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Extech Clamp-on Ground Resistance Tester with NIST Certificate

Extech Clamp-on Ground Resistance Tester with NIST Certificate

Item #: E411-2357
Manufacturer: Extech Instruments
Manufacturer Item #: 382357-NIST
Product Type: Clamp-on Ground Resistance Tester


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Enables non-contact measurements of ground conductors without need for auxiliary grounding spikes

Features & Applications:

Extech Clamp-on Ground Resistance Tester with NIST Certificate enables non-contact measurements of ground conductors without need for auxiliary ground spikes.

Features:

  • Autoranging ground resistance measurements from 0.03ohm to 1500ohm with 0.02ohm resolution
  • True RMS AC Leakage current range of 0.2mA to 15.00A with 0.001 mA maximum resolution
  • 0.9" (23mm) Jaw size for large ground rods
  • Simplifies ground resistance measurements on multiple point ground systems
  • Verification resistors confirm accuracy of meter
  • Ground resistance measurements down to 0.03% with 0.02% maximum resolution
  • Programmable Hi/Lo alarm
  • Automatic self calibration when powered on
  • 9999 count high contrast LCD display
  • Electrical noise detection feature prevents inaccurate readings
  • Data hold and continuity beeper
  • Complete with 9V battery, resistance check plate and carrying case
  • NIST Certificate of Calibration

Applications:

  • Verify resistance of cellular and communcation tower ground grids
  • Check utility transmission
    systems and grounding rods
  • Maintenance on electric transportation systems
  • Ideal for grounding systems in sub-stations,
    factories and office buildings
Spec Summary:
Specifications Range Resolution Accuracy (%rdg)
Ground Resistance:






Leakage Current AC:




Continuity:

Dimensions:

Weight: 		0.03 to 9.99Ω
10.0 to 99.9Ω
100.0 to 199.9Ω
200.0 to 399.9Ω
400.0 to 599.9Ω
600.0 to 999.9Ω
1000 to 1,500Ω
0.200 to 0.999mA
1.000 to 9.99mA
10.00 to 99.9mA
100.0 to 750.0mA
0.20 to 15.00A
Beep if less than 40Ω
(approximately)
10.2 x 4.4 x 1.9"
(258 x 110 x 47mm)
24.7oz. (700g) 		0.02Ω
0.1Ω
0.4Ω
2Ω
5Ω
10Ω
30Ω
0.001mA
0.01mA
0.1mA
0.1mA
0.01A 		±(1.5% + 0.1Ω)
±(2.0% + 0.3Ω)
±(3.0% + 1.0Ω) typical
±(5.0% + 5Ω) typical
±(10% + 10Ω) typical
Not specified
Not specified
±(2.5% + 0.05mA)
±(2.5% + 0.05mA)
±(2.0% + 0.3mA)
±(2.5% + 3mA)
±(2.0% + 0.05A)