The BFS-10-N-AIR and BFS-10-O-AIR are flow switches designed for measuring air or gas flow.
The BFS-10-N-AIR has a measuring range of 0.6 ... 2.2 Nl/min up to 200 ... 650 Nl/min, while the BFS-10-O-AIR has a measuring range of 0.2 ...1.3 Nl/min up to 200 ... 625 Nl/min.