Fox Thermal Gas Mass Flow Meters perform at high levels of accuracy for a wide variety of gases - including natural gas and oxygen flow measurement applications. In addition, Fox Gas Flow Meters are used to measure mixed gases including digester gas and biogas. Other applications include air, ammonia, argon, biogas, butane, chlorine, compressed air, carbon monoxide, carbon dioxide, digester gas, ethane, ethylene, helium, hydrogen, methane, mixed gases, natural gas, nitrogen, oxygen, and propane. Click on one of the links below to learn more about a specific application.