Emerson Process Management 7951 manuals
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Emerson Process Management 7951 Manual
204 pages 2.53 Mb
Micro Motion 7951 Signal Converte r 7951 Signal Converter 14 FO R EXAMPL EPage 2.4 Figure 2.3: Prime Line density display L Y O N 39 OKPage 5.8 40 5.10 Step 7: Connecting the power supply 41 6. The keyboard, display and indicators 51 7. The menu system 7.1 What this chapter tells you 7.2 What the menu system does 7.3 How the menu system works 55 8. Alarms 61 9. Additional facilities 65 10. Configuring your instrument by using wizards 97 11. Configuring by using the menus 11.1 What does configuration involve? 11.2 Before you start 98 11.3 Recommended sequence for configuration 99 11.4 What Sections 11.5- 11.18 tell you Chapter 11 Configuring by using the menus 100 SFigure 11.1 An example of a Calibration Certificate for a 7812 gas density transducer Page 11.4 SChapter 11 Configuring by using the menus Page 11.5 101 11.5 Configuring analogue inputs Figure 11.3 Menu structure for configuring transducer details SGcalibrationGasY timeperiod Noisefilter Corrections Densityoffset Analoginputs Flowmeterdetails Analogueinput 9 InputtypeAverage Analogueinputs Flowmeterdetails Wizards Transducerdetails Value Analogueinput 3 Analogueinpu t 4 Analogueinput 1Analogueinput 7 Analogueinpu t 8 Analogueinput 5 From Configure option on Main Menu Figure 11.2 Menu structure for configuring analogue inputs 11.6 Configuring transducer details Wizards Transducerdetails VOS(optio nal) TemperatureK19 DensityK0 Specgrav'meter 1 Spec grav'meter 2 Gasdensitometer 1 Noisefilt er K2coefficient Calibrate From Configure option on Main Menu Chapter 11 Configuring by using the menus Page 11.6 102 11.7 Configuring transmitter detail Figure 11.4 Calculating line temperature 103 Chapter 11 Configuring by using the menus Figure 11.6 Calculating prover or atmospheric pressure0% 100% Offset mode value High Low Step Un-referredtemp Page 11.7 Figure 11.5 Calculating densitometer temperature0% 100% Low High Values Limits Fallbacks 104 Chapter 11 Configuring by using the menus Figure 11.7 Calculating live CO2, N2 and Cv/m Page 11.8 Chapter 11 Configuring by using the menus Figure 11.8 Menu structure for configuring transmitter detailLiveCv/m SelectSG@ 0% Basedensity @ 0% Linedensity @ 0% Atmospressure Page 11.9 Wizards Transducerdetails Analoginput s Flowrat e Linede nsity Linepressure Linetem perature Temperature Value Limits SourceBasedensity B Specific gravity B 105 From Configure option on Main MenuChapter 11 Configuring by using the menus Page 11.10 106 11.8 Configuring flowmeter details Figure 11.9 Calculating orifice mass and volume flow rate Chapter 11 Configuring by using the menus Page 11.11 AFigure 11.10 Calculating turbine mass and volume flow rate A 107 * *Chapter 11 Configuring by using the menus Page 11.12 108 AFigure 11.11 Calculating prime specific gravity B A BChapter 11 Configuring by using the menus Figure 11.12 Menu structure for configuring flowmeter detailsIsentropic DiffpressureTurbgross vol K Turbfreq hi limit Page 11.13 Wizards Transducerdetails Analoginputs Turbine K fact or Flowstopthreshold Turbinefrequenc y Corrections TurbineK curve Erroralarm limitOrificediameter Dynamicviscosity TurbineOrifexpand coeff Oriftapping code 109 From Configure option on Main MenuMassrate cal sel Chapter 11 Configuring by using the menus Page 11.14 11.9 Configuring flow rate Figure 11.13 Calculating turbine mass and volume flow rate A 110 * *Chapter 11 Configuring by using the menus Figure 11.15 Menu structure for configuring flow rate Page 11.15 Figure 11.14 Calculating standard volume rate 111 From Configure option on Main MenuChapter 11 Configuring by using the menus Page 11.16 112 11.10 Configuring totalisers Figure 11.16 Totalisation calculations 113 Chapter 11 Configuring by using the menus Figure 11.17 Menu structure for configuring totalisers Clearpulse outputEnergytotal Stdvolume total Mainturb error Totalisers Page 11.17 Wizards Transducerdetails Analoginputs Flowrate Linedensity Pulseoutput 5 Pulseoutput 3 Pulseoutput 4 Pulseoutput 1 Resettotals Inhibittotals Pulseoutputs Volume Grossvolume Resettotalisers Masstotal Volume to tal Grossvolume total Clearpulse outputs From Configure option on Main Menu Chapter 11 Configuring by using the menus Page 11.18 11.11 Configuring line density Figure 11.18 Calculating line density 114 AChapter 11 Configuring by using the menus Page 11.19 Figure 11.20 Calculating