurement of their resistance value
• Determines bonding condition of overhead ground conductors
• Auto Power OFF management
• Optically isolated USB communication
• Remote set up and operation of all measurements using DataView® software supplied
• Rechargeable NiMH batteries from wall charger or vehicle power (Cat. #2135.43 needed for vehicle power)
• Rugged dustproof and water-resistant field case (IP53 rated in closed position)
• Includes DataView® software for data retrieval, real-time display, analysis, automatic report generation and system configuration