Sonar transducer for level control

The line of ‘fourth-generation’ sonar transducers designed for improved sensing of interface levels in clarifiers and thickeners is available. The sensors claim improvements in overall power, penetration and calibration density range. They provide better capability under high suspended solids loading, ‘sliming’ and generally upset process conditions.

Hawk’s Orca Sonar Interface products can now be used for control not just for monitoring purposes. Sonar sensors may be used to locate and track layers of differing density within a process tank. The Orca sonar can allow the user to control flocculent dosing, control settling time and control the density of a bed.

The Hawk transducer designs include 3-7 sonar crystals mounted in a single head. Each sonar array produces a concentrated sonar beam, providing more emitted power and collecting more returned signals. Array transducers yield better penetration, higher sensitivity and better overall performance in most difficult environments.

Hawk transducers and integrated self-cleaning systems offer an accurate real-time output representing the behaviour of a density interface.