Flow Cad software V2.0 Users manual.
Contents
1. 4 3 7 Viscosity liquids Constant Look up table Aiche Dippr801 Liquid Viscosity LVS Commonly Aiche formula 101 is used but note that you may use Andrade formula if you set C D 0 B Aiche formula 101 ee Anna Cir B Andrade s formula u cx r Andrade equation haves only 2 coefficients and B then if you have known viscosities LL at temperature T and u at T solve the following formulas for A and use them in Aiche formula 101 with C D E 0 PUR A n u 7 4 3 8 Isentropic expansion coefficient Constant In general isentropic coefficient is a slow varying property so it may be approximated by a constant value Look up table Ideal Gas Aiche ICP The isentropic coefficient is calculated using C the ideal gas specific heat at constant pressure p E __ Crd C i Cp R is obtained from Aiche formula 107 and R 8 314472E3 Real Gas Aiche ICP Redlich Kwong Z Isentropic exponent is calculated for a real gas using obtained from Aiche formula 107 and the actual compressibility Z obtained by Redlich Kwong from Tc and Pc critical parameters For more information refer to Miller pages 2 112 2 113 Flow Cad software V2 0 Users manual rev c www arian cl 19 4 4 Nist library NIST Reference fluid thermodynamic and transport properties database REFPROP V9 0 www nist gov srd nist23 cfm is not a integral part of this program2. As you may see this example is for air flowing thru a 100mm bore orifice plate in a 200mm pipe at any flow condition in a range from 1 to 2 Atm fluid upstream pressure OC to 30C temperature and 800 to 2400 Pa differential pressure on the orifice plate Calculation results are given in the lower frame as 8 lines corresponding to the combination of the 2 limits min and max given for P T dP as specified in the Flow Conditions frame You may think as 3 dimensional space composed of 3 axes P T and dP delimited by minimum and maximum values this way defining a cube with 6 side planes and 8 corner points dP T Each line on the list represents a corner point in the cube and any actual flow condition corresponds to a point inside this hypothetical cube Flow Cad software V2 0 Users manual rev c www arian cl 8 3 2 Setting up flow conditions P Upstream fluid pressure range must be contained within this limits If your pressure sensor transmitter measures absolute pressure referred to absolute vacuum then select Absolute units But if the sensor measures relative to atmospheric pressure then you must set Gauge units and specify the actual atmospheric pressure T Upstream fluid temperature range must be within this range dP Differential pressure range maximum and minimum you expect to have The minimum can not be cero mainly because ISO5167 needs a minimum Reynolds number of about 4000 typically With cero differe
3. CH3COCH3 CH3CH3 CH3CH3 H20 Acetone Gas Aiche dippr801 Formulas Acetone Liquid Aiche dippr8 1 Formulas Ethane Aiche dippr 01 Formulas Ethane Aiche dippr8 1 Formulas Water vapor super heated Aiche dippr801 H20 Water Liquid Aiche dippr 01 Formulas N2 02 Ar Air Carbon dioxide from tables Carbon monoxide from tables Helium tables Hydrogen Methane Nitragen Oxygen Water calculated from tables You may select the defined fluid with the Ok command or modify it with the Edit command For creating a new fluid edit a defined one and change fluid name Edit fluid Name Argon Formula optional State Gas C Liquid r Description Argon r Notes Generated from Nist database Test Temperature K Pressure Pascal 305 f 400000 Density Kg m3 6 316021 Viscosity Pa Sec 2 310547E 05 k Isentropic 1 67391 Save and Exit r Density Calculation Method Look up table Table file name 7 Argon tbd Fluid name Ar Tmin K 150 Tmax K 900 Pa 10000 P mex Pa 3000000 Generator ARGON FLD Viscosity Calculation Method Look up table Table file name Argon tbv Fluid name 150 900 min 10000 3000000 Generator ARGON FLD r Isentropic constant Calculation Method Look up table Table file name Argon thk
4. it must be purchased apart to the NIST Once installed it will connect directly to FlowCad software as if it was part of it 4 4 1 Installing Nist database First you must install NIST REFPROP software in the same PC as FlowCad following provided instructions Once done files will be located by default in C Program Files Refprop In the Refprop folder is a file called refprop dll and 2 sub folders named Fluids and Mixtures Place a copy of that file and 2 subfolders in the folder ArianFlowCad nist Now you must have ArianFlowCad nist Fluids ArianFlowCad nist Mixtures ArianFlowCad nist CustomMix ArianFlowCad nist refprop dll The CustomMix folder already was in nist folder and is not part of the database will contain your custom defined mixtures The Fluid and Mixtures folders contain files corresponding to Nist pure and predefined mixtures provided by Nist 4 4 2 Nist fluid types and selection Now can be used the Nist database from Arian Flow Cad selecting the Nist option from the fluid selection frame There are three types of fluids pure mixtures and custom mixtures Pure fluids and Mixtures are provided by Nist custom mixtures are user defined using Nist mixture rules for the pure components used in the mixture Nist Fluid Selection State Pure Gas Information Selected C Mix Liquid Ok AIR PPF Custom Mix Table Generate ACETONE FLD acetone 67 64 1 propanon
