OPTIMASS 6000 & MFC400 Launch 1 Optimize with OPTIMASS 2 nd European Flow And Measurement Workshop: Ultrasonic & Coriolis Metering Hassan Al-rawni March 2014 Title here again in Arial 24 max. one line Agenda Optimise with OPTIMASS 1.Introduction 2.Coriolis Meter Design Selection 3.Applications Using Coriolis Mass Flow meters
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Optimize with OPTIMASS - VSL · OPTIMASS 6000 & MFC400 Launch 1 Optimize with OPTIMASS 2nd European Flow And Measurement Workshop: Ultrasonic & Coriolis Hassan Al-rawni Metering
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OPTIMASS 6000 & MFC400 Launch
1
Optimize with OPTIMASS 2nd European Flow And Measurement Workshop: Ultrasonic & Coriolis Metering Hassan Al-rawni
March 2014
Title here again in Arial 24 max. one line Agenda Optimise with OPTIMASS
1.!Introduction 2.!Coriolis Meter Design Selection 3.!Applications Using Coriolis Mass Flow meters
OPTIMASS 6000 & MFC400 Launch
2
Title here again in Arial 24 max. one line Agenda Optimise with OPTIMASS
1.!Introduction 2.!Coriolis Meter Design Selection 3.! Applications Using Coriolis Mass Flow meters
Coriolis principle History and effect Discovered by
!! Gaspar Gustav de Coriolis (1835)
Coriolis effect
!! “Apparent deflection of a moving object in a rotating frame of reference.”
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OPTIMASS 6000 & MFC400 Launch
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7 | Coriolis mass flow meters | May 2011
Theory of operation A practical example
Coriolis Principle A practical example
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M
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9 | Coriolis mass flow meters | May 2011
Theory of operation Mass flow measurement
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Theory of operation Mass flow measurement dual straight tube
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11 | Coriolis mass flow meters | May 2011
Theory of operation Mass flow measurement dual bent tube
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Theory of operation Mass flow measurement Optimass 7000
OPTIMASS 6000 & MFC400 Launch
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Theory of operation Density
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Coriolis mass flowmeter !! Independent density
measurement Hooke’s law spring equation !! k = Spring constant !! m = Spring system mass !! f = Resonant frequency of
the spring mass system Mass attached to a spring !! Mass reduces, frequency
increases !! Mass increases, frequency
reduces Resonant frequency (f) depends
on mass of spring system
f
Heavy
Light 5Kg
k
2! 1 k
m f = Hooke’s law
spring equation m m
10Kg
Theory of operation Density
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m tube, V tube = constant m fluid
Relating Hooke’s Law to the Coriolis meter
Mass of the system comprises
!! Mass of the tube (m tube) - fixed
!! Mass of the fluid (m fluid) - variable
Mass of the fluid is calculated
!! Tube volume (v tube) - fixed
!! Fluid density (" fluid) - variable
!! m tube and v tube - constant
!! Frequency can be measured
!! Density can be calculated
! fluid = k - m tube V tube
+ m fluid
• ! fluid
m = m tube
mtube
mfluid
= V tube
vtube
!fluid
• v tube • 4"2 f2
1/#" fluid f
2! 1 k
m f = Hooke’s law
spring equation
OPTIMASS 6000 & MFC400 Launch
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Theory of operation Volume
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Volume flow rate = mass flow rate / density of product
The Coriolis mass flowmeter measures
!! Mass flow
!! Density
Provides calculation of
!! Volume flow rate
!! Total Volume
Theory of operation Temperature
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Temperature effects include !! Stiffness
!! Expansion and contraction
!! Stresses
Coriolis meter offers
!! Platinum RTD’s
!! Thin wall tubes enclosed in an outer case
!! RTD is bonded to the outside of measuring tube
!! Temperature data is made available to the user
RTD’s
Thin wall tubes
OPTIMASS 6000 & MFC400 Launch
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Title here again in Arial 24 max. one line Agenda Optimise with OPTIMASS
1.!Introduction 2.!Coriolis Meter Design Selection 3.! Applications Using Coriolis Mass Flow meters
Mass Flow Meter Perfomance Measurement Performance
Linearity, Reproducibility and “flat line” Accuracy
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Basic sizing and selection Selection With so many choices, it is important to make the correct selection of meter.
