High resolution earth tester

  • High resolution of 1 mΩ, ideal for large earth/ground systems
  • Versatile tests modes
  • High accuracy for earth/ground electrode grid and soil resistivity tests
  • Rechargeable battery power that can last all day with a fast re-charge (up to 10 hours)
  • Robust instrument with IP65 protection
  • Automatic test frequency selection, with filters and high current features
  • Diagnostic trace display
  • Data storage
  • Large colour display that shows numeric and graphical results
  • Optional earth testing kit (ETK) available

The DET2/3 high resolution earth tester is a robust and compact automatic earth/ground) test instrument designed to measure earth electrode resistance and soil resistivity. For use on large or more complex earth systems, which include communications earth systems and difficult test environments, it can be used to test in accordance with BS 7430 (earthing/grounding), BS-EN-62305 (lightning protection), BS-EN-50122-1 (railway applications), and IEEE Standard 81.

Test frequency, test current, and filtering can be quickly and easily adjusted so that adverse conditions, which can influence the test, can be overcome, and a wide band of test current frequencies, with a resolution of 0.5 Hz, can be used to eliminate errors caused by noise in the earth.

With its microprocessor controlled system it provides a flexible and ‘user-friendly’ approach to earth/ground tests by the provision of excellent error detection capabilities and full test information shown on a large colour display. The DET2/3 can provide a live trace of its measurements, which graphically shows the amount of noise from the system under test - a powerful diagnostic tool for the expert earth/ground test engineer.

The DET2/3 also includes an automatic frequency selection feature that scans for frequencies with the lowest noise level and then runs a test at that frequency. The selected test current frequency, test current level, and the increased filtering option are stored in memory for use in subsequent tests.

Use of the latest processors and a large internal memory allows for immediate calculations of resistivity (Wenner or Schlumberger method) and the ability to save a complete days’ worth of test results. Test result data can be downloaded directly through a USB drive or straight to a Windows PC running PowerDB™ software.

Technical Documents
Technical guide
Noise Control in Ground Testing
DET2/3 Firmware
DET2/3 Firmware Update


* In order to update to the latest firmware version (3.0.2) please contact your local Megger service and calibration centre. *



DET2/3 Firmware Update Instructions
117.6 KB | 10/12/21