In the previous manual air supply solution using a mechanical valve, it was difficult to control an accurate air flow. Moreover, no constant air flow could be obtained in case of temperature fluctuations. Replacing the mechanical valve by Bronkhorst 's thermal mass flow controller solved both issues.
The use of the Bronkhorst device improved the quality of the valve testing, and made the plant process-safe. In the current setup, Wandfluh now really knows that a 'wrong' valve is indeed a 'wrong' valve, so there are no more false rejections.