What are the two main types of gas meters?

The two main types of gas meters are diaphragm meters and rotary meters. Diaphragm meters are commonly used in residential applications due to their ability to accurately measure low to moderate gas flow rates. They work utilizing a flexible diaphragm that moves in response to the pressure of the gas, helping to determine the volume of gas that passes through the meter.

Rotary meters, on the other hand, are typically used in commercial and industrial settings. They operate by using rotating vanes or lobes to measure the flow of gas, making them suitable for higher flow rates. This type of meter is able to provide accurate measurements and is robust enough for various industrial applications.

Choosing diaphragm and rotary meters as the main types acknowledges the different functional requirements based on the environments in which they are used, thereby highlighting their significance in the industry.