The DOG-1 from KOBOLD is used for non-contact flow measurement of gases. The medium flows though an opening in a tube. The dynamic pressure at the opening cause part of the gas volume flow to flow into the bypass. The division ratio remains stable over the whole measuring range.
Furthermore, this device is used for compressed air, natural gas, bio-gas, and fermentation gas. It is also enclosed in a housing with a protection degree of IP 65.