rhosonics in-line concentration analysis with ultrasound presented by: willem van b. de jong
TRANSCRIPT
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RHOSONICSRHOSONICS
In-line Concentration Analysis With Ultrasound
Presented By:
Willem Van B. De Jong
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RHOSONICS PRODUCTSRHOSONICS PRODUCTS
U ltrason ic N D T:P iezo com p os ite sen sors
P u lser-rece ivers
G as an a lys isD en s ity
U trason ic in lin e an a lys isC on cen tra tion an a lys is
P artic le s ize & d is trib u tion
P rod u c t lin es
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ULTRASONIC IN-LINE ANALYSIS MAIN ADVANGTAGESULTRASONIC IN-LINE ANALYSIS MAIN ADVANGTAGES
Based on wave propagation (movement of molecules)
Independent of conductivity
Independent of density
Independent of transparency
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RHOSONICS: MAIN FEATURESRHOSONICS: MAIN FEATURES
Completely non-destructive
No moving parts
Absolute measurement (time)
In-line
Very high accuracy
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PULSE-ECHO (REFLECTION) & TRANSMISSION PRINCIPLEPULSE-ECHO (REFLECTION) & TRANSMISSION PRINCIPLE
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THE RHOSONICS LIQUID ANALYZERTHE RHOSONICS LIQUID ANALYZER
The Model 8100
The MCS-1-cell transmission system
The MP-130 measuring probe
The MP-54 measuring probe
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MODEL 8100 – BENCH TOP MODELMODEL 8100 – BENCH TOP MODEL
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THE FLOW-THROUGH CELLTHE FLOW-THROUGH CELL
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MP-130-EX REFLECTION PROBEMP-130-EX REFLECTION PROBE
Explosion proof
2” and larger
In-line
Temp. compensation
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8100 WITH MP-54 SENSOR8100 WITH MP-54 SENSOR
Sanitary
CIP-able
For Beer & drinks
Inline
Temp. compensation
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MEASUREMENT OF SOUND VELOCITYMEASUREMENT OF SOUND VELOCITY
Principles
Block diagram
Time measurement
Speed calculation
Calculation of concentration from c, T
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BLOCK DIAGRAM OF MODEL 8100BLOCK DIAGRAM OF MODEL 8100
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TIME MEASUREMENT:TIME MEASUREMENT:BY DIGITIZED WAVEFORM ANALYSISBY DIGITIZED WAVEFORM ANALYSIS
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MAGNIFIED WAVEFORMMAGNIFIED WAVEFORM
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SPEED CALCULATIONSPEED CALCULATION
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THE TRANSLATION OF ULTRASOUNDTHE TRANSLATION OF ULTRASOUND
Calculation of concentration
Sound speed curves of some liquids
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CALCULATION OF CONCENTRATIONCALCULATION OF CONCENTRATION
Polynomial for % w/w, density, etc:
x = p0 + p1.c + p2.c2 + p3.c
3 + p4.t + p5.t
2 + p6.t.c + p7.t.c
2 + p8.t2.c
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APPLIED TO HYDROCARBON LIQUIDSAPPLIED TO HYDROCARBON LIQUIDS
Sound speeds of some hydrocarbons
Composition of some C10…C60 samples
Sound speed curves of these samples
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USED FOR
Conversion processes
In-line density
SOUND SPEEDS OF HYDROCARBONSSOUND SPEEDS OF HYDROCARBONS
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CALIBRATION METHODCALIBRATION 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”
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EXAMPLE 2: NITRIC ACIDEXAMPLE 2: NITRIC ACID
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EXAMPLE 3: SULPHURIC ACIDEXAMPLE 3: SULPHURIC ACID
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EXAMPLE 4: ACETIC ACIDEXAMPLE 4: ACETIC ACID
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EXPECTED RESOLUTION AC. ACID: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
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EXAMPLE 5: AMMONIUM HYDROX.EXAMPLE 5: AMMONIUM HYDROX.
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MAINTENANCEMAINTENANCE
Functional checks
Calibration
Cell replacement
Editing liquid parameters
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TYPICAL ADVANTAGESTYPICAL ADVANTAGES
No moving parts
No drift
In-line
Highly accurate
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FUNCTIONAL CHECKSFUNCTIONAL CHECKS
Sample check
Pure water check (checks both c & T)
Calibration of temperature circuit
Negligible drift of sound speed circuit
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CALIBRATIONCALIBRATION
INSTRUMENT ELECTRONICS
Calibration of analog circuits:
• mA outputs
• PT100 inputs
PROBE
PT100 verification with water check
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CELL REPLACEMENTCELL REPLACEMENT
NEW CELL - ENTRY OF NEW PARAMETERS:
Path length Dead time Temperature offset
ADVANTAGES:
Sensor is pre-calibrated Independent of liquid
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EDITING LIQUID PARAMETERSEDITING LIQUID PARAMETERS
Liquid name
Liquid number
Polynomial constants
Field calibration factors
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RHOSONICS ANALYSIS INSTRUMENTSRHOSONICS ANALYSIS INSTRUMENTS
YOUR PARTNER FOR ULTRASONIC IN-LINE CONCENTRATION ANALYSIS