Wind direction sensor used in a device for removing smoke and heat from a building comprises a cam plate rotating about a vertical rotational axis on a base plate and a switch fixed on the base plate opposite the cam plate

摘要

Wind direction sensor comprises a cam plate (7) rotating about a vertical rotational axis (8) on a base plate (6) and a switch (11) fixed on the base plate opposite the cam plate. The switch has an actuating element (12) which is controlled by the cam and the cam plate has a cam (9) extending over 180[deg]. The base plate has aligning devices for mounting on a building wall. A blade (16) is fixed to the cam plate. Preferred Features: The aligning devices have a horizontal aligning line for mounting the base plate parallel to the building wall.