normalisation of gas components FIXED Input data AGA8 COMPRESSIBILITY CALCULATION RESULTS ALARM Input data (normalised):Figure 11.19 Calculating AGA8 density compressibilityLIVE Input data FIXED Inputdata GAS COMPONENT NORMALISATION RESULTS ALARM 115 Gas components:116 Chapter 11 Configuring by using the menus Figure 11.21 Calculating Nx-19 compressibility Page 11.20 Chapter 11 Configuring by using the menus Page 11.21 Figure 11.22 Calculating linear interpolation compressibility Figure 11.23 Calculating density referral 117 KDeChapter 11 Configuring by using the menus Figure 11.24 Menu structure for configuring line density Page 11.22 Wizards Transducerdetails Analogueinput s Flowrate Linede nsity (Units) (Liveor set ) Lined ensity A Linedensity B Primevalue Compressibility High 118 From Configure option on Main MenuOffset Comparison Chapter 11 Configuring by using the menus Page 11.23 119 11.12 Configuring base density 122 11.13 Configuring specific gravity Figure 11.28 Calculating specific gravity 123 Chapter 11 Configuring by using the menus Figure 11.29 Calculating specific gravity Page 11.27 Chapter 11 Configuring by using the menus Figure 11.30 Menu structure for configuring specific gravityMassof ai r High Mode (Selection) Page 11.28 PrimeSG sel SGprime value Prime value SGA value Value Mofair Value 124 From Configureoption on Main MenuChapter 11 Configuring by using the menus Page 11.29 125 11.14 Configuring energy Figure 11.32 Calculating energy flow rate Cm Cv Cm/vFigure 11.31 Calculating energyLIVE Input data FIXED Input data CALCULATE ENERGY RATE RESULTS Chapter 11 Configuring by using the menus Figure 11.33 Menu structure for configuring energy Page 11.30 126 From Configure option on Main MenuChapter 11 Configuring by using the menus Page 11.31 127 11.15 Configuring custom applications Figure 11.35 Menu structure for configuring custom applications PointerPointerc Pointerb Totalisers Analogueinp uts Flowmeterdetails A, B, X, Y a, b, c, d, e, f Usertitle =A+BFIXEDInput data RESULTS SPECIAL EQUATION1 a(b+Xc) de+Y f) User calculation Type1 A+Bt+Ct =eUser title ABCt User calculation Type2Constants Pointers Figure 11.34 Calculating custom applications Wizards Transducerdetails Flowrate Linede nsity Basedensity Specificgravity Pointera ConstantY Value Specialequation 1 Pointerd Value From Configure option on Main MenuChapter 11 Configuring by using the menus Page 11.32 128 11.16 Configuring mA outputs Figure 11.37 Menu structure for configuring mA outputs mAoutputs Otherparameters 100% Pointer Filter 0% ModemA(ANALOGUE) OUTPUT mAoutput FIXED Input data Values Cycle time Figure 11.36 mA outputsFilter Value Analogo utput 1 Value Filter Analogoutput 5 From Configureoption on Main MenuChapter 11 Configuring by using the menus Page 11.33 129 11.17 Configuring other parameters Figure 11.38 Menu structure for configuring other parametersmAoutputs Otherparameters Security Density Atmospressure Temperature Displayformats Time Standardvolume Calorificmass Energyrate Port1 Limitalar m X Alarmlogger Displaycontrast Instrumentcal Calibrationcode From Configure option on Main Menu 130 What the Other parameters option does 131 Passwords and security Chapter 11 Configuring by using the menus Page 11.36 Figure 11.40 Where to enter passwordsmAoutp uts Otherp arameters Displayformats Security 132 From Configure option on Main MenuChapter 11 Configuring by using the menus Page 11.37 133 11.18 Configuring Multiview Figure 11.42 A typical Multiview displaySpecificgr avity Energy mAoutputs Otherpar ameters Multi-view Line2 parameterTotalisers Analogueinputs Flowmeterdetails Wizards Transducerdetails Flowrat e Linedensity Basedensity Compressibility Line2 text Line1 text Displayline 3 Displayline 4 Displayline 1 Line3 text Line4 text From Configure option on Main MenuMenu level 2 Figure 11.41 Menu structure for configuring Multiview What is Multiview? How to get into Multiview 134 Configuring Multiview 137 12. Routine operation 12.1 What this chapter tells you 12.2 Viewing the data Chapter 12 Routine operation Menu structure: Flow rates, flow totals, line density and base density/SG Page 12.2 Flowrat es Basede nsity / SG Flowtotals 138 Main Menu Level 3 menusLevel 2 menus(Selection name) Stdvol flow r ate Energy flow rate Volume f low rate Grossflow rate (Value)Stdvol total Energyflow total Volumeflow totalMain turb error Proverturb error Grossflow totalLinedensity B Relativedensity Primelinedensity Highlimit (Selectionname)Densitylimits