The RN volume flow rate controller operates without any external energy. An easy-moving control damper is displaced by aerodynamic forces such as to maintain a constant set
volume flow throughout the entire differential pressure range. The volume flows are set with the
external pointer by reference to a scale. To simplify applications in individual projects, the controllers can be ordered and installed according to the required size. The desired value is then set simply and reliably when installing the controller. The controllers are also available with type RND acoustic cladding, in order to reduce case-radiated noise.
