BK Precision Manual-Ranging, True RMS Digital Multi Meter with Logic Test, 20 Amp, 750 VAC, 1000 VDC, 20 M Ohm, 200 k Hz with a NIST-Traceable Calibration Certificate with Data BK Precision 391A

Brand:B&K Precision

3.6/5

646.14

The BK Precision 391A digital Multi meter (also known as a multi tester) is a true RMS, manual-ranging meter for measuring current, voltage, resistance, and frequency in electrical testing applications. The meter comes with a set of detachable test leads. The logic test reports the logic state of an electronic circuit. An audible continuity sensor confirms a circuit conducts electricity, and a diode test detects proper functioning of a circuit’s diodes. The meter measures duty cycles to 90%, indicating the percent of time a circuit is on. The micro amp function identifies current changes in flame detector applications. A hold function keeps a reading on the display, even after the meter has been disconnected. An alarm sounds when the test leads are connected to the wrong jack for the measurement being taken. The unit automatically turns off after 45 minutes of non-use to conserve battery life, and a low-battery indicator signals when the meter's batteries need to be replaced. The meter's body is made of molded rubber, which helps protect it against damage from falls, impacts, and abrasion. The meter has a built-in tilt stand for propping on a flat surface, and a hanging strap is included for hands-free use. This true RMS (root mean square) meter provides accurate readings when measuring linear loads, such as standard induction motors and incandescent lights, where the current or voltage has an undistorted waveform, or nonlinear loads, such as electronic devices or motors, where the current or voltage has a distorted waveform. It is a manual-ranging meter that requires the operator to choose the appropriate operating range for the property being measured.

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True RMS (root mean square) meter provides accurate readings when measuring linear or nonlinear loads where the current or voltage has an undistorted or distorted waveform. Digital Multi meter measures current, voltage, resistance, and frequency. Logic test reports the logic state of an electronic circuit. The NIST calibration provides you assurance your instrument Meets manufacturer’s specifications. Your instrument is ready to Use day one meeting most quality system standards. Your unit is calibrated prior to shipment with a new NIST-traceable calibration Certificate with data.
Brand B&K Precision
Country of Origin China
Item model number 391ATCAL
Manufacturer B&K Precision Corporation
Package Dimensions 9.25 x 5.59 x 2.48 inches; 1.47 Pounds
Power Source Battery Powered
Style BK Precision 391A

3.6

4 Review
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Scritto da: paul
BK multimeter 391A review
I chose the bk multimeter because I trust the quality and ease of use that BK puts into their products. The meter is very easy to use and if you forget to set the range correctly, the meter is protected. The large display is very easy to see in any kind of lighting, you don't have to squint your eyes when you look at it. The test leads are ok, but I wished the had hooks for attaching to test points so your hands are free to probe different points on a circuit board. All in all a very good meter for the price.
Scritto da: Maureen
Great bench meter.
Great meter. I should know I have 4 and just ordered number 5. Multiple meters sure make power supply design easier.
Scritto da: Adane Yonder
Works fine for around 1 uA
does what it supposed to do, especially at low current settings. This is why we bout it. Works fine for around 1 uA. Good product with reasonable cost.
Scritto da: E. Bishop
Was bad, got returned
The meter was Dead On Arrival. Disappointed and surprised that anyone would try to sell an obviously broken piece of worthless junk, very dirty and scuffed up and no signs of life. However, I DID GET MY MONEY BACK a couple of weeks after I returned it, so it was a marginally adequate transaction.

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