Extech 380947 Features
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.