Ground Resistance Testers

Why Choose AEMC® Instruments Ground Resistance Testers?

We know it’s essential for you to have the ability to properly measure ground resistance to prevent costly downtime due to service interruptions caused by poor grounds. That’s why we offer one of the largest selections of easy-to-use ground resistance testers.

Pioneers of Innovation

We pioneered the use of clamp-on ground resistance testing and we regularly review and improve the features of our instruments so you can expect AEMC ground resistance testers to be the highest quality, the most complete package, and the simplest way to learn about and ensure ground integrity.

Our revolutionary Clamp-On Ground Resistance Testers will save you time and money with the ability to measure resistance without disconnecting the ground system.

We developed and introduced the only ground tester capable of testing energized transmission towers (Models 6472/6474). It can also test ground resistance of individual power transmission tower legs (as well as total resistance) without disconnecting the overhead ground wire.

Widest Selection of Ground Resistance Testing Instruments

Whether you perform a simple point-to-point test, a clamp-on ground resistance test, or a more complete 3-or 4-Point Fall-of-Potential test, AEMC® Instruments manufactures the right instrument to fit your application.

Accredited Ground Resistance Testing Seminars

Our experts understand the processes for earth resistance testing as referenced in the IEEE Standard No. 81. and we want you to confidently understand it too. We conduct accredited one day ground resistance technical training seminars throughout the country. Our course, comprised of both class and field training, will give you all the information you need to understand proper sizing and testing of grounding systems.

Private Seminars & Demonstrations

We also offer personalized private seminars. Have questions on how to use AEMC® Ground Resistance Testers? We're happy to provide a demonstration with our technical experts. Contact us at (800) 343-1391 or email us at sales@aemc.com

Tech Support

Our experts are available for field support in person or on the phone while you're at a job site.

AEMC provides complete technical support through our technical hot line 800-945-2362 (ext.351), speak directly to one of our tech support team members. Or e-mail your clamp meter questions to our tech team techsupport@aemc.com

Ground Resistance Testers Selection Chart

We created this all-in-one comparison document to help you select a proper Ground Resistance Tester for your specific needs.

GROUND RESISTANCE TESTERS SELECTION CHART

Ground Resistance Testers

  • Ground Resistance Tester Model 4620

    Cat. #2130.43
    Range 0.01 to 2000Ω, Resolution 0.001 to 10Ω, 4-Point test
    The Digital Ground Resistance Tester Model 4620 performs ground resistance and soil resistivity tests. This direct reading testers measures from 0 to 2000Ω, and is auto-ranging, so it automatically seeks outs the optimum measurement range.

    The Ground Resistance Tester Model 4620 is also available in complete Kits (150ft, 300ft & 500 ft).

  • Ground Resistance Tester Model 6416

    Cat. #2141.01
    Range 0 to 1500Ω, Alarm, Frequency selection, 300 measurement storage
    The Ground Resistance Tester Model 6416 measures ground rod and grid resistance and impedance without the use of auxiliary rods. Clamp-on ground resistance testers can be used in multi-grounded systems without disconnecting or de-energizing the ground system under test. The Model 6416 simply clamps around the grounding electrode or conductor and measures the resistance to ground.
    Ground Tester | Ground Rod Tester | Earth Ground Tester | Ground Continuity Tester | Ground Wire Tester

  • Ground Resistance Tester Model 6417

    Cat. #2141.02
    Range 0 to 1500Ω, Alarm, Frequency selection, 2000 measurement storage, Bluetooth
    The Ground Resistance Tester Model 6417 measures ground rod and grid resistance and impedance without the use of auxiliary rods. Clamp-on ground resistance testers can be used in multi-grounded systems without disconnecting or de-energizing the ground system under test. The Model 6417 simply clamps around the grounding electrode or conductor and measures the resistance to ground. Includes Bluetooth for connecting to a computer running DataView, and an app for communication with an AndroidTM device.
    Ground Tester | Ground Rod Tester | Earth Ground Tester | Ground Continuity Tester | Ground Wire Tester

  • Ground Resistance Tester Model 6418

    Cat. #2141.03
    Range 0 to 1200Ω, Alarm, 300 measurement storage
    The Ground Resistance Tester Model 6418 measures ground rod, busbar, and grid resistance and impedance without the use of auxiliary rods. Clamp-on ground resistance testers can be used in multi-grounded systems without disconnecting or de-energizing the ground system under test. The Model 6418 simply clamps around the grounding electrode or conductor and measures the resistance to ground.
    Ground Tester | Ground Rod Tester | Earth Ground Tester | Ground Continuity Tester | Ground Wire Tester

  • Ground Resistance Tester Model 6422 (Digital, 3-Point)

    Cat. #2135.55
    Range 0.5 to 50Ω, Automatic Test Current 20mA max, ±10V peak open Voltage, >1500 measurements @100Ω in 3 P mode

    The Digital Ground Resistance Tester Model 6422 performs 2-pole and 3-pole ground resistance measurement. This direct reading tester is auto-ranging, so it automatically seeks out the optimum measurement range.

