Voltcraft vpt 100 pitot tube anemometer voltcraft vpt 100 p the voltcraft vpt 100 is a pitot tube anemometer that has been designed for precise differential pressure measurement furthermore the pitot tube anemometer records flow velocities of air and gases and ambience temperatures in combination with a pitot tube it is also possible to measure high air velocities p p the flow supply of the pitot tube anemometer is performed via a 9v block battery the vpt 100 can be operated both ind