What is a frequency meter primarily used for?

A frequency meter is designed specifically to measure the frequency of alternating current (AC) signals. It does this by determining the number of cycles per second, which is expressed in hertz (Hz). By providing precise frequency readings, a frequency meter is essential in applications where the frequency of an AC power source impacts the performance of electrical devices and systems.

Understanding frequency is crucial in various HVAC applications, particularly when working with motors and other equipment that depend on specific frequency ratings for optimal operation. For instance, many HVAC systems are designed to operate at 60 Hz in North America, so monitoring the frequency ensures that the system runs efficiently and avoids potential damage from frequency fluctuations.

Other measurement tools serve distinct purposes. For example, devices that measure voltage or current flow are specialized tools that do not provide frequency measurements. Temperature measurement is handled by thermometers or temperature sensors, which are unrelated to frequency changes. Thus, a frequency meter's primary function is accurately assessing the frequency of AC signals, making it an invaluable tool in electrical and HVAC troubleshooting and maintenance.