Optimally adjusted air-conditioning and ventilation systems are a decisive factor for modern buildings. Accordingly, it is important to ensure that the flow, temperature and volume flow in the ventilation duct are correct with the appropriate measurement technology. The testo 425 thermal anemometer is quick, simple and precise to stands at your side. The cabled telescopic probe can be pulled out to 820 mm and thus simplifies the work via head or in channels with a large diameter. All relevant calculations, such as The especially robust and compact meter automatically takes care of volume flow or time-based average values. By the way: Configuration of the measuring device, display and storage of the measured values as well as documentation can be done very comfortably with the testo Smart APP. It also turns your Smartphone into a second display.This text is machine translated.