The 200A AC rating with 100mA resolution and 40A DC rating with 10mA (DC) resolution is optimized for finding problems where very low current variances would be missed by standard clamp meters. The meter doubles as a DMM with added resistance and frequency functions. Whether you are checking amp draws on commercial electrical circuits or troubleshooting relays on vehicle air conditioning systems, the go-anywhere 23mm jaw opening is compact enough to fit in tight locations.The 4-digit (4,000 count) readout is easy to read and a 40 segment bargraph helps simulate an analog display, better illustrating swings in readings. The Data Hold function freezes the display while the Min/Max function tracks and displays minimum and maximum values – useful for blind measurements and start-up draw. The zero function makes it easy to perform relative measurements.

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Depending on a given job, with the Extech 390947 you can select from several AC current ranges: 4A/40A/100A/400A. The 4A AC range with 1mA resolution is optimized for finding problems where low current variances would be missed by standard clamp meters. DC current can be measured in two useful ranges: 40A/400A. In addition to AC/DC current, this mini clamp meter measures frequency to 10kHz. The 380947 features True RMS to compensate for distortion from electronic components, such as fluorescent lights, motor drives, computer power supplies, and other electronic systems that can distort the AC waveform, which make it difficult for averaging meters to obtain accurate readings. This meter’s True RMS capability uses a more advanced formula to adjust for this kind of distortion.

Extech 380947 Other Features

This meter’s multiple ranges, ergonomic design, and go-anywhere 23mm jaw opening provide versatility whether you are checking amp draws on industrial equipment and building circuits or taking readings in a tight areas like inside engine bays. The useful Data Hold function freezes the display while the Min/Max function tracks and displays minimum and maximum values – useful for blind measurements and start-up draws. The Zero function makes it easy to perform relative measurements. The 4-digit (4,000-count) readout is easy to read and a 40 segment bar graph helps simulate an analog display, better illustrating swings in readings captured by this meter.

Eatech 380947 Specifications

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Clamp meter with built-in AC NCV Voltage detector + flashlight 200A mini clamp meters increase use safety by including a built-in voltage detector in the jaw tip. The user can now detect the presence of live voltages before using the meter.

Flashlight: Press and hold the top button to turn the flashlight on. Release the button to turn the flashlight off.

Data Hold: To freeze the current reading on the LCD, press the “Hold / Backlight” key. The word HOLD will appear on the LCD while the meter is in the Data Hold mode. To release the Data Hold function and return the meter to normal operation, press the “Hold / Backlight” key again. The word HOLD will switch off.

Backlight Display: Press and hold the “Hold / Backlight” key for more than 2 seconds to turn on the backlight. This will also activate the Data Hold function. To release the Data Hold function and return the meter to normal operation, press the Data Hold key momentarily. To turn off the backlight, press and hold the “Hold Backlight” key for more than 2 seconds

Extech MA120 Features:

• Measures 200A AC Current up to 100mA resolution
• 3% basic ACA accuracy
• 18mm jaw opening; 300MCM cable size
• 2000 count LCD display
• Non-contact AC Voltage detector (120/240VAC, 50/60Hz) via clamp tip
• Built-in white LED flashlight
• Measures Frequency up to 1kHz with 0.01Hz resolution
• Autoranging with Auto Power Off and Data hold function

Specifications

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Key Functionality

Besides AC/DC current, the mini clamp measures AC/DC voltage, resistance, frequency, duty cycle as well as performing diode and continuity tests. In addition, a special 4A range with 1mA resolution is optimized for finding problems where low current variances would be missed by standard clamp meters. The 4-digit (4,000-count) readout is easy to read and you can operate the meter with one hand, having a thumb-dial selector that is ergonomically placed off the side of the meter. The 380950’s ultra-compact and ergonomic design, two-range (4A/80A) rating, and very small 0.9″ (23mm) jaw opening make it easier to take readings in extremely tight areas, like inside vehicle engine bays. The useful Data Hold function freezes the display while the Min/Max function tracks and displays minimum and maximum values – useful for blind measurements and start-up draws. The meter also includes a Zero function to make it easy to perform relative measurements.

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