5. vapor pressure tables from measured temperature Flow Cad software V2 0 Users manual rev c www arian cl 12 4 2 Natural gas The AGA No 8 DC92 formulas are used as described on 15012213 document for computing natural properties Natural gas may have different compositions so for a particular case molar concentration in 96 of each component must be specified Normalize button is used for setting the sum of molar concentrations equal to 10096 This is done multiplying all concentrations by a fixed constant that modifies each individual concentration in order to be the sum 100 Selected components can be set as fixed so their molar 96 will not change on normalization Natural gas AGA No 8 DC92 LI LI LI a a a a a LI LI a Flow Cad software V2 0 Users manual rev c www arian cl 13 4 3 Defined fluids library Fluids from library are specified by separated for density viscosity and isentropic coefficient and each of this properties by formulas Aiche Dippr801 database coefficients or previously generated lookup tables Specified or defined fluids are stored as files on the lib folder BiU I selection Argon Ok Edit Delete Aiche_Acetone_Gas Aiche_Acetone_Liquid Aiche Ethane Gas Aiche Ethane Liquid Aiche Water Gas Ajche Water Liquid Air Ar qon Carbon dioxide Carbon monoxide Helium Hydrogen Methane Nitrogen Oxygen Water CH3COCH3
6. 2 0 Users manual rev c www arian cl 21 4 4 3 Custom mixtures Selecting custom mix type and by pressing Information command you will have the following form tm Nist Fluid Custom Mixture 300 100000 T EN FLD 0 21000000 Fixed 31 54 361 2000 If you are creating a new custom mix modify New file name field before saving Modify the mixture with Add and Remove component commands specifying the molar fractions for the new component and if it will be fixed or variable With the normalize command the variable molar fractions will be adjusted in order to have a total sum of molar fractions equal one Short name field is an optional text for reference Is recommended to test the fluid at a typical T P operating point for your project Flow Cad software V2 0 Users manual rev c www arian cl 22 4 4 4 Generating tables Tables containing density viscosity and isentropic exponent may be generated for any pure mixture or custom mixture fluid from the Nist fluid selection frame by pressing the Table generate command Generated tables will be stored in the lib tables folder for later use in this same PC or in other that doesn t have the Nist database installed i Table generator l x Generator AIRPPFO 7 Tablefilename TebleAIR Initial Final N Points Information notes AIR Temperature 300 faon fo PIDE Density 25208 Pa 1000000 Pa f Phas
7. 8 320 1 826 62 30 50 2 4 950 29 564 5 93 5 429 12 pe 199 2 4 3 525 39556 809 8594 14259 469 4 3565 49518 1092 isa 30292 662 63 833 1231 17 610 85 29404 960 _ e 7307 109 200 2192 3438576 smar 1885 864 49 s 1035s 197969 3974 6934944 13791 s 1 55 aas asas 86651 144670 4723 i0 13237 287 609 LA 14 649 331 ss4 6635 12072800 201576 6531 _ 84 72 14 947i jans 9670 The table above details the calibration data in water mass and volumetric flows corrected for a reference temperature and density at 20 C Flow rates above point 14 are extrapolated up to a maximum DP value of 498 18 mbar 3063 22 l min Flow Cad software V2 0 Users manual rev c www arian cl 30 5 4 McCrometer V Cone or Wafer Cone Load the example file located in files examples McCrometer_Vcone flw and go to Device menu you will find the following V cone example McCrometer Y Cone or Wafer Cone um s 1 55e 2 1 315 3531 FC 139 696 Psi m 95 074 Feet oi e E jsec_ por E You must fill the Cd discharge coefficient vs Reynolds number table provided by the manufacturer as well as the v cone size With the Calibration verification test point frame you may test the device for a specified fluid density viscosity isentropic coefficient provided at a T P operating point when a differential pr
