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

The Digital Ground Resistance Tester Model 6422 performs resistance and 3-pole ground resistance measurements. This direct reading tester is auto-ranging, so it automatically seeks out the optimum measurement range. The Model 6422 is easy to use – simply connect the leads, press to measure, and read. The large LCD also indicates low battery status and over range.

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

Ground Resistance (2P Mode)
Measurement Range 0.05-99.99Ω 80.0-999.9Ω 0.800-9.999kΩ 8.00-50.00kΩ
Resolution 0.01Ω 0.1Ω 1Ω 0Ω
Intrinsic Uncertainty ± (2%R + 10 ct) ± (2%R + 2 ct) ±(2%R + 1 ct) ±(2%R + 1 ct)
Ground Resistance (3P Mode)
Measurement Range 0.50-99.99Ω 80.00-999.99Ω 0.800-2.000kΩ –
Resolution 0.01Ω 0.1Ω 1Ω –
Intrinsic Uncertainty ± (1%R + 10ct) ± (1%R + 2ct) ± (1%R + 1ct) –
Measurement Frequency 128Hz or 256Hz (automatically selected)
No-load Voltage ±10 V peak
Maximum Test Current 20mA
Measurement Mode One shot or continuous
GENERAL
Display Backlit LCD
Measurement Mode 2P (Ω), 3P (Ω)
Power Supply (6) AA Alkaline batteries
Battery Life > 2,000 x 3P earth measurements at 100 Ω
Dimensions 8.78 x 4.96 x 2.75″ (223 x 126 x 70mm)
SAFETY
Safety Ratings EMC: IEC 61326-1; IEC 61010-2-030 / 600 V CAT IV

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