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RHOSONICS

RHOSONICS. I n-line Concentration Analysis With Ultrasound Presented By: Willem Van B. De Jong. RHOSONICS PRODUCTS. Based on wave propagation (movement of molecules) Independent of conductivity Independent of density Independent of transparency.

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RHOSONICS

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  1. RHOSONICS • In-line Concentration Analysis With Ultrasound • Presented By: Willem Van B. De Jong

  2. RHOSONICS PRODUCTS

  3. Based on wave propagation (movement of molecules) Independent of conductivity Independent of density Independent of transparency ULTRASONIC IN-LINE ANALYSIS MAIN ADVANGTAGES

  4. Completely non-destructive No moving parts Absolute measurement (time) In-line Very high accuracy RHOSONICS: MAIN FEATURES

  5. PULSE-ECHO (REFLECTION) & TRANSMISSION PRINCIPLE

  6. THE RHOSONICS LIQUID ANALYZER • The Model 8100 • The MCS-1-cell transmission system • The MP-130 measuring probe • The MP-54 measuring probe

  7. MODEL 8100 – BENCH TOP MODEL

  8. THE FLOW-THROUGH CELL

  9. MP-130-EX REFLECTION PROBE • Explosion proof • 2” and larger • In-line • Temp. compensation

  10. 8100 WITH MP-54 SENSOR • Sanitary • CIP-able • For Beer & drinks • Inline • Temp. compensation

  11. MEASUREMENT OF SOUND VELOCITY • Principles • Block diagram • Time measurement • Speed calculation • Calculation of concentration from c, T

  12. BLOCK DIAGRAM OF MODEL 8100

  13. TIME MEASUREMENT:BY DIGITIZED WAVEFORM ANALYSIS

  14. MAGNIFIED WAVEFORM

  15. SPEED CALCULATION

  16. THE TRANSLATION OF ULTRASOUND • Calculation of concentration • Sound speed curves of some liquids

  17. CALCULATION OF CONCENTRATION • Polynomial for % w/w, density, etc:

  18. APPLIED TO HYDROCARBON LIQUIDS • Sound speeds of some hydrocarbons • Composition of some C10…C60 samples • Sound speed curves of these samples

  19. USED FOR Conversion processes In-line density SOUND SPEEDS OF HYDROCARBONS

  20. CALIBRATION METHOD • Gather sound speed data: •Sound velocities @ 25 temperatures •Sound velocities @ 3 to 5 concentrations • Calculation of polynomial data (R) • Enter data into model 8100 • Each set is called a “recipe”

  21. EXAMPLE 2: NITRIC ACID

  22. EXAMPLE 3: SULPHURIC ACID

  23. EXAMPLE 4: ACETIC ACID

  24. EXPECTED RESOLUTION AC. ACID: • Change in c per %: 9.2 m/s/% • Change in c per ºC: 3.65 m/s/ºC • C accuracy: + 0.05 m/s • T accuracy: + 0.02ºC • Resulting in resolution of 100 PPM

  25. EXAMPLE 5: AMMONIUM HYDROX.

  26. MAINTENANCE • Functional checks • Calibration • Cell replacement • Editing liquid parameters

  27. TYPICAL ADVANTAGES • No moving parts • No drift • In-line • Highly accurate

  28. FUNCTIONAL CHECKS • Sample check • Pure water check (checks both c & T) • Calibration of temperature circuit • Negligible drift of sound speed circuit

  29. CALIBRATION INSTRUMENT ELECTRONICS • Calibration of analog circuits: •mA outputs •PT100 inputs PROBE • PT100 verification with water check

  30. CELL REPLACEMENT NEW CELL - ENTRY OF NEW PARAMETERS: • Path length • Dead time • Temperature offset ADVANTAGES: • Sensor is pre-calibrated • Independent of liquid

  31. EDITING LIQUID PARAMETERS • Liquid name • Liquid number • Polynomial constants • Field calibration factors

  32. RHOSONICS ANALYSIS INSTRUMENTS YOUR PARTNER FOR ULTRASONIC IN-LINE CONCENTRATION ANALYSIS

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