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Nutsche Filter Control. Agenda. Introduction Nutsche Filter Industries Concepts of Image Processing Equipment Calibration Real Time Measurement Output Data / Process Control Visual Verification Demonstrations Conclusion Questions & Answers. Introduction.
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Agenda • Introduction • Nutsche Filter Industries • Concepts of Image Processing • Equipment • Calibration • Real Time Measurement • Output Data / Process Control • Visual Verification • Demonstrations • Conclusion • Questions & Answers
Introduction Vision Based Approach for Non-Contact Cake Detection and Level Measurement for Nutsche Filters in Weather Proof and Explosion Proof Areas
What is a Nutsche Filter? A Nutsche Filter is a machine used to separate solids from a slurry by using positive pressure. Liquid of the slurry is forced through a screen or cloth so that the solids can be collected.
Process Control by Image Analysis Cake detection is determining the transition from liquid to solid “cake”. It is critical to determine this transition so that cracks in the cake do not form. Cracks will result in inconsistent washes and lost product. Canty performs cake detection by image analysis, detecting the transition and sending an output signal for control to produce homogeneous product. Simultaneously, level measurement and surface roughness can be measured with output signals.
Payback • Batch times can be optimized to save and increase production time. • Cake detection prevents cracking to yield a plug free wash resulting in fewer washes being required. With each wash product is lost. Therefore fewer washes result in higher yield. This can result in a 1-5% increase in output. Payback if a plant produces 10 million dollars per year…5% increase is $500,000 pure profit!!! • Level in nutsche can be used to determine the yield of the crystalizer. Level of cake can be measured on the filter wall. The total level at the start of the batch is the batch size. Yield is the total level to the level of the cake.
Applications & Industries • Pharmaceutical (Crystallization) • Metallic Powders • Chemical • Most Slurry Applications
Concepts of Image Processing • Human Eye • Lighting • Digitizing Image • Image Filters • Image Analysis • Output Signal / Data Storage
Equipment • Camera/Light Combination • Spray Ring • Image Processor
Color or Black & White EXP/FP or Weather Proof Fused Glass (Standard) One Connection Spray Ring Option Various View Angles Fiber Optic Lighting Cold Light NO “Bake-on” Remote Light Option Flush Mount Camera/Light
Color or Black & White EXP/FP or Weather Proof Fused Glass (Standard) One Connection Spray Ring Option Various View Angles Fiber Optic Lighting Cold Light NO “Bake-on” Remote Light Option Insertion Camera/Light
Any Fluid or Gas Vortex Cleaning Action Insertion or Flush Mount Standard to 2500 PSI Various Materials Various Mounting Connections Spray Ring
CANTYVISION Windows Imbedded Standard OPC Standard 4-20mA Excel Interface Ethernet Connection Modem (Support) Image Processor
Calibration • Cake Detection • Measure Intensity (Recording Images) • Set Transition Threshold • Set Output Signal • Verify • Level • Fill in Known Increments • Save Images and Record Values • Enter Data in LUT and Interpolate • Set Output Signal • Verify
Real Time Measurement • Non-Contact • One Port • Accurate • Repeatable • Response Time • Archived Data
Output Data / Process Control • Displays • Monitor • Numerical • Output Signals • 4-20mA • Spreadsheet • OPC • Process Control
Visual Verification • Key Advantage • Operators View Process in Real Time • Cross-hairs / Inverted Image • R&D • Recording Files • Images
Payback • Batch times can be optimized to save and increase production time. • Cake detection prevents cracking to yield a plug free wash resulting in fewer washes being required. With each wash product is lost. Therefore fewer washes result in higher yield. This can result in a 1-5% increase in output. Payback if a plant produces 10 million dollars per year…5% increase is $500,000 pure profit!!! • Level in nutsche can be used to determine the yield of the crystalizer. Level of cake can be measured on the filter wall. The total level at the start of the batch is the batch size. Yield is the total level to the level of the cake.
Conclusion • Real Time Measurement • Non-Contact • Repeatable / Accurate • Visual Verification • Output Signals • Process Control • Better Quality • Higher Yield • Quick Payback