8. ARIAN Flow Cad software V2 0 Users manual Flow Cad software V2 0 Users manual rev c www arian cl 1 0 The FL40 flow computer 2 0 Arian ISO 5167 Flow Cad software 3 0 Start up 3 1 General description 3 2 Setting up flow conditions 3 3 Setting up flow units 3 4 Calculation results 4 0 Fluids 4 1 Steam 4 2 Natural gas 4 3 Defined fluids library 4 3 1 Editing a fluid 4 3 2 Lookup tables 4 3 3 Using Aiche Dippr 801 coefficients 4 3 4 Density for gases 4 3 5 Density for liquids 4 3 6 Viscosity gases 4 3 7 Viscosity liquids 4 3 8 Isentropic expansion coefficient 4 4 Nist library 4 4 1 Installing Nist database 4 4 2 Nist fluid types and selection 4 4 3 Custom mixtures 4 4 4 Generating tables 5 0 Primary device 5 1 1s05167 Primary Device 5 2 Volumetric input mass flow 5 2 1 General volumetric case 5 2 2 Vortex flow meter 5 3 Spyrax sarco Gilflo ILVA primary element 5 4 McCrometer V Cone or Wafer Cone 6 0 Instrument parameters 6 1 Setting instrument parameters 6 2 Uploading configuration to the FL40 References Flow Cad software V2 0 Users manual rev c www arian cl Flow Cad software V2 0 Users manual rev c www arian cl 1 0 The FL40 flow computer The FL40 is a powerful multivariable flow computer specifically designed for use on primary devices designed under the 1505167 standard but can be used also in other devices as will be described in the present manual Calculates actual mass flow fro
9. Fluid name Ar 150 900 min 10000 3000000 Generator ARGON FLD Flow Cad software V2 0 Users manual rev c www arian cl 14 4 3 1 Editing a fluid The following are edit form parameters and functions Name file name on lib folder that will contain the fluid information Formula optional short formula information State must be specified for the working fluid Description short optional description of the fluid Notes optional larger text for fluid description Test frame allows to check density viscosity and isentropic coefficient for a specified working point Density viscosity and isentropic coefficient are edited in separated forms each containing specific formulas and methods now described 4 3 2 Lookup tables Lookup tables are text files stored in lib tables folder with extensions TBD TBV TBK for density viscosity and isentropic expansion coefficient respectively Tables are generated with this same program when the nist refprop dll file is available that is when you have installed the NIST Reference fluid thermodynamic and transport properties database REFPROP V9 0 or later www nist gov srd nist23 cfm But if you don t have installed NIST database still generated tables can be used with the advantage of having more speed since tables are pre calculated data 4 3 3 Using Aiche Dippr 801 coefficients Aiche Dipprr801 d
10. Redlich Kwong Same real gas equation but Z is calculated solving Redlich Kwong formula Z Z B B A Z AB 0 1 P A __ gt pp B 2 DE gt X T 7 with critical temperature C P Ta with Po critical pressure Aiche Dippr801 second virial SVR Second virial coefficient b is obtained from Aiche formula 104 Then molar density is obtained form the equation P _ p bp 0 RT p top d p Mw Flow Cad software V2 0 Users manual rev c www arian cl 17 4 3 5 Density for liquids Constant Liquids are incompressible fluids density changes on temperature and pressure changes are small so a constant could be a good approximation Look up table Aiche Dippr801 liquid density LDN Usually formulas 105 or 100 are used for liquid density 4 3 6 Viscosity gases Constant Sets a constant value for viscosity Look up table Aiche Dippr801 Gas viscosity VVS Commonly Aiche formula 102 is used Note that setting C D 0 you obtain the exponential equation AT approximation Aiche formula 102 P C D Exponential approximation If you have two known viscosities at a nearby operating temperature e g LL at temperature T and 4 at T solve the following formulas for A and use them in Aiche formula 102 with C D E 0 In y 9 Flow Cad software V2 0 Users manual www arian cl 18
11. arian cl 6 i Select Fluid Type i oO x Selected fluid Air C NIST Standard Reference Database 23 REFPROP C Natural gas AGA No 8 DC92 150 12213 2 1997 E Steam based on IAPWS IF37 C Superheated T and P meassured C Saturated P only meassured C Saturated T only meassured i Select Instrument and measuring device i ial x C Volumetric input mass flow correction e g vortex or turbine flowmeters C Spirax Sarco Gilflo ILVA primary element C McCrometer V Cone or Wafer Cone primary device NM im Primary device settings ojx m lso 5167 Formulas Iso Type jiso 5167 1 1991 Sec 8 Orifice plate v Ok Case Corner Taps v r Bore diameter d fo Stainless Steel 21 Upstream Pipe diameter D 200 nm 316 Stainless Steel 21 J Flow Cad software V2 0 Users manual rev c www arian cl Now press the calculate command and you must obtain something like this Arian 105167 Flow Cad E m b 0 gel Kc Bl 1 283295 1 721818E 05 1 401921 2228656 1 293295 1221818E 05 1 401921 1 129985 2 588129 1 723367 05 1 403296 3152626 2 588129 1 723367 05 1 403296 1 660808 1 1648 1 858854E 05 1 401181 2118185 11648 1 8b8854E 05 1 401181 1 07348 2 330449 1 870303E 05 1 402514 2995449 2 330449 1 870303E 05 1 402514 1 577473
