You should look into massmeters like Promass from E+H
Proline Promass 83F Coriolis flowmeter
Highest process safety – immune to fluctuating and harsh environments
Fewer process measuring points – multivariable measurement (flow, density, temperature)
Space-saving installation – no in/outlet run needs
Quality – software for filling & dosing, density & concentration, advanced diagnostics
Flexible data transfer options – numerous communication types
Automatic recovery of data for servicing