The Testo 0635 9370 High-Precision Digital Vane Probe Head, 100 mm, provides parallel determination of air velocity, volume flow, and air temperature. The vane probe head precisely measures air velocity from 19.7 to 2952.8 fpm with an accuracy of up to ±(1.97 fpm + 1.5% of m.v.). It is also equipped with a temperature sensor to carry out measurements of air temperature.

To use the the vane probe head, simply combine it with a handle adapter (sold separately) and then attach it to the universal handle with cable or Bluetooth. For convenient measurements at ceiling outlets, it is recommended to use the extendable telescope with a 90° angle.