12. atabase coefficients may be used if you have the database Examples using this coefficients for Acetone ethane and water are provided Information for those examples are in web site www aiche org dippr where you may buy the complete database for over 2000 components Dipprr801 database use formulas and coefficient sets to be used for each compound Some of the formulas are the following Formula 100 Y A BT CT DT B E 101 Y exp EO B 102 Y Ar C ETT Flow Cad software V2 0 Users manual rev c www arian cl 15 103 reas Bou B D E 104 Y A T qoo pe qe D 105 yo wih X 14 1 _ B C 106 Y A T with X 2 B CT DT ET and pt C 2 2 C E 107 Y A B 27 D sinh C T cosh E For example water liquid density is obtained by formula 100 with precision 0 296 in the range 273 16K to 353 15K using the following coefficients 1 3851 01 6 4038 01 1 9124 03 D 1 8211E 06 E 0 18 01528 Equation 100 1 3851E 01 6 4038 01 1 8124E 03 1 8211 06 Flow Cad software V2 0 Users manual rev c www arian cl 16 4 3 4 Density for gases Constant Sets a constant density Look up table Real Gas Equation Z constant Density is calculated using the real gas equation d Mw ZRT Mw Molecular weight gr mol Z Compressibility factor Z 1 for ideal gases R 8 314472E3 Real Gas Equation 2 as
13. ated properties Density p for the fluid at specified T P limits in MKS units always Viscosity LL of the fluid at specified T P limits in Pascal Sec units Remember that 1 Pa Sec 1000 centi Poise Isentropic exponent K of the fluid at specified T P limits dimensionless Density Kg m3 Viscosity Pa Se Isentropic Exp 0 1 800 1 293295 1 721818E 05 1 401921 0 1 24000 1 293295 1 721818E 05 1 401921 0 2 800 2 588129 1 723367E 05 1 403296 0 2 24000 2 588129 1 723367E 05 1 403296 30 1 800 1 1649 1 858854E 05 1 401181 3 1 24000 1 1648 1 868854 05 1 401181 30 2 800 2 330449 1 870303E 05 1 402514 30 2 24000 2 330449 1 870303E 05 1 402514 Following columns contain measuring device ISO 5167 orifice plate in this case results and information Qm Mass flow rate Q in specified units Qv Volumetric flow rate in specified units Velocity Fluid linear velocity V in specified units Re D upstream Reynolds number C discharge coefficient Expansion factor upstream P loss The pressure loss is the difference in static pressure between the pressure measured at the wall on the upstream side of the primary device at a section where the influence of the approach impact pressure adjacent to the plate is still negligible approximately D upstream of the primary device and that measured on the downstream side of the primary device where the static pressure recovery by expansion of the j
14. avior For example the manufacturer provides the following table with 4 points Frequency Flow cubic meter hour OHz 0 500Hz 1384 1000Hz 2281 1500Hz 3034 This example is files examples turbine1 flw file The maximum specified pulse output for the device is 2000Hz and is connected to a 4 20mA transmitter scaled as 0 2000Hz The 4 20mA will be the FI40 main input In this case our User Units are the frequency 0 2000Hz Table will be introduced specifying the number of points units and upper end as follows Flow Cad software V2 0 Users manual rev c www arian cl 27 Mass Volumetric flow input table Graphic is intended for verification purposes e g verifying you have correctly introduced table data expecting to have a regular curve Table points are represented in the graphic as green circles Data is interpolated between table points using 3 order polynomials segments for having a smooth curve instead of a set of straight segments Refresh command draws or refreshes the graphic with new table data The test point frame evaluates the curve at any point for example with 180Hz flow is 554 34 M3 Hour Later when configuring the FI40 flow computer in the Instrument tab you will have to use this same user units in the input setup Flow Cad software V2 0 Users manual rev c www arian cl 28 5 2 2 Vortex flow meter Vortex flow meters give a linear volumetric flow output there is no need to specif
15. ce will operate with a heat gas at 200C The bore diameter changes by thermal expansion Used diameter must be the one at that temperature but is not easy to put a caliper inside a pipe at 200C So you may measure the diameter with a caliper at environmental temperature e g 25C and specify the bore material and temperature of your measurement The software haves thermal expansion coefficients tables for typical bore and Pipe material and will correct continuously for the diameter at operating temperature Upstream Pipe diameter D Here accounts same considerations as for bore diameter Flow Cad software V2 0 Users manual rev c www arian cl 26 5 2 Volumetric input flow rate correction Flow cad may be used with volumetric flow meters and compensate with current density to obtain mass flow Some of them may already have a linear output but others not In such case you may use a several points table Applications for the table can be also for open channel flow measurement where you may describe the flow level relation in the table The mass input table option is when you already have a mass flow rate eg from a coreolis and you need to have the volumetric flow rate for verification porpuses 5 2 1 General volumetric case Typical applications are positive displacement devices that have a pulse output proportional to the flow At lower end viscosity effects makes pulse frequency slower inducing a non linear but repeatable beh
