What is a common method for measuring touch voltage?

Utilizing a digital multimeter is a common method for measuring touch voltage due to its ability to accurately measure AC and DC voltage levels. Touch voltage refers to the voltage that can be present on a conductive surface that someone may touch, which can pose serious safety risks. A digital multimeter allows the user to measure this voltage by connecting its probes to the conductive surface and a reference ground, providing a precise reading of the potential difference.

The digital multimeter's versatility also means it can measure other relevant electrical parameters, making it a key tool in assessing electrical safety and compliance with grounding and bonding standards. This makes it particularly suitable for measuring touch voltage in various environments, such as during maintenance checks or installation of electrical equipment.

In contrast, an infrared thermometer is designed for measuring surface temperatures rather than electrical voltage, a galvanometer is typically used for measuring current in a circuit and offers limited direct voltage measurement capabilities, and an oscilloscope is primarily used for visualizing voltage waveforms rather than measuring touch voltage directly. Each of these tools has its specific applications, but for the purpose of measuring touch voltage, a digital multimeter is the most appropriate and effective choice.