CM83C

Digital clamp meter for measuring inrush current during engine starting

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The digital clamp meter CM83C has a 10,000 count screen display. Equipped with True-RMS, it has the function of measuring the current surge generated at the moment of motor startup and can measure the instantaneous load that the electrical system can withstand when the equipment starts.

Function

DC Voltage100V/600V±(0.8%+3)
AC Voltage100V/600V±(1.0%+4)
AC Current6A/60A/600A±(3.0%+6)
Resistance100Ω/1kΩ/10kΩ/100kΩ/1MΩ/10MΩ/100MΩ±(1.0%+3)
Capacitance10nF/100nF/1μF/100μF/1mF/60mF±(3.5%+5)
°C/°F-20°C~1000°C/-4°F~1832°F±(2.0%+2)
Continuity Buzzer<30Ω
Jaw Opening32mm
<30Ω
中32mm
Diode
Data Hold
Backlight
Flashlight
Auto Power off
NCV
Low Battery IndicationLower than 2.4V
Batteries2*1.5V AAA
Size200*75*30(mm)
WeightAbout 226g
Safety LevelEN61010-2-032,CAT Ⅲ 600V
Standard AccessoriesDigital Clamp Meter-Probe-Carrying
Bag-Batteries-User Manual-Color Box

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.

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.

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.

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.

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.

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