Endress+Hauser NXA820 Operating Instructions Manual
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Endress+Hauser NXA820 Operating Instructions Manual

Endress+Hauser NXA820 Operating Instructions Manual

Tank scanner nxa820, data concentrator nxa821, host link nxa822
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BA00426G/00/EN/15.17
71361436
Valid as of software version:
02.00.00
Products
Operating Instructions
Tankvision
Tank Scanner NXA820, Data
Concentrator NXA821, Host Link
NXA822
System Description
Solutions
Services

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Summary of Contents for Endress+Hauser NXA820

  • Page 1 Products Solutions Services BA00426G/00/EN/15.17 71361436 Valid as of software version: 02.00.00 Operating Instructions Tankvision Tank Scanner NXA820, Data Concentrator NXA821, Host Link NXA822 System Description...

  • Page 2: Table Of Contents

    Nameplate ....... . . 8 Tank Scanner NXA820 ..... . . 9 Data Concentrator NXA821 .

  • Page 3: Document Information

    Furthermore during operation time of the system all servicing personnel in need of detailed knowledge about the system capabilites. This manual is not suitable for the Interface only version of NXA820. Version history Document version...

  • Page 4: Documentation

    Safe area (non-hazardous area) A0011188 Documentation 1.4.1 Operating instructions Document number Instrument Type of Document BA00339G/00 Description of Instrument Functions • Tank Scanner NXA820 BA00340G/00 Installation Instructions • Data Concentrator NXA821 BA00424G/00 System Description • Host Link NXA822 BA00426G/00 Operator Manual BA01137G/00...

  • Page 5: Basic Safety Instructions

    IT security measures in line with operators' security standards and designed to provide additional protection for the device and device data transfer must be implemented by the operators themselves. Endress+Hauser can be contacted to provide support in performing this task. Designated use 2.3.1 Application Tankvision is a dedicated tank inventory management system.

  • Page 6: Workplace Safety

    The device complies with the applicable standards and regulations as listed in the EC declaration of conformity and thus complies with the statutory requirements of the EG directives. Endress+Hauser confirms the successful testing of the device by affixing to it the CE mark.

  • Page 7: Application

    Application areas • Tank farms in refineries • Ship loading terminals • Marketing and distribution terminals • Pipeline terminals • Logistic terminals for tanks storing products like crude oils, refined white and black products, chemicals, LPGs, fuels, biofuels, alcohols Endress+Hauser...

  • Page 8: Identifying The Components

    L00-NXA82xxx-18-00-00-yy-001 Order code according to the product structure Serial number Supply voltage Type of fieldbus communication (only for Tank Scanner NXA820) Degree of protection Admissible ambient temperature MAC address of the System LAN port MAC address of the Sync Link LAN port...

  • Page 9: Tank Scanner Nxa820

    (Modbus EIA485, Sakura V1, Whessoe WM550). • The measured values are transmitted by the network and visualized on HTML pages. • The Tank Scanner NXA820 can be used stand-alone for small tank farms, but also be integrated into a large system for use in refineries.

  • Page 10: Data Concentrator Nxa821

    • Alarms and events from all connected Tank Scanners NXA820 can be shown in a common screen. Any tank of the system can be assigned to any tank group, regardless of the Tank Scanner it is linked to.
  • Page 11 Tankvision Identifying the components 4.3.2 Product picture L00-NXA8xxxx-10-08-06-xx-003 Endress+Hauser...

  • Page 12: Host Link Nxa822

    Identifying the components Tankvision Host Link NXA822 • The Host Link NXA822 collects data from all Tank Scanners NXA820 on a network and transfers them to the host system. • The MODBUS option supports serial EIA-232(RS) and EIA-485(RS) or MODBUS TCP/IP.

  • Page 13: Explosion Picture

    Housing Tankvision OPC Server • The OPC Server is a Windows program installed on a PC connecting to NXA820 and allows access to measured and calculated tank parameters. • The OPC Server connects to OPC clients on the same PC or other PCs via LAN.

  • Page 14: Tankvision Alarm Agent

    • The Alarm Pop-Up-Agent is a Windows program installed on a PC, connecting to NXA820/NXA821. • The program is running in the background and scans for alarms generated in NXA820/ NXA821. • If an alarm is present, a pop-up window opens displaying the alarm.

