06 Flow Seminar DP - Lesman · · 2012-09-21Liquid level transmitter Absolute-pressure...
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Page 1 Flow seminar © Siemens Industry, Inc. 2010 This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens. Differential Pressure Product family introduction Principle of operation Product review Applications Key product features
Transcript of 06 Flow Seminar DP - Lesman · · 2012-09-21Liquid level transmitter Absolute-pressure...
Page 1Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
Differential PressureProduct family introductionPrinciple of operationProduct reviewApplicationsKey product features
Page 2Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
Liquid level transmitter
Absolute-pressuretransmitter
Pressure transmitter
Differential pressure andflow transmitter
Product family
Principle of operation
Product overview
Applications
Key features
Product Family Introduction – DS III Pressure Transmitter
Page 3Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
Simplified View of how an Orifice Plate works
-A High pressure is required to force the fluid thru the small hole in the orifice plate-When the flow passes thru the hole in the plate it is at a lower pressure because of the small diameter is emptying into the larger diameter
P2P1Product family
Principle of operation
Product overview
Applications
Key features
DP Flow Theory
Page 4Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
Venturi Tube & Orifice Plate utilizes Bernoulli’s Equation & Conservation of Energy to measure flow
-Flow is the product of the Velocity and the Area-Velocity is dependent upon Cross sectional area in Area 1 & 2-Energy consists of Static (mgh) term and Kinetic (½mV²) term
Thus the difference in pressure is related to the square of the velocity, this is why the square root of the DP is equal to Flow
P2V1
P1
V2
P2P1Product family
Principle of operation
Product overview
Applications
Key features
DP Flow Theory
Page 5Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
DP Flow Theory
Product family
Principle of operation
Product overview
Applications
Key features
Page 6Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
AdvantagesUser familiarityEasy installation/calibrationLow Instrument Cost½” NPT, direct or remote seal process connections, wide variety of choices
DisadvantagesAffected by product densityLimited to atmospheric
Gauge Pressure
Product family
Principle of operation
Product overview
Applications
Key features
Page 7Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
AdvantagesUse with condensable fluidsUser familiarityEasy installation/calibrationReasonable Instrument Cost NPT, direct or remote seal process connections, wide variety of choices
DisadvantagesAffected by product densityValving and piping increase costMultiple Fugitive Emission points
Differential Pressure – Wet Leg
Product family
Principle of operation
Product overview
Applications
Key features
Page 8Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
AdvantagesUser familiarityHigh accuracyNPT, direct or remote seal process connections, wide variety of choices Easy installation/calibrationReasonable Instrument Cost
DisadvantagesAffected by product densityValving and piping increase costMultiple Fugitive Emission points
Differential Pressure – Dry Leg
Product family
Principle of operation
Product overview
Applications
Key features
Page 9Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
AdvantagesUser familiarityEasy installation/calibrationDirect or remote seal process connections, wide variety of choicesReasonable Instrument Cost
DisadvantagesAffected by product densityAccuracy affected by temp. changesCapillary and seals increase cost
Differential Pressure with Remote Seals
Product family
Principle of operation
Product overview
Applications
Key features
Page 10Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
5 year Powered Warranty
350 yr MTBF
100% for 3 yearsBased on
Operating Hours Meter
Product family
Principle of operation
Product overview
Applications
Key features
Page 11Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
Transmitter Configuration
Product family
Principle of operation
Product overview
Applications
Key features
Can be set on site or via digital communication(HART protocol, Profibus PA)
Zero and Full Scale can be set on site without applying pressure (blind adjustment)
Electrical dampingLoop check functionLinear/sq. root characteristic
curve with differential pressuretransmitter
Output signal in the case of error (3.6 mA or 22.8 mA)
Push Button LockoutPlant-specific effects
(such as position error) compensated at the press of a button
Page 12Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
SPAN
ZERO
Present value
Select Parameterwith Mode Button
Change valueof the parameter
Mode number
mA
Configuration with Magnetic Pushbuttons
Product family
Principle of operation
Product overview
Applications
Key features
Page 13Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
-Operating Hours Meter-Two Elapsed Time Meters-Six -- Min / Max Registers-Three Configurable Event Counters-Output Current Alarms-Simulation Output
Siemens DS III
World Class DiagnosticsProduct family
Principle of operation
Product overview
Applications
Key features
Page 14Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
Product family
Principle of operation
Product overview
Applications
Key features
ApplicationsDP Transmiters are used in many flow applications
Gas, Liquid or Steam FlowPressures from atmosphere to >6000 PSITemperature from Cryogenic to >1000 F
Used Everywhere, But Most Popular In Refining & PetrochemicalsOil & GasPower, both Utility and Industrial
Siemens DS III
Page 15Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
SITRANS P Series DS III Pressure Transmitter
Product family
Principle of operation
Product overview
Application
Key features High accuracy (0.071+.0029*TD)% (incl. hysteresis + repeatability)
High long-term stability of 0.25% per 5 years
Measuring spans of 0.4“ H2O to 5800 psiLocal setup without HandheldExotic Diaphragms for aggressive
process materials
Electronics and Capsule are Independent4-20mA HART or PROFIBUS-PA Hazardous Area ratings from FM, CSA &
CENELECIntrinsically Safe, Explosion proof &
FlameproofWorld Class Diagnostics
No Handheld Needed!World Class Diagnostics!!
5 Year Powered Warranty
Page 16Flow seminar
© Siemens Industry, Inc. 2010This document should not be duplicated, used, distributed, or disclosed for any purpose unless authorized by Siemens.
DP Flow
• Largest installed base
• Fits any size pipe
• Variety of primary elements
• Orifice, Venturi, Nozzle, Pito…
• 0.75% - 2% accuracy
• Local set-up and diagnostics
• Liquids / Gas / Steam
• No liquid or gas restrictions
• Approvals FM/CSA Class I, Div I & II
