Transcript
Prepared by Mustafa Ali , Senior Metering Tech,
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FlowMeasurementThrough
MULTIVARIABLE Transmitter
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Conventional Flow Calculation FLOW COMPUTER / DCS
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Traditional DP TRANSMITTER, DP flow has been calculated in a DCS or flow computer using a simplified mass flow equation. In simplified DP mass flow measurements, a constant is used to represent many of the terms in the flow calculation
The constant combines unit conversion factor, velocity of approach factor, gas expansion factor, and discharge coefficient.
The simplified flow equation cannot compensate for changes in these terms, resulting in unrecorded errors in the calculated flow rate.
Conventional Flow Calculation FLOW COMPUTER / DCS
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Enhance Flow Calculation MULTIVARIABLE TRANSMITTER
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Qmass = Mass flow N = units conversion factorCd = discharge coefficientE = velocity of approach factorY1 = gas expansion factord2 = bore of differential producerDP = Differential pressurep = density
The MULTIVARIABLE TRANSMITTER (3095MV) provides the greatest DP flow accuracy over the widest operating range by dynamically calculating all flow equation coefficients real time, including discharge coefficients, velocity of approach factor, thermal expansion effects, and density.
This fully compensated flow equation reduces the sources of traditional DP flow uncertainty, thereby providing a more accurate flow calculation. It uses a fully compensated equation from mass flow through any differential producer
Enhance Flow Calculation MULTIVARIABLE TRANSMITTER
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How Does MULTIVARIABLE Tx3095MV Calculate Mass Flow?
Using the EA Software the user enters the process fluid (EA database already knows molecular weight, isentropic exponent, and constants), primary element type and size, and pressure and temperature operating conditions.
The Model 3095MV measures the static pressure, differential pressure, and process temperature.
The internal flow computer dynamically calculates all flow equation coefficients in real time including: discharge coefficient, velocity of approach factor, thermal expansion effects, and density Result is the greatest DP flow accuracy over the widest operating range!
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Advantages of MULTIVARIABLE TRANSMITTER 3095MV
Primary element and fluid flexibility
Provides flow computer functionally in a single, compact package.
Dynamically Compensated mass flow
1% of mass flow rate accuracy over 10:1 flow range
Four measurements (Qm, DP, P, T) in one device providing real-time data to perform mass and heat balances across process units.
Output options 4-20 mA / HART based ,
Configuration of Pressure, Temp & DP through HART ,
Easy to configure with AMS & Engineering Assistant (EA) software
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The innovative technology and design of the Conditioning Orifice Plate enables multiple benefits without compromising performance.
The Conditioning Orifice Plate follows the discharge coefficient of the ISO 5167-2:2003(E) Conditioning Orifice Plate rivals the performance of the standard orifice plates while virtually eliminating straight pipe run requirements.
With sufficient straight run, the accuracy curve of the Conditioning Orifice Plate would follow the ISO 5167 standard.
Rosemout 1595 Conditioning Orifice Plate
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Conditioning Orifice Plate Technology is based on the same Bernoulli streamline energy equation and as a result follows the same Discharge Coefficientversus Reynolds Number relationship as standard orifice plates.
Installation in short straight pipe run, tight fit applications.
Improved performance in wet gas applications by allowingcondensate to pass and preventing the “damming” affectsuffered by standard orifice plates. None of the three standardsprovide allowances for drain vent holes in the orifice plate.
Rosemout 1595 Conditioning Orifice Plate
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Rosemout 1595 Conditioning Orifice Plate
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Rosemout 1595 Conditioning Orifice Plate
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Configuration with HART CommunicatorConfiguration with AMS / Engineering Assistant (EA) software
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Configuration with AMS / Engineering Assistant (EA) software
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Process parameters Display
Configuration with AMS / Engineering Assistant (EA) software
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Configuration with AMS / Engineering Assistant (EA) software Flow configuration wizard
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Configuration with AMS / Engineering Assistant (EA) software
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Configuration with AMS / Engineering Assistant (EA) softwareGas Calculation Method Selection
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Configuration with AMS / Engineering Assistant (EA) softwareGas Composition for Density measurement
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Configuration with AMS / Engineering Assistant (EA) softwarePrimary Element 1595 Conditioning Orifice Plate selection
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Configuration with AMS / Engineering Assistant (EA) softwareOperating envelope (Pressure & Temperature)
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Configuration with AMS / Engineering Assistant (EA) softwareAuto Compressibility Calculation for corrected volume
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Configuration with AMS / Engineering Assistant (EA) software Configuration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) softwareConfiguration properties
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Configuration with AMS / Engineering Assistant (EA) software
Online Validation on DP, Pressure & Temperature
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Configuration with AMS / Engineering Assistant (EA) softwareParameters display
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