Extech GRT350 4-Wire Portable Earth Ground Resistance/Resistivity Tester

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Extech GRT350 4-Wire Portable Earth Ground Resistance/Resistivity Tester is designed to read ground resistance and soil resistivity. The Extech GRT350 features Earth Ground Resistance measuring in 3 ranges, from 20Ω to 2000Ω, and Resistivity from 0.06kΩm to 628kΩm. Features 4-wire, 3-wire, and 2-wire measuring, captures up to 200 readings for recall, and features automatic I (current) and P (potential) spike tests.

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Characteristics:	Extech GRT350 4-Wire Portable Earth Ground Resistance/Resistivity Tester
	Full, dual line LCD
	Autoranging function
	Performs tests for earth resistivity (p)
	Performs 4-wire, 3-wre, and 2-wire testing
	Automatic I (current) spike analysis
	Automatic P (potential) spike analysis
	Test Hold feature
	AC Earth Voltage
	Automatically shuts off when not in use
	Indicates overrange and low battery
	Store/recall up to 200 test readings
Includes:	Built-in hard carrying case, test leads with alligator clips, 4 auxiliary earth bars, and eight 1.5V AA batteries

Specifications:	Extech GRT350 Portable 4-Wire Earth Ground Resistance/Resistivity Tester
Earth Ground Resistance	20Ω/200Ω/2000Ω
Accuracy	±(2%rdg+3d)
Resolution	0.01Ω/ 0.1Ω/1Ω
Test Current / Frequency	approx. 2mA/820Hz
Earth Resistivity (r)	0.06 to 6.28 kΩm, 0.62 to 62.8 kΩm, 6.28 to 628 kΩm
AC Earth Voltage	0 to 300VAC
Accuracy	±(2%rdg+3d)
Dimensions	9.8 x 7.8 x 4.3" (250 x 190 x 110mm)
Weight	3.15lbs (1.43kg) - batteries included

Applications:	Extech GRT350 4-Wire Portable Earth Ground Resistance/Resistivity Tester
	Ground measurements on Railroad signaling systems
	Cell tower grounding verification
	Ground electrode system resistance
	Ground system maintenance

Extech GRT350 4-Wire Portable Earth Ground Resistance/Resistivity Tester

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