TESTO TESTO417 Funnel Set 2

The testo 417 is a vane anemometer that measures wind speed, air temperature and air volume. With a vane diameter of approximately 100 mm, large measuring surfaces can be measured efficiently. By connecting an optional funnel or flow strainer, you can quickly and easily measure the air volume without setting the opening area even if the air supply/exhaust port/ventilation fan is not rectified. Expert knowledge and time are required to obtain an accurate ventilation air volume from the wind speed and the cross-sectional area of the ventilation opening. In order to measure the turbulent flow due to the lattice frame of the ventilation opening and the ventilation air volume of the complicated mechanism of the ventilator such as the disc valve, it is recommended to use the air volume funnel and the Φ100mm vane type anemometer, which can easily measure the air volume just by covering it. Recommended. Rather than calculating the average value from multiple measurements such as point average and time average, you can easily measure the air volume just by using the funnel and save time. The testo 417 air volume funnel set consists of a round funnel for the disc exhaust port and a square funnel for the ventilation fan with a lattice frame. A canvas bag is included for transport. In general, the intake and exhaust ports have a grid-shaped frame for safety, and when the intake and exhaust pass through the grid-shaped frame, turbulence such as entrainment occurs. When measuring airflow, this turbulence can cause airflow values to be too low or too high. For this reason, the air volume is measured by averaging the value with a vane anemometer or by covering the intake and exhaust with a funnel. The testovent 417 flow strainer makes it easy and accurate.
"" Air volume of Anemo Galari Grill
* We do not deliver to private homes (detached houses / apartments).