Pitot tube to measure air volume flow or air velocity via a differential pressure sensor. This set contains a plastic probe and 2 flexible, transparent PVC tubes with a length of 2 m. The pitot tube length is 250 mm. It can be used for air ducts with a diameter of 150 - 500 mm. The maximum working pressure is 10.000 Pa. This set is used to measure or control air velocity. In combination with some sensor, it can also be used to measure or control air volume flow, based on the duct cross section.