Positive Displacement Meters

Positive Displacement Meters

Positive displacement meters are a type of flow meter that measure the flow rate of liquids by separating the fluid into discrete, measurable volumes. These meters work by using a chamber with a fixed volume that is repeatedly filled and emptied as the fluid flows through it. The flow rate is then determined by measuring the number of times the chamber is filled and emptied over a given period of time. Positive displacement meters are highly accurate and can be used to measure a wide range of liquids, including viscous fluids, such as oils and syrups. They are also relatively insensitive to changes in temperature, pressure, and viscosity, making them a reliable choice for many applications. One of the main advantages of positive displacement meters is their ability to maintain accuracy over a wide range of flow rates. This is because the volume of the chamber remains constant, regardless of the flow rate, ensuring that each volume of fluid is accurately measured. Additionally, positive displacement meters are relatively simple in design, making them easy to install and maintain. However, positive displacement meters are not suitable for all applications. They are typically more expensive than other types of flow meters and can be prone to clogging if used with fluids that contain solids or debris. They also require a minimum flow rate to operate correctly, which can be a limitation in some applications. Overall, positive displacement meters are a reliable and accurate choice for measuring the flow rate of liquids in a wide range of applications.

flow meter, accuracy, viscous fluids, temperature, pressure

— Matthew Turner