Reliable sonar bed level technology for coal mining thickeners

Application problem:
The customer had used a sonar system that would only work when the thickener settled well. As soon as there was a change in settling characteristics, with an increase of suspended solids, the sonar would not detect the bed level, but showed a high level.

Solution:
The original sonar was a high frequency transducer and only designed for clean water treatments plants. High frequency sonar sensors are very good for light densities only.

Hawk installed a low frequency sonar transducer, complete with an automatic sludge cleaner, that penetrated the suspended solids and operated off the heavier density bed level.

The sludge cleaning mechanism has a factory guarantee. The sonar also provided a second output, that monitored clarity of the water, as feedback to how well the floc chemical dosing was operating. Cleaning mechanism are also available for surface boom scrapers.

Hawk manufactures the largest range of sonar transducers, to provide optimized performance for all bed level density applications.

Ordering information: (complete system)
Part no: OSIRDYX-OSIRT007S4XC6-OSIRMEL3-OSIRSC A

Application guaranteed!