Emerson Process Management 7951

Chapter 13 Routine maintenance and fault-finding

Page 13.4

Contents

Main Micro Motion 7951 Signal Converte r 7951 Signal Converter (With gas software 1020) IMPORTANT NOTICE Static precautions CAUTION Safety information WARNING Battery-backed Memory notice CONTENTS 1. About this manual 1.1 2. Getting started 2.1 3. About the Micro Motion 7951 3.1 4. What you can connect to a 7951 4.1 6. The keyboard, display and indicators 6.1 7. The menu system 7.1 8. Alarms 8.1 9. Additional facilities 9.1 10. Configuring the instrument using wizards 10.1 11. Configuring the 7951 using the menus 11.1 12. Routine operation 12.1 13. Routine maintenance and fault-finding 13.1 14. Removal and replacement of parts 14.1 15. Assembly drawing and parts list 15.1 Appendices Page 1. About this manual Page 2. Getting started 2.1 What this chapter tells you 2.2 What the examples show you 2.3 If you need help... 2.4 Example 1: 7951 with a 7810/11/12 gas density meter 1 2 3 4 7951 Klippon D-type PL5/9 PL5/1 PL5/10 PL5/2 SK6/22 SK6/14 SK6/24 SK6/15 7812 FO R EXAMPL E Page 2.4 Figure 2.3: Prime Line density display L Y O N End of Worked Example 1 2.5 Example 2: 7951 with a 3096/3098 Gas Specific Gravity Meter Klippon D-type 79513096/3098 Klippon D-type 7951 3096/3098 From Multi-view key End of Worked Example 2 2.6 Example 3: 7951 with a mA-type temperature transmitter Page Page 2.7 Example 4: 7951 with a mA-type pressure transmitter End of Worked Example 4 2.8 Example 5: 7951 with a PRT-type temperature transmitter End of Worked Example 5 Page Page 3.1 3. About the Micro Motion 7951 3.1 Background 3.2 What the 7951 Dual Channel Gas Signal Converter does Page 3.2 3.3 Physical description of the 7951 3.4 Communications Page 3.3 3.5 Typical installations 3.6 Checking your software version Page Page Page Page 5.1 5. Installing the system 5.1 What this chapter tells you 5.2 Hazardous and non-hazardous environments 5.3 Installation procedure 5.4 Step 1: Drawing up a wiring schedule 5.5 Step 2: Unpacking the instrument Page 5.3 5.6 Step 3: Setting DIP-switches 5.6.1 Analogue Input DP-switches 5.6.2 Turbine Voltage Selection switches Page 5.4 5.7 Step 4: Fitting the 7951 Page 5.5 Page 5.6 5.8 Step 5: Making the external connections 5.9 Step 6: Earthing the instrument OK Page 5.8 5.10 Step 7: Connecting the power supply 6. The keyboard, display and indicators 6.1 What this chapter tells you 6.2 The layout of the front panel 6.3 What the display shows 6.4 How the buttons work c 6.5 Using the buttons to move around the menus a - dbuttons Each of these buttons selects the menu choice next to it. If there is no 6.6 Using the buttons to view stored data 6.7 Using the buttons to edit information 6.7.1 Text editing 0 - 9buttons Each button en ters a single digit. Page 6.7.4 Date and time editing 0 - 9buttons Each button enters a single digit. 6.8 The 795x character set 6.9 LED indicators Page Page Page 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 Page Page Page 8. Alarms 8.1 Alarms 8.1.1 Alarm types 8.1.2 Alarm indicators 8.1.3 How alarms are received and stored 8.1.4 Examining the Alarm Status Display and Historical Alarm Log 8.1.5 What the Alarm Status Display tells you 8.1.6 What the entries in the Historical Alarm Log tell you 8.1.7 Clearing all entries in the Historical Alarm Log 8.1.8 Alarm Messages Chapter 8 Alarms Page 8.5 Page 9. Additional facilities 9.1 What this chapter tells you 9.2 Selecting units and data formats 9.3 Lim its 9.4 Fallback values and modes 9.5 Analogue 0% and 100% values 9.6 Live and set data Chapter 9 Additional facilities Page 9.3 9.7 Units which the 795x can display Page 10. Configuring your instrument by using wizards 10.1 What this chapter tells you 10.2 Wizards: Configuring the easy way From Configure option on Main Menu 10.3 Wizard Maps: Conventions used Chapter 10 Configuring your instrument by using wizards Figure 10.2: Key to wizard map conventions Page 10.2 10.4 Quick-start Guide ( Set-up Wizards ) 10.5 Set-up Wizard Selection Map 10.6 Units Wizard Selection Map Units wizard (Selection) Exit wizard 10.7 Density 1 application wizard Temperature & VOS Correction Sequences 10.8 Density 2 application wizard Temperature & VOS Correction