CDI 5200 Compressed Air Flow Meter (standard) CDI 5200 flowmeters make localized metering of air usage a practical way to manage a compressed-air system. Thermal-dispersion mass-flow technology gives the meter sensitivity to low leakage flows, while an innovative mounting design makes it easy to install.Compressed air flow meters show you where, when and how much air is used. Discover large consumers, leakages, incompetent use and overdue maintenance. Use actual data to justify improvement investments and maintenance management in order to allocate cost and subsequently to save money and energy.