The Greenlee CMGRT - 100A Ground Resistance Tester comes with a calibration loop, a molded carrying case, and a 9V alkaline battery. It's a top - notch tool for measuring ground resistance. It can read ground resistance as low as 0.10 ohms. With its fully auto - ranging feature and data hold, you can easily capture readings. The impedance function allows testing at 4 different frequencies (50Hz, 60Hz, 128Hz, & 2083Hz). It has the widest operating temperature range in the industry, from - 4 to 131°F. The tester features a large, bright OLED display with 3 - 3/4 - digit and 4000 counts. It has a frequency rating of 50, 60, 128, 2033Hz, can measure ground resistance from 0.1 to 1500 ohms, and has a jaw opening of 1.4'. It belongs to the Cat IV measurement category, is hand - held, and meets CE and ETL standards.
Using the Greenlee CMGRT - 100A Ground Resistance Tester is easy. First, make sure the 9V alkaline battery is properly installed. Then, you can start measuring the ground resistance. Just place the tester on the object you want to measure, and it will give you the reading. Thanks to the auto - ranging feature, it will adjust itself to the appropriate range. You can use the data hold function to freeze the reading for better record - keeping. When using the impedance function, select the frequency you need (50Hz, 60Hz, 128Hz, or 2083Hz). Keep in mind that this tester can work in a wide temperature range, but it's best to avoid using it in extremely humid or dusty environments. After use, put it back in the molded carrying case to protect it. And don't forget to check the calibration loop regularly to ensure accurate measurements.
