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  1. Ground Resistance Meters

Extech GRT350 Ground Resistance Tester

4-wire tester that measures earth ground resistance from 2 to 2000 Ohm and resistivity from 0.06 to 628 kOhm-m.

Extech GRT350 Ground Resistance Tester
Extech GRT350 Ground Resistance Tester
  • Extech GRT350 Ground Resistance Tester
    Extech GRT350 Ground Resistance Tester
  • Extech GRT350 Ground Resistance Tester Accessories
    Extech GRT350 Ground Resistance Tester Accessories
Extech GRT350 Ground Resistance Tester
Extech GRT350 Ground Resistance Tester
Extech GRT350 Ground Resistance Tester
Extech GRT350 Ground Resistance Tester Accessories
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Overview

Features

  • 2-, 3-, & 4-wire testing
  • 0 to 300V AC earth voltage
  • Store & recall up to 200 test results
  • Autoranging, test hold, data hold, & auto power off
  • Automatic I (current) & P (potential) spike checks
  • CE & CAT IV 300V approvals
  • 1 Year warranty

What's in the Box

  • Built-in hard carry case
  • Alligator clip test leads
  • 4 auxiliary earth bars
  • 8 AA batteries

Description

The Extech GRT350 Ground Resistance Tester is used to ensure good ground system installation. Use the GRT350 to check the resistance of the ground as well as the soil resistivity before you install your ground rods. This tester includes all hardware necessary to measure Earth Ground Resistance in 3 ranges, from 20 to 2000Ω, and Resistivity from 0.06 to 628kΩm.

Electricians and technicians should also check their ground system periodically for predictive maintenance ensuring the resistance level doesn't exceed the allowed safety level.

The GRT350 has a CATIV 300V safety rating. That means it's designed for use with devices connected to raw voltage distribution lines and/or located outside (Pole Transformers, Service Drops, Overhead/Underground lines etc.). Maximum voltage rating of these devices shouldn't exceed 300V.

Documents

Spec Sheets

  • Extech GRT350 Ground Resistance Tester Datasheet PDF (442 KB)

Manuals

  • Extech GRT350 Ground Resistance Tester Manual PDF (1008 KB)

Links

  • All possible part numbers

Need Help? Call a Temperature engineer at 1-800-884-4967

We're open 8:00 am to 5:30 pm ET

Luke M. headshot Luke M.
Applications Engineer
6 years at Instrumart
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Applications Engineer
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Senior Applications Engineer
19 years at Instrumart
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Applications Engineer
Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
Dwight M. headshot Dwight M.
Senior Applications Engineer
28 years at Instrumart
Ron J. headshot Ron J.
Temperature Engineering Lead
29 years at Instrumart
Luke M. headshot Luke M.
Applications Engineer
6 years at Instrumart
Rhys D. headshot Rhys D.
Applications Engineer
Alex A. headshot Alex A.
Senior Applications Engineer
19 years at Instrumart
David S. headshot David S.
Applications Engineer
Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
Dwight M. headshot Dwight M.
Senior Applications Engineer
28 years at Instrumart
Ron J. headshot Ron J.
Temperature Engineering Lead
29 years at Instrumart
Luke M. headshot Luke M.
Applications Engineer
6 years at Instrumart

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Extech GRT350 Ground Resistance Tester
Extech GRT350 Ground Resistance Tester
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