Differential Pressure Flow Meters
This low cost Gas flow meter is designed to measure non-explosive or corrosive gases, it gives a 4-20mA for Flow or Temperature also and 0-10V output either Flow or Pressure. It is a single point insertion pitot for pipes from 2" and above. This is a perfect solution for compressed air lines.
Packaged Activation Air Control for Sewage Treatment Plants
Multivariable Pressure Transmitter
Flowcom flow computer