CM87C
Pro clamp meter with inrush and temperature test
CM87C clamp electric meter is designed to measure AC and DC currents up to 600A and AC and DC voltages up to 600V, meeting the CAT III 600V requirements of the IEC/EN61010-1 standard. The clamp meter has inrush current measurement for motor starting and data retention. There will be a continuous buzzer alarm when the resistance is below 30Ω. This model can also perform resistance, capacitance, continuity test, diode test, K-type probe temperature and other measurements. The clamp meter also has an automatic power off function to save battery power.
Functions
| DC Voltage | 600mV/6V/60V/600V | ±(0.8%+3) |
| AC Voltage | 6V/60V/600V | ±(1.0%+5) |
| DC Current | 60A/600A | ±(2.5%+10) |
| AC Current | 60A/600A | ±(2.5%+10) |
| Inrush Current | 600A | ±(10%+60) |
| Resistance | 600Ω/6kΩ/60kΩ/600kΩ/6MΩ/60MΩ | ±(2.0%+5) |
| Capacitance | 600nF/6μF/60μF/600pF/6mF/60mF | ±(5.0%+10) |
| K-type Temperature | -20°C-1000°C/-4°F-1832°F | ±(2.0%+2) |
| Continuity Buzzer | <30Ω | |
| Jaw Opening | √ | |
| True-RMS | √ | |
| Data Hold | √ | |
| Backlight | √ | |
| Flashlight | √ | |
| Auto Power off | √ | |
| NCV | √ | |
| Input Impedance | √ | |
| Low Battery Indication | Lower than 2.4V | |
| Batteries | 2*1.5V 2.4V | |
| Size | 254*92*45mm | |
| Weight | About 450g | |
| Safety Level | En61010-2-032,CAT Ⅲ 600V |
Factory Showcase
Mestek achieves high standards and high consistency in product inspection and calibration through precise machinery and a clean environment.
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.
