Which tool can be used as an alternative to a power-quality analyzer for measuring phase amplitude?

The Digital Volt-Ohm Meter (DVOM) is an essential tool that can be effectively used as an alternative to a power-quality analyzer for measuring phase amplitude. A DVOM is capable of measuring both voltage and current, which allows it to capture the amplitude of signals in electrical systems. By measuring the voltage levels in a three-phase system, for instance, it can provide insights into the phase amplitude and help detect imbalances or issues in the electrical system.

When considering other tools, while a clamp meter can measure current without disconnecting the circuit and may provide some insights into electrical efficiency and current flow, it does not directly measure phase amplitude in the manner a DVOM does. An oscilloscope is a powerful tool that allows for visualizing waveforms, which would provide detailed information about phase characteristics, but is generally more complex and not primarily designed for simple amplitude measurements. A frequency meter measures the frequency of the electrical signal, which is a different parameter altogether from phase amplitude and does not provide direct information about the phase differences.

Overall, the DVOM stands out as the most suitable and practical alternative when specifically focused on measuring phase amplitude in a straightforward manner.