Manchester Airport flies on ultrasonics08 February 2010

Manchester Airport's plant engineers say that accuracy is now flying on their critical API hydrocarbon separation unit, since installing Pulsar Duet ultrasonic open channel flow sensor-based measurement.

Surface water runoff may be mixed with aviation fuel, oil and other contaminants, so has to be treated in the same way as industrial effluent before discharge.

Airport water services engineer Mark Stewart, who ran the project, says Pulsar supplied a V-notch weir plate, along with its Class 1 MCERTs certified Duet transducer array and FlowCert control unit.

That not only handles the wide range of flow rates, but also compensates for changes in air density and temperature that affect the speed of sound and hence the measurement.

Says Stewart: "We're confident about the measurement, so we know we are submitting exactly the right figures to the Environment Agency. We're now in the process of standardising on Pulsar equipment for all our flow and level measurement applications."

Brian Tinham

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