Mestek flexible clamp meter FC01 is designed for high-current measurement in complex electrical environments, offering a wide AC current range up to 9999A. Equipped with a 520mm flexible Rogowski coil and a slim 7.5mm diameter, it easily wraps around large conductors or fits into tight spaces where traditional clamp meters cannot operate. The large LCD display with 9999 counts ensures clear and accurate readings, while features such as auto ranging, data hold, and backlight enhance usability in low-light or demanding field conditions.
With a fast sampling rate of approximately three times per second, this meter provides real-time monitoring for dynamic electrical systems. Its lightweight and flexible design makes it ideal for use in power distribution panels, industrial maintenance, electrical inspections, and high-current busbar testing. Built for efficiency and convenience, FC01 reliable tool for professionals who require precise measurements in challenging environments.Humanize 146 words.
Functions
| AC Current Range | AC 9999A |
| Maximum Display Value | 9999 |
| Display | LCD |
| Rated Current | About 5mA |
| Overload Display | OL |
| Sampling Time | About 3 times/second |
| Automatic Range | Yes |
| Data Hold | Yes |
| Low Battery Indication | Yes |
| Auto Power Off | Yes |
| Backlight | Yes |
| Power Supply | 2*1.5V AAA |
| Operating Height | Maximum 2000m |
| Operating Temperature | 0°C – 40°C |
| Storage Temperature | -10°C – 50°C |
| Size | 335*160*26 mm |
| Clamp Diameter | 165mm |
| Flexible Clamp Length | 520mm |
| Flexible Clamp Diameter | 7.5 mm |
| Weight | About 120g (without batteries) |
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FREQUENTLY ASKED QUESTIONS
What's the difference between a clamp meter and a multimeter?
A clamp meter is specialized for current measurement through its jaws, especially high amperage. A multimeter offers broader functions like voltage, resistance, and continuity testing, but typically measures current via test leads.For a more detailed comparison, please refer to the blog:clamp electric meter vs multimeter.
Can a clamp meter measure both AC and DC current?
Yes, many modern clamp meters can measure both AC and DC current. Be sure to check if the model specifically supports DC current, as not all do.
How do I measure current with a clamp meter?
To measure current, first set your clamp meter to the correct current mode—AC or DC. Then open the clamp jaws and place them around a single live conductor, not the entire cable, as clamping around both live and neutral wires will cancel out the current reading. Make sure the wire is centered in the clamp for better accuracy. Once clamped, the current value will appear on the display. For DC current measurements, some models require you to zero the meter before use to ensure accuracy.
What is the maximum current a clamp meter can measure?
It depends on the model. Entry-level clamp meters typically measure up to 400A–600A, while industrial models can go up to 1000A or more.
What is non-contact voltage (NCV) detection in a clamp meter?
NCV detection is a safety feature that lets you detect the presence of AC voltage without physically touching a wire. The clamp meter senses the electromagnetic field emitted by a live wire and alerts you with a visual or audible signal. It’s a fast and convenient way to identify live wires or check for voltage in outlets, switches, and breaker panels. However, NCV only indicates the presence of voltage—it doesn’t tell you the exact voltage level, so it should be used as a preliminary safety check rather than a precise measurement.
How accurate is a clamp meter?
Clamp meter accuracy varies by model and technology. Most standard models offer ±2% to ±3% accuracy, while high-end True RMS meters can reach ±1%. Accuracy may be affected by wire position, interference, or temperature. For best results, follow the manufacturer’s usage and calibration guidelines.