Historically, choices were limited by
!! Performance
!! Availability
Today a wider choice exists. This allows the user to focus on what is best for each individual application. This can be determined by a number of factors
!! Accuracy
!! Pressure Drop
!! Velocity
!! Design conditions
!! Material compatibility
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Coriolis meter – tube designs A comparison
Twin tube
Description Notes Tube Profile !!U - Design
!!V - Design Triangle - Design $ - Design
!!S and Z tube
Original (first) design, remains in common use
Evolution of U which allows self-drainage Evolution of U providing high signal amplitude Traditional design, often requires mechanical damping
Good signal, can be pressure sensitive
OPTIMASS 6000 & MFC400 Launch
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Tube Profile
Coriolis meter – tube designs A comparison
!!Twin straight tube meters provide a similar amplification to the twin bent tube
!!designs
!!With advantages of low pressure drop and secondary containment
!!And ease of installation
Twin straight tube
Single straight tube
!!Single straight tube meters offer the lowest pressure drop
!!Measurement is referenced to a rigid structure,
!!Also provide secondary containment and ease of installation
!!Ideal for abrasive or high viscous applications
Description Notes
Single bent tube !!Single bent tube designs exist in many of the same profiles as twin bent tubes
!! For single S and Z meters drive and sensor measurement are referenced from a rigid support structure
!!used for low flow meters
Coriolis meter – tube designs Dual Bent tube
Well established design
!! Since early 1980’s
!! “established” design
No internal reference structure
!! Tubes vibrate with respect to each other
!! Increases signal
Low internal stresses
!! Bends allow natural expansion of tubes at higher temperatures
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Wide operating range
!! High accuracy capable
!! Biggest turndown ratios
Maintainability
!! Reduced mounting options
!! Self draining
High Temperatures & Pressures
!! Cryogenic or up to 400°C
!! Thicker tube materials
!! Higher pressures
!! Line sizes – DN2 up to DN400
‹P› DN 02-400
Coriolis meter – tube designs Dual Bent tube
Compact design
!! Small installation envelope
Design
!! Thin wall tubing to generate sufficient signal
!! Dual/twin tube increases overall signal
Rigid construction
!! High burst pressures
!! Certified secondary containment possible
!! High operating pressures even with thin wall tubing
Coriolis meter – tube designs Dual Straight tube
OPTIMASS 6000 & MFC400 Launch
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Higher turndown ratios
!! Measurement at low flows
!! High accuracy
Reduced velocity
!! Ideal for low density fluids
Maintainability
!! Self draining
!! Easy to inspect
!! Cleanable
Design
!! Temperatures: 130°/150°C
!! Sizes: D15 up to DN300 flanges
F DN
15-300
Coriolis meter – tube designs Dual Straight tube
Compact design
!! Small installation envelope
Design
!! Inner reference structure
!! Uses Thin wall tubing with increased overall length to generate signal
Rigid construction
!! High burst pressures
!! Certified secondary containment possible
!! High operating pressures even with thin wall tubing
!! Secondary containment
Coriolis meter – tube designs Single straight tube
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Maintainability
!! Self Draining
!! Easy to inspect
!! Cleanable
!! Pigable (pipeline inspection gauging possible)
Lower pressure drop
High Accuracy
Ideal for applications with
!! Slurries and abrasive fluids
!! Shear sensitive fluids
!! High viscosity fluids
!! Corrosive fluids
Secondary containment
›P‹
DN 06-100 ""
Coriolis meter – tube designs Single straight tube
!!A
!!A
!!A’
!!A’
!!!hoop
!!!hoop
!!How the Bourdon effect distorts a bent tube Coriolis meter measuring tube
!!How hoop stress increases as internal tube pressure increases
!!The tube diameter
increases and the tube stiffens
!!Tube bends straighten and
deform the tube profile
!!Bourdon effect does not affect straight tube meters
!!Hoop stress affects both straight and bent tube meters
!
P !!P+
!!kPa (psig) !!Line Pressure
!!P
!!P+
!!kPa (psig) !!Line Pressure
!!How a Bourdon pressure gauge works
!!Thin wall tube straightens as
pressure increases
!!Thin wall tube
Coriolis meter – tube designs Pressure effect compensation
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Straight tube consideration Temperature Effect
!Temperature effects include
•! Stiffness
•! Expansion and contraction
•! Stresses
•! Thin wall tubes enclosed in an outer case
!!Temperature effect compensation
•! By axially mounted strain gauges
Thin wall tubes
Basic sizing and selection Selection !! Accuracy
!! Pressure Drop
!! Velocity
!! Design conditions
!! Material compatibility
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Optimass Range Product Positioning & Performance Overview
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1000 SS 2000 SS 3000 6000 7000 Ti 7000 SS 7000 HC 7000 Ta Nom. Diameter mm 15 - 50 100 - 250 1 - 4 8 - 250 6 - 80 6 - 50 10 - 80 10 - 50