Selected density DensAtxd r reading Primebas e density PrimeSG value (Selectionname)Basedensity A Basedensity B Primebas e density (Liveor set) (Units) (Liveor set) Chapter 12 Routine operation Page 12.3 139 Main Menu Menu structure: Temperature, pressure and energy Level 2 menusLinetemperature Linetemp reading Absolutezero Linepressure Chapter 12 Routine operation Menu structure: Raw gas data and custom application Specialeq1 value Gasda ta update Entercomp data Page 12.4 Flowra tes Basede nsity / SG Flowtotals Pressure Rawgas data 140 Main MenuLevel 3 menusCustomapplication Healthch eck Level2menusPropane n-Butane (Gas type) C6+modei-Butane n-Hexane n-Decane C6+mode Newgas compos ArgonPassword Configure Hydrogensulp hide Carbon monoxide Chapter 12 Routine operation Menu structure: Health check Part 1 Statusinputs Statusoutputs mAinput 8 mAinput 7 V Page 12.5 Flowra tes Basede nsity / SG Flowtotals Pressure Rawgas data 141 Main MenuLevel 3 menusCustomapplication Healthcheck Level 2 menusDPvalue Turbinefreq. Timeperiod inputs Analoginputs TurbineinputsTimeperiod I/P 3 Timeperiod I/P 4 Time period I/P 1Analoginput 3 Analoginput 4 Analoginput 1 mAinput 5 mAinput 9 Statusinputs mAoutput 3 mAoutput 4 mAoutput 1 mAoutput 7 mAoutput 8 mAoutput 5Statusoutputs Useral arms Password Configure To Par t 2 of this menu Chapter 12 Routine operation 142 Level 3 menusMenu structure: Health check Part 2 Liveinputs Helium n-Decane i-Butane Total s Ethane Page 12.6 Level 2 menusMethane Propanen-Butane n-Hexane n-Heptane i-Pentane n-Nonane n-Octane ArgonOrifexpand factor Velof approach BetaCorrorif diameter Presslossvalue Reynoldsnumber Massrate K factor Standard From Part 1 of this menuChromat NitrogenCarbon dioxide Hydrogensulphide Carbonmonoxide Chapter 12 Routine operation Page 12.7 143 Main MenuMenu structure: Password, time, software version and unit ID Time Softwarev ersion Tagnumber Level 2 menusEnterpassword Timeand date Seeseparate menus forinformation about configuration 144 12.3 Security and passwords 12.4 How you can edit displayed information 12.5 Making data values Live or Set 145 12.6 Changing the units which are displayed 12.7 Changing fallback values 12.8 Changing the time and date 12.9 Checking the performance of the 795x 12.10 Giving your 795x a tag number Chapter 12 Routine operation Page 12.10 146 12.11 Printed reports Figure 12.2 Defining lists and printing reports Location17Location20 Location19 Location16 Location15 Location 4 Location3 The two types of report How to define a list of locations for reports Printreports Printrepor t Currentli st Location 5 Location2 Location1 Location 9 Location 14 Location13 Location18 Optionsa and b each goto identical 5-page menusto definethe lists 147 How to print a report Some typical reports 149 13. Routine maintenance and fault finding Chapter 13 Routine maintenance and fault-finding 150 Page 13.2 PROBLEM:Chapter 13 Routine maintenance and fault-finding Page 13.3 151 PROBLEM:Figure 12.2: Fault-finding chart 2: The display is blank 153 14. Removal and replacement of parts 159 15. Assembly drawing and parts list 15.1 What the drawing and parts list tell you 15.2 How to obtain spare parts 163 Appendix A Glossary AB C 164 D165 EF 166 HI J K 167 LM 168 PR 169 S T 170 U V W 175 Appendix C Technical data for the 7951 191 Appendix D Units and conversion factors Appendix E Data tables Page E.1 193 Appendix E Data tables E.1 The tables Note: The equations used to derive these tables are given in Section E.2. Density/temperature relationship of crude oil Density/temperature relationship of refined products Appendix E Data tables Page E.2 194 Platinum resistance law (To DIN 43 760) Density of ambient air (in kg/m3) at a relative humidity of 50% Density of pure water (in kg/m3to ITS - 90 Temperature Scale) Appendix E Data tables Page E.3 195 Velocity of Sound in Liquids 197 E.2. Equations used to derive data tables Density/temperature relationship ()Tangent thermal expansion coefficient Product compressibility []Velocity of sound in liquids 198 () 199 Appendix F Calculations and theory F.1 The VOS effect on density measurements = Periodic time of density transducer output signal (in s) 200 () Appendix F Calculations and theory Page F.3 Table F.1: 'K' Coefficient Look-up Values Table F.2: Gas data and 795x coefficients for Cg (VOS calculation) 201 () 202 () 204 Micro Motion7951 Signal ConverterOperating ManualHB511020, Rev. A November 2007
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