HAWK Measurement Systems, global provider of level, positioning and flow measurement technology, says it has introduced a breakthrough in interface level measurement

The new line of 'fourth generation' sonar transducers is designed for improved sensing of interface levels in Clarifiers and especially thickeners. The new sensors offer big improvements in overall power, penetration, and calibration density range.

They provide better capability under high suspended solids loading, ‘sliming’ and generally upset process conditions.

In Municipal water and waste water plants it is important to measure RAS and Floc (Fluff) level in secondary clarifiers, Bed level for primary clarifiers as well as Bed level in Thickeners.

According to the company, the Orca Sonar Interface products can now be used for control and not just 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 new 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. 

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