  • Page 15: Pc Recommendations

    PC recommendations PC connection for viewing data Tankvision Tank Scanner NXA820, Tankvision Data Concentrator NXA821 and Tankvision Host Link NXA822 are providing a web server to view and enter data or perform configurations. Viewing the pages requires a web browser and JAVA runtime installed on a PC and the Tankvision components must be connected within the same Local Area Network (LAN) consisting out of Ethernet lines, switches and/or routers.

  • Page 16: Connections To Gauges And Host

    6.1.1 Communication variants Field instruments or other slave devices are connected to the Tankvision Tank Scanner NXA820. The unit is available in 3 communication versions. • Modbus RTU RS485 According to "Modbus over serial line specification and implementation guide V1.02"...
  • Page 17 – Liquid level – Interface level – Spot density – Density profile Proservo NMS5/7 is beside others available with Modbus RTU RS485, Sakura V1, Whessoe WM550 output. For more information see TI00452G/08/EN. • Tank Side Monitor NRF590 Endress+Hauser...
  • Page 18 HART® communication. For accurate inventory measurement, it is best suited connected to Endress+Hauser’s Proservo NMS, Micropilot NMR or Tank Side Monitor NRF with level tank gauge (e.g. Micropilot). For more information see TI00049G/08/EN.
  • Page 19 The Deltabar S differential pressure transmitter is used for the following measuring tasks: – Flow measurement (volume or mass flow) in conjunction with primary devices in gases, vaporss and liquids – Level, volume or mass measurement in liquids – Differential pressure monitoring, e.g. of filters and pumps Endress+Hauser...
  • Page 20 BA00339G/00/EN. Examples for such devices are HART to Modbus converters, PLCs or other protocol converters e.g. Gauge Emulator by MHT. Remote service access via the Endress+Hauser device configuration tool FieldCare is supported for the following device combination: • Tankvision Tank Scanner with Modbus or Sakura V1 communication •...

  • Page 21: Host Systems Communication

    See "Host Link NXA822", → ä 12. For available parameters see A.1 Parameter list. 6.2.3 Connection to Tankvision Professional To connect to Tankvision Professional a dedicated communication is available. In this case measured data are transferred as the calculations are performed in Tankvision Professional. Endress+Hauser...

  • Page 22: Examples

    System architecture OPC Server Several Printer FieldCare Printer for W+M reports Operator 1 Browser NXA822 NXA821 Operator 2 Host Link Data Concentrator Browser NXA820 NXA820 Operator 3 Browser Modbus RTU RS232/485, Modbus TCP Ethernet Switch NXA820 NXA820 NXA820 NXA820 NXA820 NXA820...

  • Page 23: Screen Examples In Browser

    Tankvision Examples Screen examples in Browser Tabular view Tank tabular view NXA82x_Tank_General-Details-Tab Tank details Endress+Hauser...
  • Page 24 Examples Tankvision Trend Trend view Endress+Hauser...

