New technology from Quantitech

Quantitech has launched a unique in-pipe gas flow monitoring technology that can also measure gas composition or purity. Unlike other methods, this measurement is not affected by the gas composition, temperature, density, viscosity or pressure, and there is no obstruction at the measurement point.

When the speed of sound (SoS) in a gas is measured along a path in both directions simultaneously, the difference in the measured velocities is proportional to the gas velocity along the pipe. Measurements at 100mbar are feasible and flow rates between 0.01l/min and 200l/min are possible in pipes up to 200mm in diameter.

For the qualitative monitoring of single gases, any change in the SoS measurement will indicate that the purity of the gas has changed. For mixtures of two gases, SoS is a combination of the two main gas components, so there is a simple calculation to derive the proportion of each component.

In comparison with other technologies, the Voxtrac flow meters are highly cost effective, rugged and compact.


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