1.Theory of Operation 2.Customer Benefits of unique Design Features 3.Application Examples 4.Sizing / Selection Criteria 5.Installation Considerations 6.Summary
VersaFlow Coriolis Flow Meter VersaFlow Coriolis Flow Meter 1. 2. 3. 4. 5. 6. Theory of Operation Customer Benefits of unique Design Features Application Examples Sizing / Selection Criteria Installation Considerations Summary Measurement by mass is the most accurate method • Mass is independent of: • pressure • temperature • viscosity • conductivity •gravity • Reactions are mass balanced Mass provides the greatest reproducibility! Why Mass Measurement? However installation, calibration and maintenance of a scale or load cell is: • Costly • Difficult • Time consuming • Doesn’t allow continuous process Commonly done in batches with weigh scales or load cells: VersaFlow Coriolis Flow Meter High cost for instruments: • Purchase: $ 6,500 to $9,500 + • Installation costs: $$$ • Commission costs: $$$ • Maintaining & calibrating $$$ 55.6 Lb./Min 4 - 20 mA Pulse out Vortex Flow meter Pressure Temperature Transmitter Transmitter Flow Computer To calculate Mass Power Supply 33.6 Lb/Min Flow Computer To calculate Mass Power Supply 4-20 mA Output Pulse Output Radiometric Density Measurement System Magnetic Flow meter Power Supply Flow Flow Combining the uncertainty of (3) separate instruments Low mass flow accuracy: +/- 1.5 to 2.5% Conductive liquids Non-conductive liquids VersaFlow Coriolis Flow Meter Combined Instrument Measurement Turbine Meter Densitometer Flow Controller VersaFlow Coriolis Flow Meter 6 Direct mass flow measurement with Coriolis mass flowmeters z One flow meter allows multiple measured values z Mass flow & mass total z Density & concentration z Volume flow & volume total z Temperature z Reduces costs z 1 Instrument z Reduce cables/power consumption z Increases accuracy/efficiency z Simplified control z Higher Safety Factor z Easy to install & operate z Highly accurate VersaFlow Coriolis Flow Meter 7 So what is the Coriolis effect? z Discovered by Gaspar Gustav de Coriolis in 1835 z The Coriolis effect is an apparent deflection of a moving object in a rotating frame of reference, sometimes attributed to a fictitious force “Coriolis force” z Used to show effect of earth’s rotation on weather patterns VersaFlow Coriolis Flow Meter Coriolis principle 8 Theory of Operation : Mass flow measurement Consider a mass in a rotating system, moving towards (or away from the centre of rotation. The rotational velocity of the mass is changed, due an acceleration. To accelerate an object, a force must be applied. This is the Coriolis force. Fc acts on the particle, m, with a resultant reaction Fr Fr acts in the opposite direction on the tube wall and can be measured as a deflection in the tube rotation Fc = m ( 2v r ω ) VersaFlow Coriolis Flow Meter VersaFlow Coriolis Flow Meter Midpoint Tube without flow Tube with flow F c Flow ω Driver coil F c Sensors A & B • Tube is “damped” on inlet side: sensor A phase – • Tube is “accelerated” on outlet side: sensor B phase + Sensors Driver Outer cylinder Inner cylinder or bridge Connecting tube VersaFlow Coriolis Flow Meter [...]... VersaFlow Coriolis Flow Meter How did we get here? 21 VersaFlow Coriolis Flow Meter Coriolis Designs 22 VersaFlow Coriolis Flow Meter Early designs Micromotion introduced first practical Coriolis Mass Flow Sensor 1977 Single curved tube Vibration measured with respect to case “Case Referenced” Suffered from strong internal and external vibrations Required rigorous mounting Concrete blocks 23 VersaFlow Coriolis. .. - Hz VersaFlow Coriolis Flow Meter VersaFlow Coriolis Flow Meter (1) f= m 1 K 2π m = m tube + m fluid m fluid = ρ fluid • V tube m tube , V tube = constant K = Spring Stiffness (2) ρ= Flow K f2V4π2 - mtube Vtube f Direction of Oscillation VersaFlow Coriolis Flow Meter