  • Page 25: Calculations

    Product Code Net Standard Weight Obs-Ref calculation Obs. density & Ref. Density density Reference Density Obs. temp. conversion Calculation Hydrom. corr. Liquid Mass/ NSW in VacuumAir Net weight in Air Air corr. Air density Calculation calc. NSW in air L00-NXA82xxx-16-00-00-xx-034 Endress+Hauser...
  • Page 26 GB standards are the Chinese national standards issued by the Standardization Administration of China (SAC), the Chinese National Committee of the ISO and IEC. GB stand for Guobiao, Chinese for national standard. Mandatory standards are prefixed "GB". Recommended standards are prefixed "GB/T". A standard number follows "GB" or "GB/T". Endress+Hauser...
  • Page 27 In some cases the tank can also contain water. It can derive from the delivered crude oil, the processing or by tank breathing. The (innage) water level information together with a Water Tank Capacity Table (W-TCT) result in the Free Water Volume. It is substracted from the TOV. Endress+Hauser...
  • Page 28 However, in a certain range of product level, the floating roof can be pertially landed. This zone is called "critical zone". In the Tankvision system there can be two critical zones related to the position of the floating roof legs. L00-NXA82xxx-16-00-00-xx-039 Endress+Hauser...
  • Page 29 Volume of the Sump and Pipes are added. 8.1.6 Gross Observed Volume - GOV Subtract Free Water Volume CTSh Apply CTSh Floating Roof Correct for Floating Roof Weight corrections Sump/Pipe Add Sump/Pipe Volume volume ´ ± GOV = (TOV - FWV) CTSh FRA + SPV L00-NXA82xxx-16-00-00-xx-041 Endress+Hauser...
  • Page 30 – Different measurement units (kg/m³ vs. °API, °C vs. °F, etc.) – Different "Reference" or standard temperature (60 °F, vs. 15 °C, 25 °C or 30 °C) – Each table has range limits – Tables for VCF and for density correction are available Endress+Hauser...
  • Page 31 Most tables have so called Product Codes: • A = for generalized crude’s • B = for refined products • C = for chemicals • D = for lube oils • E = liquefied gases For chemicals normally a "polynomial equation" is used. Endress+Hauser...
  • Page 32 L00-NXA82xxx-16-00-00-xx-051 With the TCF method the p can be calculated with p / VCF (when manual p provided) and an actual p can be calculated with p x VCF, when p is known and no actual p is available. Endress+Hauser...
  • Page 33 The correct table for the product must be chosen.Together with the Product temperature and reference density the VCF can be calculated. In addition to the VCF the observed density can be calculated. 8.1.8 Gross Standard Volume - GSV L00-NXA82xxx-16-00-00-xx-048 The Gross Standard Volume is calculated by applying the VCF to the GOV. Endress+Hauser...
  • Page 34 Where the sediment and water fraction (SWF) is: SWF = 1 - (100 - S&W%) / 100 = S&W%/100 L00-NXA82xxx-16-00-00-xx-058 8.1.10 Net Standard Volume - NSV S&W S&W S&WV calculation Net Standard Weight calculation L00-NXA82xxx-16-00-00-xx-056 Substracting the SWV from the GSV result in Net Standard Volume. Endress+Hauser...
  • Page 35 • HYC = Hydrometer correction • A = Thermal expansion coeff. for glass • t = Temperature of sample • T = Calibration temperature of glass hydrometer 15 °C 0.000 0230 0 0.000 000 020 60 °F 0.000 0127 8 0.000 000 062 Endress+Hauser...
  • Page 36 Table & Product Code L00-NXA82xxx-16-00-00-xx-110 NXA820 offers various possibilities to enter and further process density information: Manual entry of Reference density (from laboratory) Manual entry of Observed density with the according sample temperature (from laboratory) is required corrected for the hydrometer. With the above information and the according Product information and ASTM/IP table (for density correction) the reference density can be calculated.
  • Page 37 8000 Table 56 1.22 1.22 8100 Table 57 (short Yes≈ 1.2194 1.2194 8393.437 tons) Table 57 (long tons) Yes 1.224 1.224 8135.8 Simplified Custom 1.225 1.225 8553 The Net Standard Weight in Air is in some countries called Mass. Endress+Hauser...

  • Page 38: Gbt Calculation Flow Chart

    Steel Expa. coef Insulation Type FRA Volume FRA Mass(G) Sump/Pipe (Ref. Density - 1.1 Volume Ref. Density « Table 60 A.B.D » Calculate VCF** Product Temp S&W CSW** S&W Calculation** Ref. Density (Ref. Density - 1.1 NSW/Product Mass/Total Mass L00-NXA82xxx-16-00-00-xx-033 Endress+Hauser...
  • Page 39 VSP Table L00-NXA82xxx-16-00-00-xx-094 The VSP is determined with the level information and the static pressure correction table (VSP-table). The VSP is the volume the tank expands at the actual level if it would be filled with water (wet calibration). Endress+Hauser...
  • Page 40 In some cases the tank can also contain water. It can derive from the delivered crude oil, the processing or by tank breating. The (innage) water level information together with a Water Tank Capacity Table (W-TCT) result in the Free Water Volume. It is subtracted from the TOV. Endress+Hauser...
  • Page 41 GOV is calculated like follows: • Starting from the TOV • Subtract FWV • Multiply ba the thermal expansion correction factor • Subtract the floating roof adjustment volume and • Add the Sump/pipe volume FWV** CTSh** FRA Volume Sump/Pipe Volume L00-NXA82xxx-16-00-00-xx-101 Endress+Hauser...
  • Page 42 SWF = 1 - (100 - S&W%) / 100 = S&W%/100 L00-NXA82xxx-16-00-00-xx-058 8.2.12 Net Standard Volume - NSV CSW** L00-NXA82xxx-16-00-00-xx-104 Net Standard Volume is calculated like follows: • Starting from GOV • Multiply by the Volume Correction Factor and • Multiply by the S&W correction factor Endress+Hauser...
  • Page 43 Net Standard Weight in air - NWA (Ref. Density - 1.1 L00-NXA82xxx-16-00-00-xx-106 The Net Standard Weight in Air is calculated by multiplying the NSV with the Reference Density reduced by the influence of the Air buoyancy (Reference density - 1.1). Endress+Hauser...

