The versatile instrument for measuring air humidity, material equilibrium moisture and pressure dewpoint in compressed air systems. The humidity sensor, developed by Testo, has proven itself worldwide and has excellent features in terms of precision, long-term stability, temperature resistance and robustness. Up to 3 temperature or humidity probes can be displayed wirelessly in the testo 635 measuring instrument, i.e. data is transmitted by radio. Selectable user profiles, i.e. function buttons allocated to a specified application and menu guide facilitate intuitive operation. Data is transmitted via infrared to the Testo printer. Material moisture can be displayed directly using special probes. To analyse humidity on ceilings and walls, testo 635 shows the dewpoint difference between ambient air and wall surface. Precision probes up to 140 °F tpd are available for checking pressure dewpoint in compressed air systems.
Testo printer for documenting measurement data on site
Cyclical printing of readings once a minute, for example
Measures air moisture, material equilibrium moisture, pressure dewpoint
Radio probes for temperature and humidity
Protection class IP54