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CA6471 Earth & Resistivity Tester

CA6471 Earth & Resistivity Tester

Model: CA 6471

Origin: Chauvin-Arnoux / France

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C.A 6471: 5-in-1 earth and resistivity tester

Ergonomic, comprehensive and accurate, the C.A 6471 offers direct access to all the measurements on the front panel by means of a rotary switch. Compact because it has been designed for on-site use, the C.A 6471 is rugged and leakproof. To simplify connection, the 4 terminals for connecting the stakes are colour-coded to help identify them.

The C.A 6471 includes a large backlit LCD screen and a battery which is rechargeable with an external charger connected to the mains or to a vehicle cigarette lighter.

It is equipped with a function for direct, ordered storage of the measurement results. A USB communication output can be used to export the data onto a PC in order to process them with the Ground Tester Transfer software.

The C.A 6471 guarantee the reliability of measurements carried out with:

  • Traditional stake-based methods
  • Self-diagnosis when each measurement starts, so that any faults liable to affect the measurements (bad connections or presence of disturbance signals) are indicated
  • Large measurement ranges: 0.001 W to 100 kW
  • Adjustment of the measurement frequency between 41 Hz and 512 Hz

The C.A 6471 are equipped with sophisticated calculation functions:

  • For earth coupling measurement, all you have to do is carry out the 3 measurements necessary, one after the other, and the testers then calculate the coupling coefficient automatically
  • When measuring soil resistivity, the distances used for the measurement can be programmed to allow the instruments to calculate r automatically with the Wenner or Schlumberger methods.

Technical Datasheet Earth & Resistivity Tester C.A 6471

Model C.A 6471
Reference P01126505
Manufacturer - Origin
Chauvin Arnoux - France
Earth resistance Measurement with 2 clamps 
Range 0.01 Ω to 500 Ω
Resolution 0.01 Ω to 1 Ω
Measurement frequency Auto: 1367 Hz ; Manual: 128 Hz - 1367 Hz - 1611 Hz - 1758 Hz
Earth resistance 3-pole method
Range 0.01 Ω to 99.99 kΩ
Resolution 0.01 Ω to 100 Ω
Test voltage 16 V or 32 Vrms rated voltage, selectable by user
Measurement frequency 41 Hz to 512 Hz, automatic or manual
Test current Up to 250 mA
Accuracy ±2 % of value + 1 count to 128 Hz
Coupling measurement Yes
Earth resistance 4P measurements / 4P + measurements with clamps 
Range 0.001 Ω to 99.99 kΩ
Resolution 0.001 Ω to 100 Ω
Test voltage 16 V or 32 V selectable
Measurement frequency 41 Hz to 512 Hz automatic or manual
Test current Up to 250 mA
Accuracy ±2 % of value ±1 count
Soil resistivity measurement
Measurement method Wenner or Schlumberger method with automatic calculation of results and display in Ω-meter
Range (automatic selection) 0.01 to 99.99 kΩ; ρ max. 999 kΩm
Resolution 0.01 Ω to 100 Ω
Test voltage 16 V or 32 V, selectable
Measurement frequency 41 Hz to 128 Hz, selectable
External voltage measurement 
Range (automatic selection) 0.1 to 65.0 VAC/DC – DC to 450 Hz
Accuracy ±2 % of value + 1 count
Resistance measurement/ continuity and bounding 
Type of measurement 2 wire or 4 wire method, selectable by user
Range (automatic selection) 2 wire: 0.01 Ω  to 99.9 kΩ – 4 wire: 0.001 Ω  to 99.99 kΩ
Accuracy ±2 % of value + 2 counts
Test voltage 16 VDC (polarity +, - or auto)
Test current > 200 mA max. for R < 20 Ω
Data storage
Storage capacity 512 test results
Communication Optically-isolated USB
Other features 
Power supply rechargeable NiMH battery
Battery-charger power supply External power supply with 18 VDC / 1.9 A output or 12 VDC vehicle power supply
Electrical safety 50 V CAT IV, IEC 61010 & IEC 61557
Protection IP53
Dimensions / Weight 272 x 250 x 128 mm / 3.2 kg

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