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The AEMC 4610 4-Point Ground Resistance Tester performs ground resistance and soil resistivity tests. Direct reading tester measures from 10 m-ohm to 1999 Ohm, and is Auto-Ranging, so it automatically seeks out the optimum measurement range. Easy to use, simply connect the leads, Press-to-Measure and read. The large LCD (nearly 3/4" high) is easy to read, and also indicates low battery status, overrange, and testlead shorts and lead reversals. Three LED indicators on the front panel continuously warn the user of measurement problems to ensure accurate and reliable tests. The Model 4610 is designed to reject high levels of interference, so it can be used under difficult conditions such as high stray currents that normally affect accuracy. Specifications. Measurement Ranges: Auto-ranging 0 to 2000 ohm. Resistance Resolution: 10 m-ohm (20 ohm), 100 m-ohm (200 ohm), 1 ohm (2000 ohm). Resistance Accuracy: 2% of Reading ± 1ct (20, 200 ohm), 3% of Reading ± 3cts (2000 ohm). Operating Frequency: 128 Hz square wave. Max. Auxiliary Rod Resistance Ranges: 20, 200, 2000 ohm. Response Time: Approximately 6 seconds for a stabilized measurement. Display: 7 segment LCD, .71" (18mm) high (3-1/2 digit); 2000 cts.
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