16. e air il nitrogen oxyqen 9 AMMONIAFLD ammonia 7664 41 ammonia 17 0 ARGON FLD argon 7440 37 1 argon 9995 BENZENE FLD benzene 71 43 2 benzene CBHE benzene 78 1 BUTANE FLD butane 106 97 8 n butane CH3 2 CH2 CH3 600 58 1 C12 FLD dodeca 112 40 3 dodecane CH3 0 CH2 CH3 n dodecane 170 C1ICC6 FLD methylc 108 87 2 methylcyclohexane C6H11 CH3 cyclohexylmeth 98 1 C2BUTENE FLD cis bute 590 18 1 cis 2 butene CH3 CH CH CH3 Z 2 butene 56 1 C3CC6 FLD propylc 1878 92 86 m propylcyclohexane CBHTT CH2CH propylcyclohex 125 C4F10 FLD perfluor 355 25 9 decafluorobutane C4F10 perfluorobutane 238 C5F12 FLD perfluor 678 26 2 dodecafluoropenta C5F12 perfluoropentane 288 g 651 Ct Ad mui 5214 07 ab moie me Ed Is necessary to specify first the phase state you are expecting to have at operating conditions for your selected fluid With the Ok command you select the fluid and with Information you may obtain information about general properties for the selected fluid and also test it at some T P point Flow Cad software V2 0 Users manual rev c www arian cl 20 im Nist Pure Fluid Information 300 100000 If it s a mixture then information about components is presented im Nist Fluid Mixture Information Component Mole Fraction Mw g mo _ TempminK Tempmex PmexkPs 300 100000 Flow Cad software V
17. e state Gas Save Table Precision Temperature at Max Error K 302 5 Pressure at Max Error Pa 887500 Max Error 76 985852 03 Sr eee 100000 1853715E 05 1 401239 1000000 1 867199E 05 1 413605 100000 2 30527E 05 1 396349 1000000 2316284 05 1 408896 100000 325000 550000 775000 1000000 al 300 1 1616 3 777744 6 397241 9 019882 11 64546 305 1 142509 3 715304 6 290913 8 869137 11 44978 310 1 124036 3 654911 6 188109 8 723442 11 26072 315 1 106154 3 596465 6 088655 8 582543 11 077395 320 1 088832 3 539873 5 992388 8 446204 10 90115 325 1 072046 3 485048 5 699155 8 314201 10 73003 330 1 055771 3 431906 5 608811 8 186329 10 5643 335 1 039983 3 380372 5 721225 8 062392 10 40373 340 1 024662 3 330372 5 636269 7 942209 10 24805 345 1 009786 3 28184 5 553826 7 825609 10 08706 350 0 9953375 3 23471 5 473784 7 712432 9 950525 355 0 9812969 3 188922 5 39604 7 602527 9 808261 360 0 9676476 3 144421 5 320494 7 495751 9 670077 365 0 9543735 3 101151 5 247054 7 391973 9 535797 370 0 9414592 3 059061 5 175632 7 291064 9 405255 375 0 9288903 3 018106 5 106145 7 192907 9 278285 l Table file name Table file name to be stored in lib tables Information notes Optional reference text for the table Property Select the property for witch the table will be made file extensions will be tbd tbv tk depending on the property selected In the table range frame you must specify the upper and lower limits of t
18. essure dP is present on the element Results will be the estimated mass flow on the device Flow Cad software V2 0 Users manual rev c www arian cl 31 6 0 Instrument parameters Once made the calculations and no restrictions reported you may prepare FL40 flow computer configuration 6 1 Setting instrument parameters Open the example file on files examples Air flw On the main menu first press the Calculate command to verify there is no comments or problems then go to Instrument menu where you will have the following form Pressure sensor Low 0 v High 20ma 10 Units Units Type Atmostenc Rreasure i 2 Atm x Absolute atm zj m Differential pressure sensor Low 0 v High 20ma 10 30000 v Flow rate display K mult C Mass x Ko Min prone Volume x Cubic Meter vw Min ill Ter ture Atm 0 1 800 13372 10 339 0 1 24000 67 799 52 424 0 2 800 18 916 7 309 0 2 24000 99 648 38 502 30 1 800 12 709 1081 30 24000 64 409 55 291 30 2 800 17 973 7712 30 2 24000 94 648 40 614 Config File DADSGNMflowNvbMilesNexamplesVAir flw Specify up stream pressure sensor calibrated limits on the Pressure sensor frame Low and high are the pressure values at low and high scale of the sensor e g 4ma 20ma or Ov 10v Later on the instrument you will set the input type but now you must speci
