massflödesreglering

Massflödesreglering, often abbreviated as MFC, is a device used to control and measure the mass flow rate of a fluid. Unlike volumetric flow meters, which measure the volume of fluid passing through a point per unit time, mass flow meters measure the mass of the fluid per unit time. This is particularly important when dealing with fluids whose density can change significantly with temperature or pressure, such as gases.

Mass flow can be measured directly using principles like the Coriolis effect or the heat transfer method. Coriolis mass flow meters work by inducing an oscillation in a tube through which the fluid flows. The fluid's inertia causes a phase shift in this oscillation, which is directly proportional to the mass flow rate. Heat transfer mass flow meters, commonly used for gases, measure the amount of heat required to raise the temperature of the fluid by a specific amount. This heat input is directly related to the mass flow rate.

MFCs are crucial in various industries where precise control of gas or liquid flow is essential. This includes semiconductor manufacturing, where exact gas mixtures are needed for processes like etching and deposition, as well as in chemical processing, research laboratories, and medical equipment. By ensuring accurate and stable mass flow rates, MFCs contribute to process efficiency, product quality, and safety. The control aspect of an MFC typically involves a control valve integrated with the meter, allowing for automated adjustment of the flow to a desired setpoint.