new compact low-flow measurement and control technologies
DESCRIPTION
New Compact Low-Flow Measurement and Control Technologies. Stephen P. Glaudel. Agenda. Traditional Instrumentation Packaging Analytical needs (small size) - SP76 Flow-Measurement Technology Choices Variable-Area (VA), Thermal-Mass (TMF), Coriolis, etc. - PowerPoint PPT PresentationTRANSCRIPT
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New Compact Low-Flow New Compact Low-Flow Measurement and Measurement and Control TechnologiesControl TechnologiesStephen P. Glaudel
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[File Name or Event]Emerson Confidential27-Jun-01, Slide 2
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AgendaAgendaAgendaAgenda
Traditional Instrumentation Packaging Analytical needs (small size) - SP76 Flow-Measurement Technology Choices
– Variable-Area (VA), Thermal-Mass (TMF), Coriolis, etc. Meter-only vs. Integral-Control / Valve ? Multivariable:
– Flow (mass, volume), Density, Pressure, Temperature, … Communications:
– Limitations of Analog I/O – Many Networks, Many Choices
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SP76 Industrial Downport SubstratesSP76 Industrial Downport SubstratesSP76 Industrial Downport SubstratesSP76 Industrial Downport Substrates
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SP76 Industrial DownportsSP76 Industrial DownportsThermal-Mass and VA meters & controllersThermal-Mass and VA meters & controllersSP76 Industrial DownportsSP76 Industrial DownportsThermal-Mass and VA meters & controllersThermal-Mass and VA meters & controllers
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Thermal Mass Flow(Gas or Liquid)
Flow k * Cp * Temp
Coriolis Mass Flow(Gas or Liquid)
Flow = k * Phase
Mass Flow Measurement and ControlMass Flow Measurement and Control
True Mass Measurement(plus Density)
Relative Immunity to: Fluid variations
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Coriolis and Thermal are Complementary Coriolis and Thermal are Complementary in Many Customers’ Gas Applicationsin Many Customers’ Gas ApplicationsCoriolis and Thermal are Complementary Coriolis and Thermal are Complementary in Many Customers’ Gas Applicationsin Many Customers’ Gas Applications
Molecular Weight
“Su
itab
ilit
y”
N2
(28)
He(4)
C4F8(200)
Cl2
(71)
Complex Halocarbons and Metalo-
Organics
Light Gas Heavy Gas
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Traditional Coriolis Meter PackagesTraditional Coriolis Meter PackagesTraditional Coriolis Meter PackagesTraditional Coriolis Meter Packages
LabView, Intellution, etc.
SensorsTransmitters
Users
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Small Coriolis Mass Flow SensorSmall Coriolis Mass Flow SensorSmall Coriolis Mass Flow SensorSmall Coriolis Mass Flow Sensor
Drive,Pickoffs,
& DSPElectronics
1.53”3.03”
Enclosure
Coriolis Tube
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Drive,Pickoffs,
& DSPElectronics
Small Coriolis Mass Flow SensorSmall Coriolis Mass Flow SensorSmall Coriolis Mass Flow SensorSmall Coriolis Mass Flow Sensor
1.53”3.03”
Modbus
LabView, Intellution, etc.
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+24Vdc
3 I/Osets
Flow
Small Coriolis Mass Flow SensorSmall Coriolis Mass Flow SensorSmall Coriolis Mass Flow SensorSmall Coriolis Mass Flow Sensor
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PID
Sensor(s) Valve
Only Difference Is The SensorThermal or Coriolis
Common ValveTechnologies
Common Electronics Integration: Packaging,Calibration, Tuning
Synergies Between Coriolis and Synergies Between Coriolis and Thermal Mass ControllersThermal Mass ControllersSynergies Between Coriolis and Synergies Between Coriolis and Thermal Mass ControllersThermal Mass Controllers
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Heat
T1 T2
PID
Coriolis Thermal Coriolis Thermal Coriolis Thermal Coriolis Thermal
Mass-Flow-Control: Mass-Flow-Control: Coriolis and Thermal SolutionsCoriolis and Thermal SolutionsMass-Flow-Control: Mass-Flow-Control: Coriolis and Thermal SolutionsCoriolis and Thermal Solutions
PID
DSP, Drive,Pickoffs
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Low-Flow Coriolis Integrated-Control:Low-Flow Coriolis Integrated-Control:Axial or Downport ConnectionsAxial or Downport ConnectionsLow-Flow Coriolis Integrated-Control:Low-Flow Coriolis Integrated-Control:Axial or Downport ConnectionsAxial or Downport Connections
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Volume vs. Mass FlowVolume vs. Mass FlowLiquid (Good Applications)Liquid (Good Applications)Volume vs. Mass FlowVolume vs. Mass FlowLiquid (Good Applications)Liquid (Good Applications)
3 Different Tube Sizes
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Volume vs. Mass FlowVolume vs. Mass FlowHeavy Gas (Good Applications)Heavy Gas (Good Applications)Volume vs. Mass FlowVolume vs. Mass FlowHeavy Gas (Good Applications)Heavy Gas (Good Applications)
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Volume vs. Mass FlowVolume vs. Mass FlowLight Gas @ Low Pressure (Dubious)Light Gas @ Low Pressure (Dubious)Volume vs. Mass FlowVolume vs. Mass FlowLight Gas @ Low Pressure (Dubious)Light Gas @ Low Pressure (Dubious)
Tube Pressure Drop vs. Flowrate
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Volume vs. Mass FlowVolume vs. Mass FlowLight Gas @ High Pressure (Good)Light Gas @ High Pressure (Good)Volume vs. Mass FlowVolume vs. Mass FlowLight Gas @ High Pressure (Good)Light Gas @ High Pressure (Good)
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Flow Performance Testing, CalibrationFlow Performance Testing, CalibrationFlow Performance Testing, CalibrationFlow Performance Testing, Calibration
Accuracy (%rate vs. F.S.),Turndown, Zero-Stability
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Multivariable InstrumentsMultivariable InstrumentsMultivariable InstrumentsMultivariable Instruments Flowrate (Mass- or Volumetric-) Totalizers Density Temperature Pressure(?) Calculated Values Diagnostics(?) Valve Characteristics Control Tunings…………….
+24Vdc---
4-20mA
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Each Network has its place (design optimum) Speed, Bandwidth Requirements Topology, Distance, Cable Management Power, Intrinsic Safety Mastership/Peer Considerations Scope of Vendors/Devices to be Networked Most Importantly, Market Drivers
There is often no Perfect Selection Many installations may end up with Two Buses
– E.g. FF (Process) and DeviceNet (Discrete)
Selecting ‘Open’ Communication NetworksSelecting ‘Open’ Communication NetworksSelecting ‘Open’ Communication NetworksSelecting ‘Open’ Communication Networks
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Common Themes1. Cost Savings: Installation, Diagnostics, Commissioning, etc.
2. PLC, DCS: ‘System’ issues, Industrial Market pressures
3. Electronic ‘Device Profile’ data (DDL, EDS, GSD…)
4. Conformance Testing, Training, Integration Partners
5. Need for modularly-designed instruments, when comm needs change….
Selecting ‘Open’ Communication NetworksSelecting ‘Open’ Communication NetworksSelecting ‘Open’ Communication NetworksSelecting ‘Open’ Communication Networks
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Questions?Questions?Questions?Questions?
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