19. et may be considered as just completed approximately 6D downstream of the primary device Flow Cad software V2 0 Users manual rev c www arian cl 10 This is good approximation not exact for the effect of the primary device on flow before it is installed Must not be confused with dP the pressure difference on the primary element walls In general is expected to have dP larger than P loss Uncertainty The quadratic sum for the estimated uncertainty of C estimated uncertainty in as predicted by the 1505167 standard This is the uncertainty on the flow rate Q if no additional errors are made on measurements For details refer to 1505167 1991 Section 11 2 2 1505167 Condition not satisfied This last column expresses if the 1505167 standard is satisfied or not If you read the document you will find that there are several restrictions on the bore and pipe diameter the Reynolds number etc This restriction comes from the fact that the ISO standard was obtained from experimental results that are bounded under certain limits Is important to take care in being within the 1505167 limits unless you want the uncertainty on C and to be undetermined The ISO standard warranties that errors uncertainties are predicted So you must change your flow limits or primary device if you find a message in this column The message will tell you which is the limit or restriction that is not satisfied Flow Cad software V2 0 U
20. fy limits only Set also the units type depending on transmitter type absolute or gauge units The same must be done for differential pressure transmitter scale on the Differential pressure sensor frame Flow Cad software V2 0 Users manual rev c www arian cl 32 On the Flow rate display frame you set the flow rate type units and scale for the mass a volumetric rates that the FL40 will display If you need to have some custom flow rate units set the constant k mult to be multiplied to the flow rates other way this constant must be 1 Flow rates will be calculated internally in floating point format so you may set the decimal places you need in the configuration menu of the FL40 Only take care that if you will use the lower 4 digit display for a flow rate then the maximum display would be 9999 Check that on operating conditions this number never be exceeded If necessary then use k mult 20 001 for example When you press Calculate the contents of the bottom list will be calculated they are listed for the 8 limit conditions Display column shows exactly what will be the 4 digit rate reading on the FL40 Test different values for K by pressing Calculate command in order to have different display readings and select the better option Arian flow cad is intended to configure and set up the flow measurement on the FI40 mass flow meter its output will be a configuration file Pressing the Config File button will gene
21. he table for temperature and pressure and also the number of points contained Flow Cad software V2 0 Users manual rev c www arian cl 23 The table may have for example 20 temperature points for range from 300 to 400 Kelvin and 4 pressure points from 100000 to 1E6 Pascal This way the table will contain 20 4 80 points any intermediate T P point will be interpolated with the 4 nearest points Pressing the generate command the table is generated but not stored In the precision frame is presented the maximum error expected for the table and the T P point where was found In general the more the points in the table more precision In the middle frame four T P lines are listed with properties and phase state for the lower and upper T and P limits The software will check that the phase state in those limit points is same you already specified in the previous Nist fluid selection form No phase change is allowed within the table Finally the lower frame is the table data itself that will be stored in lib tables folder when Save command pressed Flow Cad software V2 0 Users manual rev c www arian cl 24 5 0 Primary device Primary device type is selected from the Device menu and may be of the types described as follows Select Instrument and measuring device jo x C Volumetric input mass flow correction e g vortex or turbine flowmeters C Spirax Sarco Gilflo ILVA primary element C McCrometer V Cone
22. its running full Part1 General principles and requirements Second edition 2003 03 01 Ref No ISO 5167 1 2003 E Part2 Orifice plates Second edition 2003 03 01 Ref No ISO 5167 2 2003 E Part3 Nozzles and Venturi Nozzles Second edition 2003 03 01 Ref No ISO 5167 3 2003 E Part4 Venturi tubes Second edition 2003 03 01 Ref No ISO 5167 4 2003 E AGA No 8 DC92 Starling K E Savidge J L Compressibility Factors for Natural Gas and Other Hydrocarbon Gases American Gas Association AGA Transmission Measurement Committee Report No 8 American Petroleum Institute API MpMS chapter 14 2 second edition November 1992 ISO 12213 Natural gas Calculation of Compression factor Part1 Introduction and guidelines Part2 Calculation using molar composition analysis IAPWS IF97 Release on the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam The International Association for the Properties of Water and Steam Erlangen Germany September 1997 www iapws org NIST Reference fluid thermodynamic and transport properties database REFPROP V9 0 www nist gov srd nist23 cfm General Richard W Miller Flow Measurement Engineering Handbook Third edition McGraw Hill ISBNO 07 042366 0 Flow Cad software V2 0 Users manual rev c www arian cl 34
