Testo 0554 4173  Flow straigthener set testovent 417 consisting of funnel set testovent 417 and flow straigthener testovent 417.
As the only manufacturer Testo offers a solution to easily and accurately measure to twist outlets alike. The innovative flow rectifier testovent 417 supports you perfectly in the flow measurement at diffusers. The flow rectifier enables a change of swirling flow in a nearly uniform flow, which can then be reliably detected with a Flügleradanemometer or in vane. The measurement of the volume flow diffusers without rectifier results in lower or higher measurement results, depending on with which the flow direction of the swirl is incident on the vane.

The flow rectifier is used in conjunction with the measuring hopper testovent 417 and the optional vane anemometer testo 417 and the vane probes (Ø 100 mm) of the testo 435 and testo 480 used. The set consists of the flow rectifier and the testovent 417 Funnel. In testovent 417 Funnel two funnels with different dimensions are included.