Double validation of laminar flow
First Duplex Flow Sensor: Laminar Flow Security in perfection!
Perfect for use if double validation of laminar flow is required and space is limited.
Flow monitoring in cleanrooms and clean zones
A direction-defined airflow in cleanrooms protects the products against contamination and unwanted particles will be safely evacuated. To do so, a uniform air flow from the ceiling to the floor (“oriented, low-turbulence displacement flow“) is maintained in cleanrooms of high purity levels. The monitoring range is from wN = 0.36 to 0.54 m/s flow velocity. In the cleanroom, the measurements are made behind terminal filters.
Since the recirculation of air is reduced during standstill periods, an extremely precise measurement of the air velocity is mandatory from 0.1 m/s onwards.
Air flow measurement and control by SCHMIDT® Duplex Flow Sensor SS 20.415 Twin
Often two redundant flow sensors, such as the SS 20.415 LED are installed in applications, for example to realize the regulation and monitoring of the laminar flow independently of one another. Many times, due to limited space, there are limitations in the best placement of the two sensors. Even if the assembly can finally be realized, the mutual influence of the two sensors is a big uncertainty.
With the SCHMIDT® Duplex Flow Sensor SS 20.415 Twin, both of the problems mentioned above can be easily resolved. The combination of two completely self-sufficient flow sensors made it possible to realize a redundant flow measurement at the same measuring position and to eliminate the mutual influence of the two probes. Both flow signals are delivered separately from one another via two analogue outputs.
Thanks to the SCHMIDT® cleanroom-compliant quick assembly kit, the Duplex Flow Sensor can be exchanged for an existing sensor without any additional effort. The assembly effort is identical, the space requirement for assembly is slightly increased.
