The Extech EX720 clamp meter user guide provides safety warnings, operation steps, specifications and maintenance instructions.
This manual introduces the Extech EX720 800 A true‑RMS AC clamp meter, covering safety symbols, warnings and proper handling before use. Detailed descriptions of the instrument’s controls, display icons and measurement functions are provided.
Operational procedures for AC current, voltage, resistance, capacitance, frequency, temperature, continuity and diode testing are explained, along with data‑hold, peak‑hold, backlight and auto‑shutoff features. The final sections list technical specifications, general dimensions, battery replacement and maintenance guidelines. This manual is written in Chinese.
| AC current range (max) | 800 A, accuracy ± (2.8% + 5d) |
|---|---|
| AC voltage range (max) | 600 V, accuracy ± (2.0% + 5d) |
| DC voltage range (max) | 600 V, accuracy ± (2.0% + 2d) |
| Resistance range (max) | 40 MΩ, accuracy ± (3.5% + 5d) |
| Capacitance range (max) | 40 µF, accuracy ± (4.0% + 10d) |
| Temperature measurement range | -20 °C to 760 °C, accuracy ± (3% + 5 °C) |
| Battery | 1 × 9 V alkaline |
| Auto shut‑off time | ≈ 25 minutes of inactivity |
The meter can measure up to 800 A AC with an accuracy of ± (2.8 % + 5 digits).
It automatically shuts off after about 25 minutes of inactivity.
It uses a single 9 V alkaline battery.