Sequences 10.9 SG-1 Application Wizard 10.10 SG-2 Application Wizard 10.11 SG-1&2 Application Wizard Chapter 10 Configuring your instrument by using wizards Page 10.13 10.12 Line density wizard Line density Wizard Map - Part 1 of 3 This wizard configures the 795x for getting line density A and/or line density B data. Sequence : Line density B measurement Chapter 10 Configuring your instrument by using wizards Page 10.15 Sequence : Line density B measurement using PTZ1 method Line density Wizard Map - Part 3 of 3 Route 1 Route 4 Route 2 10.13 Base density wizard H2 H1 Chapter 10 Configuring your instrument by using wizards Page 10.17 Sequence : Base density B measurement using the PTZ1 method Base density Wizard Map - Part 2 of 2 Route 1 Route 4 Route 2 10.14 Specific gravity wizard I1 Sequence : Specific gravity B measurement from an analogue input I1 Chapter 10 Configuring your instrument by using wizards Page 10.20 10.15 Temperature wizard Temperature Wizard Map - Part 1 of 2 Chapter 10 Configuring your instrument by using wizards Temperature Wizard Map - Part 2 of 2 Page 10.21 10.16 Pressure wizard Sequence : Atmospheric pressure from an analogue input 10.17 Transmitter wizard L2 L1 Sequence : Live N2 from an analogue input L1 Sequence : Live energy value from an analogue input L2 Chapter 10 Configuring your instrument by using wizards Page 10.27 10.18 Special Calculation wizard Multi-view Wizard Map Setup wizard Special Calc. 10.19 Analogue outputs wizard Chapter 10 Configuring your instrument by using wizards Page 10.29 10.20 Alarms wizard Alarms Wizard Map 10.21 Multi-view wizard 10.22 Full Setup Page 11. Configuring by using the menus 11.1 What does configuration involve? 11.2 Before you start 11.3 Recommended sequence for configuration 11.4 What Sections 11.5- 11.18 tell you Chapter 11 Configuring by using the menus S Figure 11.1 An example of a Calibration Certificate for a 7812 gas density transducer Page 11.4 S Chapter 11 Configuring by using the menus Page 11.5 11.5 Configuring analogue inputs Figure 11.3 Menu structure for configuring transducer details SGcalibration GasY timeperiod Noisefilter 11.7 Configuring transmitter detail Figure 11.4 Calculating line temperature Chapter 11 Configuring by using the menus Tpos Figure 11.6 Calculating prover or atmospheric pressure 0% 100% Offset 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 Flowmeterdetail s From Configure option on Main Menu Chapter 11 Configuring by using the menus Page 11.10 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 A * * Chapter 11 Configuring by using the menus Page 11.12 A Figure 11.11 Calculating prime specific gravity B A B Chapter 11 Configuring by using the menus Flowmeterdetails Figure 11.12 Menu structure for configuring flowmeter details From Configure option on Main Menu Massrate cal sel Chapter 11 Configuring by using the menus Page 11.14 11.9 Configuring flow rate * * Chapter 11 Configuring by using the menus High Low Figure 11.15 Menu structure for configuring flow rate RD Air density From Configure option on Main Menu Chapter 11 Configuring by using the menus Page 11.16 11.10 Configuring totalisers Figure 11.16 Totalisation calculations Chapter 11 Configuring by using the menus Flowmeterdetails Figure 11.17 Menu structure for configuring totalisers Clearpulse output Energytotal A Chapter 11 Configuring by using the menus Page 11.19 LIVE Input data Figure 11.20 Calculating normalisation of gas components Input data (normalised): Figure 11.19 Calculating AGA8 density compressibility LIVE Input data FIXED Inputdata GAS COMPONENT NORMALISATION 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 KDe Chapter 11 Configuring by using the menus Flowmeterdetails Figure 11.24 Menu structure for configuring line density Fallback From Configure option on Main Menu Offset Comparison (Value) Chapter 11 Configuring by using the menus 11.12 Configuring base density Figure 11.25 Base density Chapter 11 Configuring by using the menus Figure 11.26 Calculating base density Page 11.24 Chapter 11 Configuring by using the menus (Selection) From Configure option on Main Menu Chapter 11 Configuring by using the menus Page 11.26 11.13 Configuring specific gravity Figure 11.28 Calculating specific