fan model 4 and model 3. Extensive fan check included. The calibrations are conducted by an accredited lab and based on their traceability to national standards (EN 17025) provide maximum accuracy. Per flow-ring (open fan and rings A -...

fan model 4 and model 3. Extensive fan check included. Benefit from our reduced surcharge for a calibration with DAkkS-certificate in case of initial purchase! The calibrations are conducted by an accredited lab and based on their...

(Model 4 und Model 3) incl. functional test Recommended calibration interval: 4 years Please be sure to send the measuring fan with all rings A-E! Next calibration dates: https://www.blowerdoor.com/calibration/blowerdoor-fans Your...