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Hawk Measurement Systems is a manufacturer of high quality level instrumentation, including ultrasonic level transmitters, pressure transmitters, capacitive probes, and conductivity probes.
Their Sludge Density meters, Open channel flow meters, thermal dispersion flow, Capacitance level switches, Microwave level switches, rotating switches, Tuning fork level switches, ultrasonic level switches & transmitters are used in Environmental monitoring, Biotechnology & Pharmaceutical manufacturing, Natural gas utilities, Power generation & Processing, Pulp & Paper manufacturing and other industries.
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ORCA Bed Level System Download printable brochure.
The ORCA Sonar will measure up to two density interfaces simultaneously, either bed level or RAS blanket and floc/fluff layer or clarity of water. The transducer design includes 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.
Principle of Operation
The ORCA Sonar Bed Level transducer emits a high powered acoustic pulse, which is reflected from the interface density selected. The reflected signal is processed using specially developed software algorithms, that eliminate lighter floating densities and stratified layers, allowing measurement of RAS or BED levels. It can be calibrated to measure lighter densities like FLOC or one of the outputs could be used for a CLARITY output, similar to a basic turbidity
transmitter measuring solids in suspension. By choosing the correct sonar transducer frequency, the ORCA sonar guarantees the optimized performance when measuring both light and heavy density interfaces.
Primary Areas of Application
- Sewage & Wastewater Primary Sedimentation - Blanket level
- Secondary and final Clarifiers - RAS Blanket and fluff/pin floc layer
- Thickeners and DAF – Bed level and clarity of water
- Sequential Batch Reactors – Blanket monitoring (floating sonar)
- Lagoons – Bed sludge level
- Lamella Clarifier – Bed level and floc level
- Mining/Process Clarifiers, thickeners, CCD’s, settling ponds/lagoons, water treatment, carbon columns
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