Measuring air flow velocities and correctly calculating volume flow at ventilation outlets can present a challenge. Use the Testo 0563 4170 Funnel Set (in conjunction with the appropriate measuring equipment) to measure the volume flow at ventilation grilles and plate outlets conveniently and accurately.

Each flow funnel is ideal for measurements below 50 CFM. The funnel kit Includes an 8-inch round and 13-inch square funnel, ensuring proper measurements for a variety of ducts.

Using the funnels will save you time, since there is no need to use the time-consuming loop method for calculating the mean.

The Testo 0563 4170 Funnel Set consists of a funnel for ventilation grilles and a funnel for plate outlets. You can conveniently transport both funnels in the included practical case.

Use the Testo 0563 4170 Funnel Set in combination with the 417 Vane Anemometer or the vane probes (100 mm dia.) for Models 435 and 480 (sold separately).