The vane anemometers testo 4101 and testo 4102 offer perfect flow velocity measurement results in handy pocket format. The small, userfriendly testo 4101 measures air flow velocity and temperature, and is suitable for fast spot checks on ventilation outlets thanks to the integrated measurement with the 40 mm vane. A timed mean value calculation is also possible. The measuring instrument has an illuminated display, a clipon protective cap, and a wrist strap and a belt holder ensure safekeeping. In addition to air flow velocity and air temperature, the testo 4102 also measures air humidity. This allows air conditions to be tested reliably. In addition to this, dewpoint and wet bulb are calculated and displayed fully automatically
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