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  • Test ground resistance using the 2 clamp method (no auxiliary rods needed)
  • 2- and 4- pole bond reisistance/continuity measurement (DC reisistance) with automatic polarity reversal
  • 3-pole Fall-of-Potential measurement with manual or automatic frequency selection
  • 4-pole soil resistivity measurement with automatic calculation of Rho and user selection of the Wenner or Schlumberger test method
  • 3-pole earth coupling measurement
  • Manual and automatic frequency scan from 41 to 513 hz for optimum test accuracy in electrically noisy environments
  • Selectable test voltage of 16 or 32 V up to 250 mA of test current
  • Auto-off power management
  • Automatic recognition of all electrode connections and their reisistance value
  • Stores up to 512 complete test results in internal memory
  • Optically isolated USB communication
  • Remote set up and operation of all measurements using DataView software
  • Rechargeable NiMH batteries from wall charger or vehicle power
Interested in a FREE demo? Call 1-800-884-4967 or complete this form to submit your request.


The AEMC model 6471 multi-function ground resistance tester is a portable measurement instrument designed to measure: ground resistance with 2 clamps (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, and soil resistivity (Wenner or Schlumberger method).

The AEMC model 6471 measures from 0.01 to 99.99 kΩ and is autoranging, automatically seeking out the optimum measurement range, test frequency and test current. It's also very easy-to-use. Simply connect the leads, select the test mode, press 'Start' and read the results. up to 512 test results can be stored in internal memory for later recall to the display or downloaded to a PC via DataView software.

The AEMC model 6471 ground resistance tester is CAT IV rated to 50 V and is overvoltage protected to more than 250 V AC against accidental connection to live circuits. The voltage is also displayed on the screen. In the event of a system fault, the model 6471 can withstand 250 V AC.

The AEMC model 6471 multi-function ground resistance tester ships complete with:

  • (2) SR182 current probes
  • NiMH battery pack
  • Optically isolated USB cable
  • DataView software
  • External battery charger
  • AC power cord
  • User manual

The AEMC model 6471 multi-function ground resistance tester is also available in kit form which includes the meter and all accssories above as well as:

  • Two 300 foot color-coded leads on spools
  • Two 100 foot color-coded leads
  • 4 T-shaped auxiliary ground electrodes
  • Set of 5 spaded lugs
  • 100 foot tape measure
  • Carrying bags
AEMC Multi-Function Ground Resistance Tester Model 6471 Specifications
2 Clamp Measurement
Range 0.10 to 500 Ω
Resolution 0.01 Ω to 1 Ω
Measurement frequency Auto: 1367 Hz; Manual: 128 Hz - 1367 Hz - 1758 Hz
3-Point Measurement
Range (Auto-Ranging) 0.09 Ω to 99.9 kΩ
Resolution 0.01 Ω to 100 Ω
Test Voltage Nominal 16 or 32 V RMS user selectable
Resistance measurement frequency 41 to 513 Hz automatic or user selectable
Test current Up to 250 mA
Accuracy ±2% of reading + 1 ct @ 128 Hz
Soil resistivity 4-Point Measurement
Test method Wenner or Schlumberger selectable with automatic calculation in Ω-meters or Ω-feet.
Range (Auto-Ranging) 0.01 to 99.99 kΩ; Max: 999 kΩm
Resolution 0.01 to 100 Ω
Test voltage 16 or 32 V user selectable
Frequency From 41 to 128 Hz selectable
External voltage measurement
Range (Auto-Ranging) 0.1 to 65.0 V AC/DC - DC to 440 Hz
Accuracy 2% of reading + 1 ct
Resistance measurement (Bond testing)
Measurement type 2-pole (with lead resistance compensation) or 4-pole (Kelvin sensing) user selectable
Range (Auto-ranging) 2-pole 0.01 Ω to 99.9 kΩ; 4-pole 0.001 Ω to 99.99 kΩ
Accuracy ±2% of reading + 2 cts
Test voltage 16 V DC (+, - or auto polarity)
Test current Up to 250 mA max
Data Storage
Memory capacity 512 test results
Communication Optically isolated USB