Description
To ensure good ground system installation, use Extech’s GRT350 Tester to check the resistance of the ground as well as the soil resistivity before you install your ground rods. This tester includes all hardware necessary to measure Earth Ground Resistance in 3 ranges, from 20 to 2000Ω, and Resistivity from 0.06 to 628kΩm. Electricians and technicians should also check their ground system periodically for predictive maintenance ensuring the resistance level doesn’t exceed the allowed safety level.
Features:
- Earth resistivity (p) test
- 4-wire, 3-wire, and 2-wire testing
- Large dual line LCD
- Automatic I (current) and P (potential) spike check
- Test Hold function for easy operation
- Autoranging, Data Hold and Auto Power off
- AC Earth Voltage
- Store/recall up to 200 test results
- Overrange and low battery indication
- Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying case, and eight 1.5V AA batteries
| Specifications | |
| 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 |
