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Anton Paar

On-line Sound Velocity and Density Analysers

Anton Paar on-line density and concentration monitoring instruments are utilised for the measurement of two and three component liquids and gases. Anton Paar instruments are widely used in the food and beverage industry and in the chemical, petrochemical and mining industries.

Anton Paar instruments use density and sound velocity as the primary measurement principles for on-line concentration measurement. The density and sound velocity sensors are available as individual instruments or integrated into the one instrument. The instruments can be used inline or in a bypass loop and can be used for quality control and control of liquid manufacturing processes like mixing and blending, distillation and fractionation.

Applications in the food and beverage industry

Brix Monitor
Alcohol Monitor
Carbonation Monitor
Diet Monitor
Baume Monitor
Solids, Total Solids Monitor
Soft drinks, diet beverages
Juices and cordials
Wine
Beer
Spirits
Molasses / Sugar syrup
Pastes and sauces (eg. tomato paste)

For carbonated beverages (soft drinks, beer, sparkling wines), Anton Paar provides a range of carbon dioxide monitors to monitor and control the carbonation process.

As a final quality control monitor prior to the filling lines, the Cobrix3 On-line Beverage Analyser provides measurement of brix, %diet, CO₂, and alcohol content in one simple to operate instrument.

Applications in the chemical, petrochemical and mining industries

Slurry density measurement
High concentration caustic and acid solutions
Concentrations of substances in solvents/liquor (eg. green liquor density)
Hydraulic fluids — oil emulsion concentrations
Gas density — fuel to air ratio in gas fired boilers

Benefits of Anton Paar instruments

Better plant controllability
Improved product quality
Less off-spec product
Lower usage of expensive raw materials
Longer production run times

The Anton Paar density monitors employ a new type of oscillating U-tube. The instruments measure the change in oscillating frequency rather than the change in deflection used by other types of density meters; this provides a signal that is approximately 10x more sensitive than a change in deflection. The result is an instrument that provides a higher accuracy signal. Anton Paar instruments can be used in applications where accurate density measurement was previously impossible. Accuracies of 5x10^-5g/cm³ can be achieved with the Anton Paar instruments.

The wetted parts of the instrument are made from a range of materials to suit the application - stainless steel SS316, Hastelloy C276, Tantalum, Incoloy and borosilicate.

The Anton Paar signal evaluation units (mPDS1000/2000) store polynomials that define the relationship between density and/or sound velocity. This enables the signal evaluation unit to convert a density/sound velocity reading to a concentration reading. It eliminates the manual conversion that otherwise may have to be done.

The instruments are available in an intrinsically safe (IS) version, for applications in hazardous areas and they are designed to operate in harsh environments with process conditions rated to 50 MPa and 125°C

For further information or enquiries on the analysis of your process please contact us.