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Monday 11 August 2008

Sonar transducers interface levels

Jessica Darnbrough

Hawk has introduced a line of sonar transducers for improving sensing of interface levels in clarifiers and thickeners.

According to the company, the sensors provide good capability under high suspended solids loading, ‘sliming’ and generally upset process conditions.

The transducer designs include three to seven sonar crystals mounted in a single head.
The transducer designs include three to seven sonar crystals mounted in a single head.

The company’s sonar interface products can be used for control and monitoring purposes.

Sonar sensors may be used to locate and track layers of differing density within a process tank.

The company’s Orca sonar can allow the user to control flocculent dosing, control settling time and control the density of a bed, according to the manufacturer.

The transducer designs include three to seven sonar crystals mounted in a single head.

Each sonar array produces a concentrated sonar beam, providing more emitted power and collecting more returned signals.

The transducers and integrated self cleaning systems offer an accurate “real-time” output representing the behaviour of a density interface. This output can be used as a control input, not just for monitoring.

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