The compact vane anemometer testo 417 was developed to make measurements of air inlets and outlets in air conditioning systems as easy as possible. The integrated 100 mm impeller ensures precise results quickly. Timed and point mean values as well as the volume flow are calculated automatically in the device and shown on the display. This allows controlled home ventilation to be controlled efficiently - including rapid documentation with the testo Smart APP. The APP also supports you not only with the configuration of the measuring device and displays, stores and records the measurement values â it also makes your Smartphone a second display. testo 417 is also available in two practical sets: The testo 417 kit 1 includes two measuring funnels for plate valves and ventilation grilles. These can be simply attached to the fan wheel and cover a wide range of output sizes and formats. The testo 417 set 2 includes a volumetric flow rectifier in addition to the two measuring rectifiers, in order to achieve precise results also at spiral outlets.This text is machine translated.