Emerson Rosemount 3818 Programming manual

Rosemount™ 3818 LNG Liquid Ultrasonic
Meter
for Cryogenic Liquefied Natural Gas Applications
Maintenance and Troubleshooting Manual
00809-0100-3818, Rev AA
April 2022

Safety and approval information
This Rosemount product complies with all applicable European directives when properly installed in accordance with the
instructions in this manual. Refer to the EU declaration of conformity for directives that apply to this product. The EU declaration
of conformity, with all applicable European directives, and the complete ATEX Installation Drawings and Instructions are available
on the internet at www.emerson.com or through your local Emerson support center.
Information affixed to equipment that complies with the Pressure Equipment Directive, can be found on the internet at http://
www.emerson.com.
For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.
Other information
Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the user manual.
Product data sheets and manuals are available from the Emerson website at http://www.emerson.com.
Return policy
Follow Emerson procedures when returning equipment. These procedures ensure legal compliance with government
transportation agencies and help provide a safe working environment for Emerson employees. Emerson will not accept your
returned equipment if you fail to follow Emerson procedures. Return procedures and forms are available on our web support site
at www.emerson.com, or by phoning the Emerson Customer Service department.
Emerson Flow customer service
Email:
•Worldwide: http://[email protected]
•Asia-Pacific: http://[email protected]
Telephone:
North and South America Europe and Middle East Asia Pacific
United States 800 522 6277 U.K. 0870 240 1978 Australia 800 158 727
Canada [phone] The Netherlands [phone] New Zealand 099 128 804
Mexico [phone] France 0800 917 901 India 800 440 1468
Argentina [phone] Germany 0800 182 5347 Pakistan 888 550 2682
Brazil [phone] Italy 8008 77334 China [phone]
Central & Eastern [phone] Japan [phone]
Russia/CIS [phone] South Korea [phone]
Egypt 0800 000 0015 Singapore [phone]
Oman 800 70101 Thailand 001 800 441 6426
Qatar 431 0044 Malaysia 800 814 008
Kuwait 663 299 01
South Africa 800 991 390
Saudi Arabia 800 844 9564
UAE 800 0444 0684

Contents
Maintenance and Troubleshooting Manual
00809-0100-3818 April 2022
Rosemount™ 3818 LNG Liquid Ultrasonic Meter i
Contents
Section 1: Routine maintenance
1.1 Meter maintenance ..................................................................................... 1
1.2 Routine Maintenance ................................................................................... 3
1.2.1 Maintenance logs and reports........................................................................... 3
Section 2: Troubleshooting
2.1 Meter status alarms ..................................................................................... 7
2.1.1 Check status ..................................................................................................... 8
2.1.2 System alarm .................................................................................................. 10
2.1.3 Chord A, Chord B, Chord C and Chord D alarm ................................................ 10
2.1.4 Field I/O alarm................................................................................................. 10
2.1.5 Validity alarm.................................................................................................. 10
2.1.6 Comms alarm ................................................................................................. 10
2.1.7 Communications ............................................................................................ 11
2.2 Troubleshooting the meter ........................................................................ 11
2.2.1 Meter maintenance......................................................................................... 19
2.2.2 Unable to connect direct serial or external serial modem ................................ 29
2.2.3 Unable to connect to meter ............................................................................ 29
2.2.4 Ethernet connections...................................................................................... 29
2.2.5 Direct serial connections................................................................................. 29
2.3 Troubleshoot Maintenance log files and trend files ....................................... 30
2.3.1 Files do not appear in workbook...................................................................... 30
2.3.2 Microsoft® Excel® Log/Export Options are not Available................................ 30
2.3.3 Maintenance Logs or Trend files are not created ............................................. 31
2.3.4 Windows® XP with Security Update ............................................................... 34

ii Contents
Maintenance and Troubleshooting ManualContents
April 2022 00809-0100-3818
Section 3: Meter maintenance
3.1 Removing the shrouds ...............................................................................38
3.1.1 Removing the band shrouds ...........................................................................39
3.2 Re-wetting the transducers .......................................................................44
3.3 Replacing the transducer assembly .............................................................51
3.4 Replacing the meter electronics..................................................................55
3.4.1 Transmitter electronics maintenance ..............................................................56
3.4.2 Replacing the CPU Module ..............................................................................57
3.4.3 Replacing the fuse...........................................................................................59
3.4.4 Replacing the Backplane .................................................................................60
3.4.5 Replacing the I.S. Barrier board........................................................................63
3.4.6 Replacing the Power Supply Board ..................................................................65
3.4.7 Replacing the Acquisition Module ...................................................................67
3.4.8 Replacing the Acquisition cable or synchronization cable ................................70
3.5 Installing the shrouds ................................................................................71
3.6 Sealing the meter ......................................................................................76
3.6.1 Sealing the transmitter electronics enclosure..................................................76
3.6.2 Sealing the Bracket/Cover and Base electronics enclosure...............................77
Appendix A: Conversion factors
A.1 Conversion factors per units of measurement................................................................... 79
A.2 K Factor conversions ......................................................................................................... 80
Appendix B: Engineering Drawings
B.1 Rosemount 3810 Series Ultrasonic Flow Meter Drawings.................................................. 81
Appendix C: Index
C.1 Manual index..................................................................................................................... 83