  • Page 44: Mass Measurement

    • Density is only measured at the between the two pressure sensors. • Difficult to verify, commission and calibrate P - P P - P P - P L00-HTGSxxx-05-00-00-xx-001_ The middle or P transmitter is unique to Hydrostatic Tank Gauging. Endress+Hauser...
  • Page 45 (top) pressure is identified as P and the hydrostatic (bottom) pressure is identified as P Advantage of HTMS • Accurate level measurement • Continuous density measurement • Excellent mass and volume measurements P 1 - P 3 D obs = L - Z L00-HTGSxxx-05-00-00-xx-002 Endress+Hauser...
  • Page 46 • Hydrostatic pressure of a product column – with aid of stationary measuring instrument of hydrostatic pressure. • The product level – with aid of portable or other means of level measurement. Endress+Hauser...
  • Page 47 – TOV – TOV – FWV – (TOV – FWV)*CtSh, with CtSh is Tank Shell Correction factor – (TOV – FWV)*CtSh +FRA – GOV = Gross Observed Volume – NSV Endress+Hauser...
  • Page 48 The selection when to use the HTG method to calculate the mass is placed in the product settings in the sub section Mass & Weight. In the Liquid Mass (Mass in Vacuum) Calculation Method dropdown menu you can find an entry called HTG Mode. NXA82x_Mass-Weight Endress+Hauser...

  • Page 49: Calculations For Liquefied Gases

    • It is not possible to use the M, B & R method for other Reference Temperatures than 15 °C. Method is based on 10 steps: Measure and input the data VCF Calculation Observed Density calculation Calculate GSV Calculate Liquid Mass Calculate Vapor Volume Calculate Vapor Density Calculate Vapor Mass Calculate Total Mass 10. Calculate Total Weight Endress+Hauser...
  • Page 50 • Liquid Mass = G.S.V. x Density at 15 °C (60 °F) MBR - Calculate Vapor Volume (6) The vapor volume is obtained using the total tank volume and the liquid total observed volume: • Vapor volume = Total Tank Volume - TOV Endress+Hauser...
  • Page 51 • The vapor mass (VM) can now be calculated: MV = Vapor Space x VapDens • Calculate Total Mass: Total Mass = Liquid Mass + Vapor Mass • Equivalent Vapor Liquid Volume EVLV = Vapor Mass / Liq. Ref. Density Endress+Hauser...

  • Page 52: Ctsh

    The temperature effects also the tank capacity via the tank shell diameter. With the changed diameter, the surface area is changed, and as result the tank can contain more or less liquid product depending on wheter the tank shell temperature is higher or respectively lower than the tank shell calibration temperature. Endress+Hauser...
  • Page 53 The equation for vertical cylindrical tanks for the volumetric CTSh is relative easy: CTSh 1 + 2 * * T + L00-NXA82xxx-16-00-00-xx-004 Where: • α = Linear thermal expansion coefficient of tank shell material • δT = Tank Shell Temperature - Tank Calibration temperature Endress+Hauser...
  • Page 54 Temperature correction for Horizontal Cylindrical Tanks is calculated using the following equation: CTSh 1 + * T * f‘‘ L00-NXA82xxx-16-00-00-xx-010 Where: • f’’ = non-dimension factor representing change in partial volume, corresponding with h/r2 The factor f’’ can be calculated with: Endress+Hauser...
  • Page 55 F‘‘ 1 + 2 * ( - sin ) / ( - sin * cos ) L00-NXA82xxx-16-00-00-xx-011 Where: • h = liquid depth • r = vessel radius • θ = angle subtended by liquid surface at the centre of the circular cross-section Refer to Appendix A3 for values of f’’. Endress+Hauser...
  • Page 56 Please also make sure that the exponent value is considered when entering the value in Tankvision. For example if "α " is set to be equal to "1.6 10^-5", while as engineering units shown is "10E- 7/°C", the "α " value to be entered is "160". Endress+Hauser...

