Measurement of Ground Electrode Systems

Product Announcement from Duncan Instruments Canada, Ltd.

Measurement of Ground Electrode Systems-Image

The EM-4055 earth tester is a digital, microprocessor controlled instrument that allows to measure the earth resistance and ground resistivity (using Wenner´s method), as well as to detect parasitic voltages present in the ground.

This instrument is suitable to measure earth systems in power substations, industries, distribution networks, etc., (according to IEC 61557-5)


  • Earth resistance measurement
  • Ground resistivity (Wenner's method)
  • High spurious voltage rejection
  • Spurious voltage measurement
  • 0,01O resolution
  • Up to 20KO resistance range
  • Auto-range
  • Alphanumerical display
  • Heavy duty equipment
  • Automatic interference detection
  • Rechargeable battery
  • Built-in printer (optional)
  • Direct reading of ground resistivity
  • Up to 50m selectable distance
  • 4000 readings memory
  • RS-232 data output
  • IP-54 protection
  • CE mark

Duncan Instruments Canada Ltd. Electronic Measurement Solutions since 1968

Duncan Instruments Canada Ltd. has been specializing in electronic measurement solutions since 1968

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Repair and calibration SERVICES Every test intrument requires periodic maintenace. Our Service Department consist of a Calibration Laboratory and a fully equipped repair shop. Our experienced personnel with extensive documentation library, in-house spare parts inventory and computerized replacement parts data base will restore your instruments to “as new” condition. Our Calibration Laboratory, located in a dedicated environmentally controlled area, is ISO9001 : 2008 registered. We offer certification service to suit your QMS programme. We can calibrate your instrument in 48 hours if required.

All of this to provide you with top quality, reliable and fast service when you need it.


Why Rent? Pay for what you want & for how long you need it!. Review our list of available rental instruments for which one fits your application:

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