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New Compact Low-Flow Measurement and Control Technologies

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.

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New Compact Low-Flow Measurement and Control Technologies

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  1. New Compact Low-Flow Measurement and Control Technologies Stephen P. Glaudel

  2. Agenda • 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

  3. SP76 Industrial Downport Substrates

  4. SP76 Industrial DownportsThermal-Mass and VA meters & controllers Company Confidential

  5. Thermal Mass Flow (Gas or Liquid) Flow @ k * Cp * D Temp Coriolis Mass Flow (Gas or Liquid) Flow = k * D Phase Mass Flow Measurement and Control True Mass Measurement (plus Density) Relative Immunity to: Fluid variations

  6. Coriolis and Thermal are Complementary in Many Customers’ Gas Applications Complex Halocarbons and Metalo- Organics Thermal He (4) N2 (28) C4F8 (200) “Suitability” Cl2 (71) Coriolis Light GasHeavy Gas Molecular Weight

  7. Traditional Coriolis Meter Packages Sensors Transmitters Users LabView, Intellution, etc.

  8. Drive, Pickoffs, & DSP Electronics Enclosure Coriolis Tube 1.53” 3.03” Small Coriolis Mass Flow Sensor

  9. LabView, Intellution, etc. Small Coriolis Mass Flow Sensor Modbus Drive, Pickoffs, & DSP Electronics 1.53” 3.03”

  10. Flow 3 I/O sets +24Vdc Small Coriolis Mass Flow Sensor

  11. PID Synergies Between Coriolis and Thermal Mass Controllers Integration: Packaging, Calibration, Tuning Common Electronics Sensor(s) Valve Only Difference Is The Sensor Thermal or Coriolis Common Valve Technologies

  12. PID PID DSP, Drive, Pickoffs Heat T2 T1 Mass-Flow-Control: Coriolis and Thermal Solutions Coriolis Thermal

  13. Low-Flow Coriolis Integrated-Control:Axial or Downport Connections

  14. Volume vs. Mass FlowLiquid (Good Applications) 3 Different Tube Sizes

  15. Volume vs. Mass Flow Heavy Gas (Good Applications)

  16. Volume vs. Mass Flow Light Gas @ Low Pressure (Dubious) Tube Pressure Drop vs. Flowrate

  17. Volume vs. Mass Flow Light Gas @ High Pressure (Good)

  18. Flow Performance Testing, Calibration Accuracy (%rate vs. F.S.), Turndown, Zero-Stability

  19. +24Vdc --- 4-20mA Multivariable Instruments • Flowrate (Mass- or Volumetric-) • Totalizers • Density • Temperature • Pressure(?) • Calculated Values • Diagnostics(?) • Valve Characteristics • Control Tunings…………….

  20. Selecting ‘Open’ Communication Networks • 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)

  21. Selecting ‘Open’ Communication Networks • Common Themes • Cost Savings: Installation, Diagnostics, Commissioning, etc. • PLC, DCS: ‘System’ issues, Industrial Market pressures • Electronic ‘Device Profile’ data (DDL, EDS, GSD…) • Conformance Testing, Training, Integration Partners • Need for modularly-designed instruments, when comm needs change….

  22. Questions?

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