Digital Clamp Meter Basics and Features

This page provides an overview of digital clamp meters, highlighting their features and benefits. It also touches on the difference between analog and digital clamp meters.

Definition:

A clamp meter is a device used to measure current and voltage by clamping its jaws around a conductor. There are two main types: analog and digital. Analog clamp meters use a pointer indicator, while digital clamp meters use a numeric display.

AC current measurement in clamp meters relies on the coupling effect, similar to how a transformer works. DC current measurement utilizes Hall effect sensors.

Meco Digital Clamp Meter Features

Here are some key features of the Meco digital clamp meter model 27T-Auto:

• 3*1/2 digit display
• 2000 counts
• Current range: Up to 400A AC
• Voltage range: Up to 600V AC / 600V DC with a jaw opening of 25 mm
• AC current accuracy: +/-2% rdg + 3 digits on the 20Amp range.
• AC voltage accuracy: +/-1.2% rdg + 3 digits
• DC voltage accuracy: +/-0.8% rdg + 3 digits

Digital Clamp Meter Benefits

Digital clamp meters offer several advantages and features beyond basic current and voltage measurement:

• NCV (Non-Contact Voltage detection)
• Temperature measurement
• Max Hold function
• Resistance measurement
• Audible continuity testing
• Diode test function
• Low battery indication