What type of measurements can a power quality meter provide?

A power quality meter is specifically designed to monitor and assess various electrical parameters essential for evaluating the quality of power within an electrical system. The meter provides critical measurements such as voltage stability, frequency, and harmonics, which are all key indicators of the health and performance of electrical infrastructure.

Voltage stability reflects how well the voltage levels are maintained during varying loads, frequency measures the supply's consistency, and harmonics indicate the distortion levels in the electrical signals that can affect equipment operation and efficiency. By analyzing these aspects, operators can identify potential issues in the power supply that may lead to equipment failures or inefficiencies, allowing for timely maintenance and corrective actions to uphold optimal system performance.

This makes the choice that focuses on voltage stability, frequency, and harmonics the most accurate depiction of what a power quality meter is capable of measuring. Assessing sound levels, temperature, humidity, or mechanical stress, while important in other contexts, does not fall within the typical functionalities of power quality meters.