List of TablesMaintenance and Troubleshooting Manual
00809-0100-3818 April 2022
List of Tables iii
List of Tables
Table 2-1 Troubleshooting........................................................................................................... 12
Table 2-2 Maintenance ................................................................................................................ 21
Table 3-1 Contents-Transducer maintenance .............................................................................. 35
Table 3-2 Shroud removal tool list ............................................................................................... 39
Table 3-3 Transducer maintenance tools and shop supplies list ................................................... 45
Table 3-4 Electronics maintenance tools list ................................................................................ 55
Table 3-5 Shroud removal tool list ............................................................................................... 71
Table A-1 Conversion factors per units of measurement............................................................... 79

iv List of Tables
List of Tables Maintenance and Troubleshooting Manual
April 2022 00809-0100-3818

List of FiguresMaintenance and Troubleshooting Manual
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List of Figures v
List of Figures
Figure 1-2 Maintenance log collection parameters........................................................................ 3
Figure 1-3 Trend log collection ...................................................................................................... 4
Figure 1-4 Archive log collection parameters................................................................................. 5
Figure 2-1 Meter Monitor status alarms......................................................................................... 7
Figure 2-2 Meter Monitor (Detailed) view...................................................................................... 7
Figure 2-3 Monitor page Check status and Status Summary .......................................................... 8
Figure 2-4 Monitor page Check status and Status Summary .......................................................... 9
Figure 2-5 Meter Monitor (Summary) view ................................................................................. 19
Figure 2-6 Meter Monitor (Detailed) view ................................................................................... 20
Figure 2-7 Excel® 2000 Tools Menu ............................................................................................ 31
Figure 2-8 Excel® Trusted Access Setting .................................................................................... 32
Figure 2-9 Excel® 2007 Tools Menu ............................................................................................ 32
Figure 2-10 Excel® 2007 Developer tab - Macro Security .............................................................. 33
Figure 3-2 3818 LNG Meter top assembly ................................................................................... 38
Figure 3-3 Top shroud disassembly ............................................................................................ 40
Figure 3-4 Shroud worm screw assembly .................................................................................... 41
Figure 3-5 Clamped shroud worm screw parts ............................................................................ 42
Figure 3-6 Band shroud hem bend joint....................................................................................... 43
Figure 3-7 LT-07 transducer assembly ......................................................................................... 44
Figure 3-8 3818 meter with thermal wrap ................................................................................... 46
Figure 3-9 Transducer assembly removal..................................................................................... 47
Figure 3-10 LT-07 Transducer assembly removed from transducer housing .................................. 47
Figure 3-11 Re-wetting the LT-07 transducer face ......................................................................... 48
Figure 3-12 Re-installing the thermal wrap.................................................................................... 49
Figure 3-13 LT-07 Transducer assembly ........................................................................................ 51
Figure 3-14 LT-07 Transducer assembly removed from transducer housing .................................. 52
Figure 3-15 LT-07 transducer and transducer cable wiring............................................................. 53
Figure 3-16 3818 LNG Liquid Ultrasonic Flow Meter electronics .................................................... 56
Figure 3-17 CPU replacement ...................................................................................................... 57
Figure 3-18 Fuse holder cap .......................................................................................................... 59
Figure 3-19 Backplane board replacement .................................................................................... 61
Figure 3-20 I.S. Barrier board replacement ................................................................................... 63
Figure 3-21 Power Supply Board replacement .............................................................................. 65

vi List of Figures
List of Figures Maintenance and Troubleshooting Manual
April 2022 00809-0100-3818
Figure 3-22 Bracket/Cover plate removal.......................................................................................67
Figure 3-23 Acquisition Module cable and transducer wiring ........................................................68
Figure 3-24 Acquisition Module cable or Synchronization cable ....................................................70
Figure 3-25 Band shroud hem bend joint .......................................................................................72
Figure 3-26 Band shroud assembly ................................................................................................73
Figure 3-27 Top shroud attachment points ...................................................................................74
Figure 3-28 Top shroud assembly ..................................................................................................75
Figure 3-29 Transmitter electronics enclosure security latch .........................................................76
Figure 3-30 Base Enclosure security seals ......................................................................................77

Section 1: Routine maintenanceMaintenance and Troubleshooting Manual
00809-0100-3818 April 2022
Meter maintenance 1
11
Section 1: Routine maintenance
1.1 Meter maintenance
This section includes discussion of the maintenance of Rosemount 3818 LNG Liquid
Ultrasonic Flow Meters.
For reference, you may download the MeterLink Quick Start Manual from:
Emersonprocess.com/en-US/brands/Flow/ultrasonics/Pages/MeterLink.aspx
SURFACE TEMPERATURE HAZARD
The meter body and piping may be extremely cold.
Wear appropriate personal protective equipment when coming in contact with the meter. Failure to do so may
result in injury.
TRANSPORTATION HAZARD
When moving the meter, do not insert the forks of a forklift into the bore.
Inserting the forks may cause the meter to become unstable, resulting in injury or damage to the bore and
sealing face.
TRIPPING HAZARD
Clear all obstacles or obstructions from the work area when transporting, installing or removing the
meter.
Failure to clear the work area may cause injury to personnel.
Prior to lifting the unit, refer to the flow meter nameplate or outline dimensional (general arrangement)
drawing for the assembled weight.