gravity Chapter 11 Configuring by using the menus Figure 11.29 Calculating specific gravity Page 11.27 Chapter 11 Configuring by using the menus V From Configureoption on Main Menu Chapter 11 Configuring by using the menus Page 11.29 11.14 Configuring energy Figure 11.32 Calculating energy flow rate Select mass or volume Cm Cv From Configure option on Main Menu Chapter 11 Configuring by using the menus Page 11.31 11.15 Configuring custom applications Figure 11.35 Menu structure for configuring custom applications Pointer Pointerc Pointerb 11.16 Configuring mA outputs Figure 11.37 Menu structure for configuring mA outputs mAoutputs Otherparameters 100% Pointer Filter 11.17 Configuring other parameters Figure 11.38 Menu structure for configuring other parameters mAoutputs Otherparameters Security What the Other parameters option does Passwords and security Chapter 11 Configuring by using the menus Page 11.36 Figure 11.40 Where to enter passwords mAoutp uts From Configure option on Main Menu Chapter 11 Configuring by using the menus Page 11.37 11.18 Configuring Multiview Figure 11.42 A typical Multiview display Specificgr avity Energy mAoutputs Configuring Multiview Dual Channel Gas Signal Converter Operating Manual Page i MolecularWeight SG M =* Page 12. Routine operation 12.1 What this chapter tells you 12.2 Viewing the data Chapter 12 Routine operation Linedensity Main Menu Level 3 menusLevel 2 menus (Selection name) Stdvol flow r ate Energy flow rate Volume f low rate Grossflow rate (Value) Main Menu Menu structure: Temperature, pressure and energy Limits Linepressure Level 2 menus Main Menu Level 3 menus Customapplication Healthch eck Level2menus Propane n-Butane Main Menu Level 3 menus Customapplication Healthcheck Level 2 menus DPvalue Level 3 menus Menu structure: Health check Part 2 Liveinputs Helium n-Decane Main Menu Menu structure: Password, time, software version and unit ID Time Softwarev ersion Tagnumber 12.3 Security and passwords 12.4 How you can edit displayed information V a b c d Location ID: 0235 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 12.11 Printed reports Figure 12.2 Defining lists and printing reports Location17 Location20 Location19 How to print a report Some typical reports Page 13. Routine maintenance and fault finding Chapter 13 Routine maintenance and fault-finding Page 13.2 PROBLEM: Chapter 13 Routine maintenance and fault-finding Page 13.3 PROBLEM: Figure 12.2: Fault-finding chart 2: The display is blank Page 14. Removal and replacement of parts 14.1 Front Panel Assembly Front Panel Assembly 14.2 Display 14.3 Switch Panel 14.4 Processor Board 14.5 Power supply board 14.6 Connector Board 14.7 Fuse 14.8 Back-up battery 14.9 Rear Panel Assembly 14.10 Mother Board Page 15.1 15. Assembly drawing and parts list 15.1 What the drawing and parts list tell you 15.2 How to obtain spare parts Page Page 15.3 Page Page A.1 Appendix A Glossary A B C Page A.2 D Page A.3 E F Page A.4 H I J K Page A.5 L M Page A.6 P R Q Page A.7 S T Page A.8 U V W Page Page Wiring schedule Page Appendix C Technical data for the 7951 Page C.1 Appendix C Technical data for the 7951 C.1 What this Appendix contains C.2 Ordering information C.3 External connections C.4 Maximum number of external connections C.5 Specification General Inputs Outputs Communications Hardware facilities Power Supplies Appendix C Technical data for the 7951 Page C.10 C.6 Connections C.6.1 7951 D-type Rear Panel Pin PL1 SK1 SK2 SK3 SK4 SK5 SK6 SK7 SK8 C.6.2 7951 Klippon Rear Panel C.6 Earthing Page Page Page Page Page D.1 Appendix D Units and conversion factors Page Appendix E Data tables Page E.1 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 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 Velocity of Sound in Liquids Page E.2. Equations used to derive data tables Density/temperature relationship () Tangent thermal expansion coefficient Product compressibility () Appendix F Calculations and theory F.1 The VOS effect on density measurements = Periodic time of density transducer output signal (in s) () Appendix F Calculations and theory Page F.3 Table F.1: 'K' Coefficient Look-up Values Using: () () Page Micro Motion 7951 Signal Converter Operating Manual HB511020, Rev. A November 2007