Frequency shift of VersaFlow Coriolis 1000 Greater the shift (water to air), better the density measurement Meter / Size Titanium SS318L... close coupled twin tubes with pressure rating to 1450psi Flexible Connection Options Sensors Demo VersaFlow Coriolis 100 VersaFlow Coriolis 100 Construction Mechanical Components of VersaFlow Coriolis 100 Optimised Flow splitter Optimised flow splitter to minimise pressure loss and turbulence VersaFlow Coriolis 100 Features and Benefits Robust design No installation restrictions Modular electronics... Optimised flow splitter to minimize pressure loss and turbulence 31 VersaFlow Coriolis 100 Applications Positioned and targeted at the General purpose applications in following industries Chemical Petrochemical Food & Beverage Pharmaceutical Water/waste water Household detergents 32 VersaFlow Coriolis 100 VersaFlow Coriolis 100 with TWC 9000 33 VersaFlow Coriolis 100 Specifications Size: 15 25 40 50 Flow. .. narrow density range Food industry reluctance to accept Titanium Preference for Stainless Steel 27 VersaFlow Coriolis 100 Introduced 2006 Uses elements of VersaFlow Coriolis 1000 design “Twin tube meter with SST experience built in” 28 VersaFlow Coriolis 100 Construction Mechanical Components of VersaFlow Coriolis 100 Driver Unique patented decoupling nodes Secondary containment to 1450psi Innovative.. .VersaFlow Coriolis Flow Meter Mass Flow = 0 Sensor A Sensor B Sensor A Sensor B Sensor A Sensor B Mass Flow > 0 VersaFlow Coriolis Flow Meter Common signal processing techniques are prone to ERRORS when disturbances are present Optimass uses extremely High Sampling Rate... 502 378 492 369 VersaFlow Coriolis Flow Meter Theory of Operation 3: Temperature measurement Uses a PT 500 sensor mounted onto the outside of the measuring tube Also used for internal compensation Fixed to tube using epoxy adhesive, bonded and ovencured 17 VersaFlow Coriolis Flow Meter Other measurements: Volume flow Volume is not a direct measurement It is calculated from the mass flow and density... Cleaning-in-place Solids handling and abrasive media 25 VersaFlow Coriolis Flow Meter … and others followed Endress & Hauser Promass I - 1997 MicroMotion T Series - 1999 Krohne G+ 1997 Solved many installation issues Increased size range Optional material: Zirconium 26 VersaFlow Coriolis Flow Meter However … Installation issues still remained Accuracy affected Meters influenced by temperature changes Balance... B VersaFlow Coriolis Flow Meter Traditional Filtering Allows 8 - 20 Hz to be Analyzed This method is Prone to Errors at lower flows Raw Sensor Signal 8 - 20 Hz Frequency - Hz Optimass uses Digital Narrow Band Pass Filtering: Allows only 1 Hz to be Analyzed This method provides Improved Signal Quality for highly reliable measurements Digitally Filtered Sensor Signal 1 Hz Frequency - Hz VersaFlow Coriolis. .. Volume flow rate = Mass flow rate /Density of product 18 VersaFlow Coriolis Flow Meter Other measurements All other measurements Concentration API Density Referred Density Velocity Are a combination or calculated from the prime measurements 19 1 Theory of Operation 2 Customer Benefits of unique Design Features 3 Application Examples 4 Sizing / Selection Criteria 5 Installation Considerations 6 Summary VersaFlow . Flow Meter Combined Instrument Measurement Turbine Meter Densitometer Flow Controller VersaFlow Coriolis Flow Meter 6 Direct mass flow measurement with Coriolis mass flowmeters z One flow meter. deflection in the tube rotation Fc = m ( 2v r ω ) VersaFlow Coriolis Flow Meter VersaFlow Coriolis Flow Meter Midpoint Tube without flow Tube with flow F c Flow ω Driver coil F c Sensors A & B •. or bridge Connecting tube VersaFlow Coriolis Flow Meter Mass Flow = 0 Sensor A Sensor B Sensor A Sensor B Mass Flow > 0 Sensor BSensor A VersaFlow Coriolis Flow Meter Sensor A Sensor B Sensor