6/13/2023 0 Comments Volt meeter![]() ![]() The LCD screen should give you an indicator by switching between the visible V~ and V- modes. When they do this, you typivally need to press a “Mode” button to switch between AC and DC voltage modes. You will also find DC current when measuring the voltage on the battery in your vehicle.Īuthor’s Note: Sometimes manufacturers combine both AC and DC Voltage onto a single dial setting or position. The reason is that most household electronic devices take the 120V AC wall voltage and immediately convert it to DC before powering the sensitive internal processors, screens, and other systems. You measure and troubleshoot batteries and portable electronics using DC current. The “V-” DC voltage setting lets you measure DC (direct current) voltage. The reason is that alternating current periodically reverses direction. AC voltage is denoted with a V followed by a squiggly line (~). ![]() AC voltage is the voltage found at any outlet or plug in your home that supplies power to devices like your refrigerator, computer, TV, etc. Use the”V~” AC voltage setting for measuring or testing AC (alternating current) voltage. This should help you get to the correct mode so you can use the multimeter properly. Let’s walk through each main dial setting so you understand what the symbols and designations mean. Walking Through Each of the Main Dial Settings Some multimeters, break each measurement area on the dial into sections with specific dial points for differing scales.Įditor’s Note: When testing power tool batteries, a voltmeter shows you that 18V and 20V Max battery packs put out the exact same voltage. You just have to know where to look and you can easily get to the mode(s) you need. No matter which brand you use, several key features exist on every dial. It can look pretty intimidating-but we can help walk you through everything you need to know. Understanding How to Use the Multimeter Dial SettingsĪlmost every multimeter uses a large dial to set the mode. That extra precision has to do with the increased resolution afforded by the advanced digital components, error correction, and processing. Because the results are digital, a digital multimeter has the potential to be much more accurate and precise when taking measurements. For example, a digital multimeter includes internal electronics that include converters, comparators, encoders, and logic controllers. ![]() The dial on the display (which looks like a VU meter) reacts with magnetic fields created by changes in the electrical current detected by the device.Ī digital multimeter (DMM) gives you a digital readout but also offers additional functions. An analog multimeter measures voltage (volts), resistance (ohms), and current (amps). The difference between an analog multimeter and a digital multimeter comes down to the display and what they measure. In this article, let’s assume you want to use a multimeter. You can pick up a basic multimeter for less than $20, and they’re widely available. Every Pro uses a multimeter for troubleshooting, but even a homeowner benefits from the use of this tool at some point. How to Use a Multimeter for Testing Batteriesįirst things first, multimeters (voltmeters) typically work as analog devices.Understanding How to Use the Multimeter Dial Settings.Magnetic circuit (sandwich mechanism) reduces the effects of external magnetic fields.Superior temperature compensation circuit reduces external temperature effects.Stable performance ensures that changes over time are negligible.Taut-band suspension system eliminates friction and provides strong resistance to shock impact.DC scales (single scale or dual scale) are also available by special order. A 50 mV current transformer may be combined with any rated current instrument to read measurements through a simple conversion process. The scale for the 50mV instrument has 100 and 150 divisions. 2011 41 50 mV instrument and 2011 42 3 V instrument.JIS C 1102 : 1997 Class 0.5 (Equivalent to class 1.0)Īpproximately 135 mm (Deflection Angle: 85°) Scale ValueĪpproximate Internal Rresistance and Consumed Power ![]()
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