Even higher levels of performance are being claimed by Bronkhorst UK for direct inline measurement of gases.

The company's Mass-Stream D-6300 digital mass flow meters and controllers now feature more powerful processing, a graphic display with push-button controls, improved accuracy to ±2% and a greatly increased measuring range, from 0.01 to 5,000 Ln/min air-equivalent.
They are suitable for virtually any gas or gas mix, including dirty or wet gases and those with a tendency to particulate. The technology is also good for N2/O2 generators, gas consumption metering, medical gas monitoring, airflow control in paint spray lines and burner ratio control.
D-6300 has IP65 protection as standard and covers all measurement and control functions.
Bronkhorst claims it establishes a new benchmark – as evidenced by its win in this year's Golden Gas Awards.