A diaphragm meter is a type of flow meter used to measure the volume of gas or liquid passing through a pipeline. It operates using a flexible diaphragm that moves in response to the flow, creating a measurable displacement. This movement is then converted into a reading that indicates the flow rate or total volume. These meters are commonly used in residential and commercial settings for measuring natural gas consumption. They are known for their accuracy and reliability, making them a popular choice for utility companies. Regular maintenance ensures their performance and longevity in various applications.