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The Fluke 1621 earth ground tester is used for detecting reliable ground connections, the unit features basic ground testing methods including 3-pole Fall-of-Potential as well as 2-pole ground resistance. Its convenient size, rugged holster, and large, clear LCD display make it an ideal field earth tester, for most work environments. Specifications. Measuring functions: 3-pole earth ground resistance, 2 pole ac resistance of a conductor, Interference voltage. Measuring rate: 2 measurements/second. Resistance Measuring method: Current-voltage measurement with improved cross-talk attenuation, no compensation of measuring lead resistance, with probe (3-pole) or without probe (2-pole), as per IEC/EN 61557-5. Resistance Measuring range: 0.15 ohm to 2 kohm. Resolution: 0.01 ohm to 1 ohm. Intrinsic uncertainty: ± (6 % of measured value + 5 d). Operating uncertainty: ± (18 % of measured value + 5 d). Measuring time: 8 seconds (average from when START is pressed).
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