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BlowerDoor GmbH

Company logo of BlowerDoor GmbH
BlowerDoor GmbH

New at BlowerDoor GmbH: Fan Calibration according to Manufacturer's Specification

New at BlowerDoor since April 2023 is the calibration (1-point) according to manufacturer's specification for the BlowerDoor Standard measuring fan (model 4). One measured value is calibrated per measuring orifice. The requirement of ISO 9972 for the accuracy of the measuring systems of ± 7 % is assessed. A previous basic maintenance and functional test is included. We calibrate according to date request and ask for registration, in order to ensure short calibration times of max. 5 working days.

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Energy / Environment
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Company logo of BlowerDoor GmbH
BlowerDoor GmbH

Calibration of BlowerDoor Fans

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-E or 1-4), the calibration includes testing three values each in the lower, mid-level and upper flow-rate measuring range in a chamber test stand at a pressure differential of 50 Pa. The manufacturer recommends the calibration of BlowerDoor fans every four years.

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Industrial Engineering
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Company logo of BlowerDoor GmbH
BlowerDoor GmbH

How to correctly perform a BlowerDoor measurement in windy conditions?

Air flows due to wind are irregular and cause pressure fluctuations on the building. Overpressure occurs on the side of the building exposed to the wind, while suction occurs on the side away from the wind. These fluctuations also influence the BlowerDoor measurement. Learn more about BlowerDoor measurement in windy conditions in our January newsletter!

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Energy / Environment
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The publisher indicated in each case (see company info by clicking on image/title or company info in the right-hand column) is solely responsible for the stories above, the event or job offer shown and for the image and audio material displayed. As a rule, the publisher is also the author of the texts and the attached image, audio and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.