  • Ground Resistance Tester Model 6424 (Digital, 3-Point)

    Cat. #2135.57
    Range 0.5 to 50Ω, Automatic Test Current 20mA max, ±10V peak open Voltage, >1500 measurements @100Ω in 3 P mode

    The Digital Ground Resistance Tester Model 6424 performs 2-pole and 3-pole ground resistance measurement. This direct reading tester is auto-ranging, so it automatically seeks out the optimum measurement range.


    Ground Tester | Ground Rod Tester | Earth Ground Tester | Ground Continuity Tester | Ground Wire Tester

  • Ground Resistance Tester Model 6471

    Cat. #2135.48
    Range 0.01 to 99,000Ω, Resolution 0.001 to 10Ω, Measures grounding resistance, earth coupling, soil resistivity, and bonding
    The Digital Ground Resistance Tester Model 6471 performs grounding resistance, earth coupling measurement, soil resistivity and bonding/connection tests. Measures from 0.01 to 99,000Ω, and is auto-ranging (automatically seeks outs optimum measurement range). Up to 512 test results can be stored in internal memory for later recall to the display or download to a computer running DataView (free) for analysis and report generation.

    Also available in complete Kits (300ft and 500ft).

  • Ground Resistance Tester Model 6472

    Cat. #2135.51
    4-Point soil resistivity (Wenner or Schlumberger), 2- and 4-Wire bond testing, ground resistance testing, optically isolated USB communication
    The Digital Ground Resistance Tester Model 6472 performs bond resistance, ground resistance, soil resistivity, earth coupling, and Step & Touch potential tests. When used in combination with the GroundFlex® Adapter Model 6474 (factory supplied product only), Power Transmission Tower and Tower Leg Ground Resistance testing is also available. Up to 512 test results can be stored in internal memory for later recall to the display or download to a computer running DataView (free) for analysis and report generation.

  • GroundFlex® Field Kit Model 6474

    Cat. #2136.03
    Includes GroundFlex® Adapter Model 6474 and Ground Resistance Tester Model 6472
    This is the only system on the market capable of testing ground resistance of individual power transmission tower legs (as well as total resistance) without disconnecting the overhead ground wire. Features include testing both ground resistance of tower legs (individually and total) and overhead ground wires. Measures leakage current through the tower legs. Tests at frequencies up to 5kHz to profile impedance.

  • Ground Resistance Tester Model 4630

    Cat. #2130.44
    Range 0.01 to 2000Ω, Resolution 0.001 to 10Ω, 4-Point test
    The Digital Ground Resistance Tester Model 4630 performs ground resistance and soil resistivity tests. Measures from 0 to 2000Ω, and is auto-ranging (automatically seeks outs optimum measurement range). Designed to reject high levels of interference. Ideal for maintenance crews performing numerous tests.

    Also available in complete Kits (150ft, 300ft & 500ft).

  • AC Current Probe Model MN72 for use only with Model 6424

    Cat. #2153.06
    200A, Lead
    Current probe with a measurement range of 5mA to 20A, and transformation ratio of 1000:1. Maximum clamping diameter is 0.78" (20mm). Includes 6.5' (2m) lead with proprietary CA connector. Designed for Multi-Function Installation Testers Models C.A 6116/6116N, and C.A 6117.

  • Multi-Function Installation Tester Model C.A 6117

    Cat. #2138.07
    Measures voltage, current via clamp, power, waveforms, and harmonics; includes DataView® software

    Multi-function instrument for testing voltage, current via clamp, power, waveforms and harmonics. Stores up to 1,000 tests, which can be downloaded and processed with DataView® (included).

  • Ground Tester Kit-150ft

    Cat. #2135.35

    Ground Resistance Test Kit for 3-Point Testing - 150 ft

  • 5000.92 - Calibration Checker for Ground Tester Models 6422 & 6424

    Cat. #5000.92

    Clip – Calibration Checker for Ground Tester Models 6422 & 6424

  • Ground Rods – Set of 2 (17 inch)

    Cat. #2135.44

    Ground Rods – Set of 2, 17" Stainless Steel T-shaped Auxiliary Ground Electrodes

  • Ground Test Kit for 4-Point Testing - 300 ft

    Cat. #2135.36

    Test Kit for 4-Point testing includes two 300 ft color-coded leads on spools, two 100 ft color-coded leads (hand-tied, green/black), two 5 ft color-coded leads (blue/red), four 14.5" T-shaped auxiliary ground electrodes, one set of five spaded lugs, 100 ft tape measure and carrying bag.

  • Ground Test Kit for 4-Point Testing - 500 ft

    Cat. #2135.37

    Test Kit for 4-Point testing includes two 500 ft color-coded leads on spools, two 100 ft color-coded leads (hand-tied, green/black), one 30 ft lead (green), two 5 ft color-coded leads (blue/red), four 14.5" T-shaped auxiliary ground electrodes, one set of five spaded lugs, 100 ft tape measure and carrying bag.

  • Static Ground and Bond Test System Kit

    Cat. #2155.01
    Emergency Responder Static Ground and Bond Test System Kit
    Ensure the safety of your first responder and hazmat teams with our state-of-the-art Static Ground and Bond Test System Kit. Designed to meet the highest industry standards, our kit provides you with the confidence and reliability you need to reduce or eliminate the potential for sparks and explosion due to static electricity.

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