The AEMC 4620 4-Point Digital Ground Resistance Meter measures soil resistivity and ground resistance. Measures from 0? to 2000? with an auto-ranging feature to automatically seek out the optimum measurement range. Resists vibration, shock, and drops up to par with IEC standards. Denies high levels of interference to ensure accurate measurements.
- Extremely simple to operate: connect - press - read
- Designed to reject high levels of noise interference
- Auto-Ranging: automatically selects the optimum range
- Step voltage tests and touch potential measurements
- Measures ground resistance (2- and 3-Point) Fall-of-Potential method
- Measures soil resistivity (4-Point) method
- LED on faceplate informs operator of high input noise, high auxiliary rod resistance and fault connections
- Battery powered
- Rugged, dustproof and rainproof field case
- Can also be used for continuity tests on bonding
- Color-coded terminals
Specifications: | AEMC 4620 4-Point Ground Earth Resistance Tester |
Measurement Ranges | 0.00 to 19.99Ohm; 20.0 to 199.9Ohm; 200 to 1999Ohm |
Resolution | 10mOhm (0.00 to 19.99Ohm); 100mOhm (20.0 to 199.9Ohm); 1Ohm (200 to 1999Ohm) |
Open Voltage | below 42V peak for all ranges |
Resistance Frequency | 128Hz square wave (for all ranges) |
Test Current | 10mA (0.00 to 19.99Ohm); 1mA (20.0 to 199.9Ohm); 0.1mA (200 to 1999Ohm) |
Accuracy | +/-2% of reading +/-1ct(0.00 to 19.99Ohm); +/-2% of reading +/-1ct (20.0 to 199.9Ohm); +/-2% of reading +/-3cts (200 to 1999Ohm) |
Auxiliary Electrode Influence | Max Res. in Current Circuit: 3kOhm (0.00 to 19.99Ohm); 30kOhm (20.0 to 199.9Ohm); 50kOhm (200 to 1999Ohm) |
Power Source | Eight C Cell Alkaline Batteries |
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Applications: | AEMC 4620 4-Point Ground Earth Resistance Tester |
Three-Point measurements of resistance to ground of ground rods and grids. Three-Point measurements are generally used when the electrode or grid can be easily disconnected, if corrosion is suspected, or where ground faults are unlikely to occur | |
Four-Point tests or soil resistivity measurements. Locating areas of lowest soil resistivity is essential for achieving an economical grounding installation | |
Touch potential measurements, an alternative to 3-Point tests. A recommended test when the ground cannot be disconnected, where ground faults are highly likely, or when the "footprint" of grounded equipment is comparable to the size of ground to be tested |
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