23. m the 3 following parameters measured continuously dP Differential pressure input e g 4 20ma 0 10V P1 Up stream fluid pressure input e g 4 20ma 0 10 T1 Upstream fluid temperature input Pt100 thermocouples 4 20ma 0 10V BBBBBH Pt100 AN T IP fap x x Transmitters Orifice plate The fluid physical properties are stored on the FL40 so it calculates actual mass flow rate or volumetric flow if you prefer Additionally haves a 6 digit flow totalizer with alarms and communications functionalities that are described in detail in it s user manual Here we will concentrate on describing the input configuration for the FL40 witch is done with the help of the Arian Flow Cad software Flow Cad software V2 0 Users manual rev c www arian cl 4 2 0 Arian ISO 5167 Flow Cad software The Arian Flow Cad software is used for calculating discharge coefficient and expansion factor as 1505167 describes The software generates a configuration file that is downloaded to the FL40 with the RPS PC configuration system So you don t need to introduce manually a large set of configuration parameters Is strongly recommend to have a copy of the ISO 5167 document while you read this manual To install the software you will need a PC computer with windows 95 operating system or better svga 800x600 color monitor Uncompress it in any empty folder of your PC That is all what yo
24. ntial pressure you have cero fluid linear velocity and cero Reynolds Flow Conditions Min Max Units Units Type SITE 3521 3 3 Setting flow units Qm Set the mass flow units on witch you want the results to be presented Mass units can be of the volumetric equivalent type e g standard cubic feet or standard cubic meter If you set volumetric equivalent mass flow units for mass flow rate the you must then specify the standard conditions pressure and temperature For example if you are working with air Qm Stnd Cubic Ft Standard Conditions 1 Atm 21 C Then the mass flow rate will be expressed in units of mass equivalent to the mass contained in 1 cubic feet of air at 1Atm and 21C That is 33 96 grams Qv Same as previous but for volume flow units Velocity Same as previous but for linear velocity Flow Units standard galt te d Ko z deer Sec b Pressure absolute Temperature Qv Cubic Meter J iper Sec R Den at conditions Kg m3 1 192522 Velocity Meter Sec v Flow Cad software V2 0 Users manual rev c www arian cl 9 3 4 Calculation results On pressing calculate command you obtain in the lower 8 line lower frame the detailed flow conditions fluid properties and results for the orifice plate flow as follows First 3 columns are P T and dP in the units specified in the flow conditions frame The next 3 columns are the following fluid physical calcul
25. or Wafer Cone primary device 5 1 1505167 Primary Device This option is for primary devices described on ISO5167 document Primary device settings Of x r Iso 5167 Formulas lso Type jiso 5167 1 1991 Sec 8 Orifice plate Ok Case Comer Taps vj p safii fa mm 316 Stainless Steel 21 aj Ujenzi cherita i E j lt lt lt lt lt Dha a i ii 2 00 mm 316 Stainless Steel 21 zl Iso Type Select the standard under you want to do the calculations 1505167 1 1991 Sec 8 Orifice plate 1505167 1 1991 Sec 9 Nozzle 1505167 1 1991 Sec 10 Venturi tube 1505167 1 1991 Sec 10 1 Venturi tube 1505167 1 1991 Sec 10 2 Venturi nozzle Flow Cad software V2 0 Users manual rev c www arian cl 25 1so5167 1 1991 Amd 1 1998 Orifice plate 1505167 2 2003 Orifice plate 1505167 3 2003 Nozzle 1505167 4 2003 Venturi tube Case Once the standard is defined there are usually different cases you must specify For example for a orifice plate you must specify this design options Corner Taps D and D 2 Taps Flange Taps For a nozzle cases are ISA 1932 Nozzle Long radius Nozzle Bore diameter d You must set the bore diameter and the units e g mm inch Optionally you may introduce the bore material and the temperature at witch you measured that diameter This information is used for example in a situation where the primary devi
