Multimeter vs Voltmeter: What's the difference?

If you enjoy working with electronics, you should know that both multimeters and voltmeters are extremely useful tools and essential in many ways. However, there can often be confusion for some people as to which one best suits their needs. While we're sure you probably have some general idea of ​​what each of these tools are for, a closer look can be quite helpful when working on a project.

To help you better understand both of these tools and the difference between them, read this easy-to-understand guide. We will explore the features of each device and how they differ from each other in terms of functionality.

A voltmeter is a versatile instrument that only measures voltage. A multimeter, on the other hand, offers a lot more choices, but is also more expensive for the same reason. This also results in a big difference in their prices as multimeters are much more expensive.

Multimeter vs voltmeter: which one to choose?

This is a decision you should make based entirely on how each device performs. Essentially, it has to do with the type of measurement you want and how much money you can spend. By understanding your needs, you should be able to determine which of the two will serve you best.

Carefully read the following information about each device to find out what each one does and how it might affect your decision.

Understanding the Function of a Voltmeter

The main function of a voltmeter is to measure the voltage passing between two nodes. From a technical point of view, a volt is a unit of potential difference between two nodes, and this difference is measured in volts. The voltage itself comes in two kinds as we also have two types of currents i.e. direct current (DC) and alternating current (AC). Some voltmeters only measure direct current, while others measure only alternating current. Then you also have the option of voltmeters that measure both on the same device.

The internal construction of a voltage tester is quite simple and contains only a coil of thin wire carrying a current suspended around an external magnetic field. The device comes with two clamps that, when connected to two nodes, conduct current through the wire inside. This causes the wire to react to the magnetic field, and the coil on which it is located begins to rotate. This moves the measuring pointer on the display, which shows the voltage value. Digital voltmeters are much safer than needle meters and are widely available these days. (1)

Eversame Flat US Plug AC 80-300V LCD Digital Voltmeter

While the voltage tester defined above measures various points, you can also find detachable devices such as the Eversame Flat US Plug AC 80-300V LCD Digital Voltmeter, which shows the voltage flowing through a specific wall outlet. It is used to monitor devices plugged into outlets and can help prevent potential electrical damage in the event of a power surge.

What does a multimeter do?

One thing a multimeter can do is act like a voltmeter. Therefore, if you were to buy even an analog multimeter, you would automatically satisfy your need for a voltmeter. The multimeter can measure voltage and electrical units such as current and resistance. More advanced multimeters also measure parameters such as capacitance, temperature, frequency, inductance, acidity, and relative humidity.

The internals of a multimeter are much more complex and include other components such as resistors, capacitors, temperature sensors, and more. From a purely technical point of view, it is quite easy to see that a multimeter is a much more functional device than a simple voltmeter.

UYIGAO TRMS 6000 digital multimeter

An example of a high performance voltmeter is the UYIGAO TRMS 6000 digital multimeter, a device that offers several measurement options to choose from. With this device, you can measure many units of measurement, including temperature, capacitance, AC voltage, AC current, DC voltage, DC current, frequency, and resistance.

The device also offers other special features such as beep, auto and manual ranging, NCV detection, and auto power off to conserve battery power. The device also features a large 3-inch display that is easy to read and backlit. It is suitable for professional use and has a durable housing to avoid possible damage when dropped. You can also place it on a flat surface using the included stand. (2)

Summing up

By now, you probably already understand that these two devices are very different from each other in terms of their functionality. The voltmeter is quite simple but can come in a wide range of shapes and sizes for fixed and convenient use. It is also the cheaper option of the two, but this is also due to its limited functionality. Multimeters, on the other hand, are very versatile tools that can serve you in a wide range of applications, but you'll have to shell out a lot more money if you want to. Think about your needs and you can easily decide what will suit you best.

Take a look at some of our articles below.

• How to measure DC voltage with a multimeter
• How to read an analog multimeter
• Multimeter voltage symbol

Recommendations

(1) magnetic field - https://www.britannica.com/science/magnet-field

(2) battery conservation - https://www.apple.com/ph/batteries/maximizing-performance/