Testo 521-3 Differential Pressure Instrument is intended for high-exactness differential weight estimations in cooling and ventilation innovation. It tends to be utilized, for instance, for estimations in clean rooms and for pipe reviews – on account of an abnormal state of precision and remarkable goals. Related to a Pitot tube (discretionary), the coordinated weight sensor estimates stream speeds of +1 to +20 m/s.

Applications: Differential pressure probes, Absolute pressure probes, Relative pressure probes, Temperature probes (e.g. surface probes or immersion and penetration probes).