Ground Resistance Testers


Ground Resistance Testers

The range of ground resistance testers offered by ERICO are lightweight and portable for ease of use in the field. Their large display shows required test connections and features a complete automatic test sequence for selected operations.


  • Fall-of-Potential method
  • Auto-Ranging: automatically selects the optimum range
  • Designed to reject high levels of noise and interference
  • Extremely simple to operate: Connect, Press, Read
  • LED on faceplate informs operator of high input noise, high auxiliary rod resistance and fault connections
  • Battery powered
  • Rugged dustproof and rainproof field case
  • Color-coded terminals
  • May also be used for continuity tests on bonding
  • CE Mark


Four testers are offered:

  • Ground Resistance / Earth Tester EST3640 2-pole and 3-pole ground/earth resistance measurements from 0 to 1999Ω
  • Ground Resistance / Earth Tester EST4610 adds 4-point soil resistance measurements from 0 to 1999Ω
  • Ground Resistance / Earth Tester EST4630 2-, 3- and 4-point measurements, plus rechargeable 9.6V NiMH battery pack and durable case
  • Ground Resistance / Earth Tester EST6472* 3- and 4-point measurements up to 99,000; uses the 2-clamp method (selective ground testing); frequency scan from 40 to 5078Hz for optimum test accuracy in electrically noisy environments; automatic calculation of Rho

*Clamp-on Probe ESR182 for use with EST6472


Digital Ground Resistance Tester Model 4610 & 4610 Kits

Digital Ground Resistance Tester Models 4620 & 4630

Ground Resistance Tester Model 3640 & 3640 Kits

Multi-Function Ground Resistance Tester Model 6472