July 2013, Vol. 240 No. 7
TechNotes
New Technology For Gas Flow, Composition
Quantitech has launched an in-pipe, gas-flow monitoring technology that also offers the ability to measure gas composition or purity. 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. If gas temperature is expected to fluctuate, an automatic compensation is applied. If the gas is at a pressure below ambient, then it is only the volume of the sound that would limit the measurement capability. Measurements at 100 mbar are feasible and flow rates between 0.01 l/min and 200 l/min are possible in pipes up to 200 mm in diameter. Running from a
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