![]() ![]() A multimeter measures volts, but also measures units of resistance and currents, ohms, and amps. Simple and safe.Ī handy tool for the journeyman electrician, the multimeter is a comprehensive tool for anyone who needs to know more than just the voltage of a device or circuit. If it says anything else, you have current. If it says “zero” on the dial, you are unpowered. They are direct, and there is no miscommunication with the readout. These are best to use for simple applications, such as testing the voltage on a socket, or if checking a breaker box before swapping out a circuit blade. Digital models don’t use a coil, and work a little differently, but are more accurate. During the flow, the coil begins to spin, triggering the needle on the analog models. Most voltmeters can read both.Ī very fine wire coil inside the voltmeter is suspended in an electromagnetic field, and, after connecting leads to the device to be checked, it tells the current flow. The currents can be alternating or direct. These meters show the results of that difference. A volt is a numerical unit displaying the difference in potential being measured between two nodes of current. The voltmeter is simply a meter for measuring voltage, either with a needle or a digital readout. Voltmeters only do one job, whereas multimeters wear several hats. To determine whether or not you need a voltmeter or a multimeter, the work you do will answer the question for you. But that is where their similarities end. ![]() Both use a similar electromagnetic current exchange system to determine the amount of voltage. ![]() But for the layperson who doesn’t know which is which, it can be a little confusing. If you have any experience with electrical work, you have most likely used both a voltmeter and a multimeter in your career. ![]()
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