Use the Testo 0635 9542 Digital Vane Probe to determine flow velocity or volume flow in ventilation ducts (e.g. during the maintenance, evaluation and commissioning of ventilation systems). It is particularly suitable for medium flow velocities up to 50 m/s, consistently delivering optimum results. The vane anemometer can also measure temperatures up to 158 degrees F at the same time.

The 0635 9542 Digital Vane Probe is equipped with a telescope, making it convenient to use for larger ventilation ducts too. When extended, the maximum length of the telescope is 37.8 in. (960 mm). The scaling on the telescope makes it easy to read the immersion depth.

On the handle there is a practical measuring button, which activates storage of the readings. So you can fully focus on the positioning of the probe in the ventilation duct.

The 0635 9542 Digital Vane Probe offers maximum digital measurement reliability. The digital probe allows readings to be processed directly in the probe. This technology eliminates instrument measurement uncertainty. Calculating the determined calibration data in the probe generates a zero-error display.