The universal air velocity & IAQ measuring instrument testo 400

For us as a technical service provider for air conditioning and ventilation systems, testo 400 is our preferred instrument with its versatility and convenient data management functionalities. It's very easy to use and, most importantly, provides reliable readings.

We use testo 400 to determine reliable results of the indoor climate. Here the measuring programs for PMV/PPD and draught rate are already stored in the instrument. The flexible attachment of various probes is another plus point of the testo 400 for me. If my applications expand in the future, I can simply purchase additional probes. If a probe breaks or needs calibration, I can send it to the service department separately and continue to use the measuring instrument in the meantime.

The IAQ measuring instrument testo 400 makes you a measurement data billionaire. Because with its huge memory, we don't have any more headaches about data management and documentation.

The wireless probes, simply designed touch display and magnetic mount for attaching to ducts make it quite easy to use. In addition, the calibratability of the instrument and accessories as well as the high accuracy are crucial for the pharmaceutical customers we support as a service provider for technical facility management.