What functionality does a compound meter provide?

A compound meter is designed to accurately measure water flow across a wide range of flow rates, including both low and high flows. This is particularly useful in applications where water usage can vary significantly. The meter typically incorporates two measuring mechanisms: one for low flow rates and another for high flow rates. This dual functionality enables it to provide accurate readings across the entire spectrum of usage, making it ideal for situations where precise measurements are critical, such as in commercial and industrial water applications.

In contrast, the other options highlight functionalities that are not related to the primary purpose of a compound meter. For example, measuring water pressure, enhancing water flow, or filtering contaminants are distinct functions that are not inherent to the design or purpose of a compound meter. Therefore, appreciating the specific role of a compound meter in measuring flow rates helps clarify its importance in the field of water distribution.