26. rate that configuration file sfg e g Air sfg in this case containing binary data to be downloaded to the FL40 using the RPS software It will be placed in the same folder of the project file e g files examples Also is generated file Air csv coma separated variables format containing a list of calculated flow rates for different conditions it can be opened as a spread sheet 6 2 Uploading configuration to the FL40 By other side the RPS remote programming software application will upload the sfg file and also help you setting other FL40 parameters such as alarms pressure inputs type temperature input type 4 20ma outputs and communications Place a copy of the Air sfg configuration file in the rps files subdirectory of the RPS software Then run RPS software with the FL40 connected to the PC and go to menu Device gt File write and select the Air sfg when requested Refer to the FL40 users manual and the RPS software manual for more information Flow Cad software V2 0 Users manual rev c www arian cl 33 References ISO 5167 ISO 5167 1 1991 E Measurement of fluid flow by means of pressure differential devices Part1 Orifice plates Nozzles and Venturi tubes inserted in circular cross section conduits running full Ref No I805167 1 1991 E ISO 5167 1 1991 Amd 1 1998 E Amendment 150 5167 Measurement of fluid flow by means of pressure differential devices inserted in circular cross section condu
27. sers manual rev c www arian cl 11 4 0 Fluids The physical fluid properties needed for flow calculations are density viscosity and isentropic this last one only for gases Arian Flow Cad V2 comes with routines and tables for the typical most common fluids such as steam natural gas air nitrogen oxygen and some others New fluids can be defined by means of programmed formulas or equations involving for example expansion factor Aiche coefficients values for some operating point Nist database interfaces directly with this software so it can be used if you have the license The Nist ddl comes with definitions for pure fluids mixes and rules for creating custom mixes 4 1 Steam Steam properties are calculated using the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam www iapws org The following 3 cases are considered Super heated steam T P measured Steam at a temperature higher than the boiling temperature at the working pressure conditions Is needed to measure both pressure and temperature Saturated steam P only measured Upstream pressure is the same of the chamber where steam is produced water boiled Pressure is measured and the steam temperature calculated from tables For example at 1Atm water boils at 100C at 1 2Atm boils at 105C etc Saturated steam T only measured This is the similar to the last case but temperature is measured Pressure is obtained from
28. u need to do you are ready for start up Since the program does not make any change on windows registry you may just delete all the files on the folder to uninstall it Flow Cad software V2 0 Users manual rev c www arian cl 5 3 0 Start up 3 1 General description Since flow cad version 2 had become larger and more complete we will follow several prepared examples to explain how it works Execute application ArianFlowCad V2 exe you will get the main form Arian 1505167 Flow Cad eric Pressure PP fe a fos Pp a rp d x e d x k wf gt standard Eonditons c 29 g gm ic Mee xem ec e The context menus are the following File Open Opens a new project file with extension fld File Save Saves the project file File Save as Saves with different name File Report Generates a project report files to be printed later In this example filename flw will generate filename Report txt and filename Report Data csv File Exit Quits Fluid Select and edit fluid properties Device Select the primary device type Notes Add here comments about the project Instrument Configuration files generation for the FL40b On the program go to File Open in the upper context menu and open files examples example_Air flw This is an example for air flowing on a orifice plate as you may check going to fluid and Device menus Flow Cad software V2 0 Users manual rev c www
29. y more than 2 points for the table For example a vortex flow meter that measures steam haves a 4 20ma output corresponding to 0 4500 cubic meter hour open file files examples vortex flw In this case we will set an auxiliary scale 0 100 and refer to it as our user units Mass Volumetric flow input table Same as previous example later when configuring the flow computer in the Instrument tab you will have to use this 0 100 user units in the input setup Flow Cad software V2 0 Users manual rev c www arian cl 29 5 3 Spyrax sarco Gilflo ILVA primary element Arian flow cad can be used with Spyrax Sarco ILVA devices For example load the file located in files examples Spyrax sarco ILVA flw and go to Device menu there you will find the following DN150 ILVA device example Spairax Sarco look up table for Gilflo ILVA primary element Vaolumetricflowtsble 3063082 of points 15 M Liter P 0 00 3 20 5 93 8 02 10 02 12 81 21 82 30 47 39 74 48 48 57 73 66 55 75 16 84 72 96 70 100 100 3063 082 r Calibration conditions g 50 J i 398 2 Dens Cal Kg m3 ra 29315 Tc Kelvin zu r User test point f Spon Liter Min E 80 245327 d 2m Ok Refresh e INT CUSTOMER P D P WATER MASS WATER VOL FLOW D P OUTPUT FLOW AT 20 C FLOW AT 20 C Se _ 1 4 512 715 92
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