  • Page 57: Alcohol Calculations

    • Proservo NMS53x – as above Other methods may also possible be possible, depending on installed equipment and used field protocol. Please consult Endress+Hauser. Later we will also see that there is a special setting in Tankvision where we can disable fail propagation if the ambient temperature doesn’t work.
  • Page 58 • Table XIIA and XIIB: Calculates volume using alcohol strength by mass (Table XIIA) or alcohol strength by volume (Table XIIB) Currently Table I, II, IIIA, IVA, VI and VII are implemented in Tankvision NXA820. Alc. Strength Product Level Temperature...

  • Page 59: Jis Calculation Flow Charts

    Calib. Temp. Calculate FRA Product temp. GOV = TOV Observed dens. Calculate density/ Ref. density Calculate GSV /TCV Calculate NSW (+WCF) Vapour Volume. Vapour press. Calculate NSV = GSV Vapour mass Vapour mass & Vapour density Vapour temp. JIS_calculation_flow-chart Endress+Hauser...
  • Page 60 ρ (F / × FRW × JIS_FRA_Shin-Nihon-1 • (JIS) Shin Nihon 2: FRA = ((1 / ρ (1 / × FRW × JIS_FRA_Shin-Nihon-2 • (JIS) Shin Nihon 3: FRA = 0 JIS_FRA_No-FRA Where: • FRW = Floating Roof Weight Endress+Hauser...
  • Page 61 Nippon kaiji GSV = (TOV * VCF) - JIS method == Shin Nihon 1 JIS method == GSV = TOV * VCF Shin Nihon 3 no (Shin Nihon 2) no (Shin Nihon 2) GSV = (TOV * VCF) - JIS_GSV-calculation Endress+Hauser...
  • Page 62 Calculations Tankvision This selection influences also the GOV (Gross Observed Volume) calculation: FRA method == GOV =TOV - FRA Shin nihon 3 GOV = TOV JIS_GOV-calculation Endress+Hauser...
  • Page 63 If the product type is not Asphalt, CTSh is not calculated. CTSh uses the following formula: To calculate CF, CF = 1 + 3 × × (T - T ) α JIS_CTSh_CF Where: • α = Thermal expansion coefficient • T = Measured temperature (°C) • T = Calibration temperature (15 °C) Endress+Hauser...

  • Page 64: Annex A.1

    Floating Roof Correction F_ROOF_ADJUS ROOF_CORRECTION Calculated Floating Roof Position F_ROOF_POS ROOF_POS N.A. Calculated Tank Shell Correction TNK_SHELL_CORR TSHELL_CORR_FACT N.A. Calculated Factor Gross Standard Volume GROSS_STD_VOL Calculated Net Standard Volume NET_STD_VOL Calculated Product Mass P_MASS MASS_IN_LIQ Calculated Total Mass TOT_MASS TOT_MASS Calculated Endress+Hauser...
  • Page 65 TEMP_POS_1, TEMP_POS_1 1660 Measured Temperature Position 2 TEMP_POS_2, TEMP_POS_2 1661 Measured Temperature Position 3 TEMP_POS_3, TEMP_POS_3 1662 Measured Temperature Position 4 TEMP_POS_4, TEMP_POS_4 1663 Measured Temperature Position 5 TEMP_POS_5, TEMP_POS_5 1664 Measured Temperature Position 6 TEMP_POS_6, TEMP_POS_6 1665 Measured Endress+Hauser...
  • Page 66 General Purpose Regis- GP03 GP03 2603 N.A. Measured ter 03 General Purpose Regis- GP04 GP04 2604 N.A. Measured ter 04 General Purpose Regis- GP05 GP05 2605 N.A. Measured ter 05 General Purpose Regis- GP06 GP06 2606 N.A. Measured ter 06 Endress+Hauser...
  • Page 67 Density Element 7 DENS_7 DENS_7 3007 kg/m Measured Density Element 8 DENS_8 DENS_8 3008 kg/m Measured Density Element 9 DENS_9 DENS_9 3009 kg/m Measured Density Element 10 DENS_10 DENS_10 3010 kg/m Measured Density Element 11 DENS_11 DENS_11 3011 kg/m Measured Endress+Hauser...
  • Page 68 Measured Density Element 48 DENS_48 DENS_48 3048 kg/m Measured Density Element 49 DENS_49 DENS_49 3049 kg/m Measured Density Element 50 DENS_50 DENS_50 3050 kg/m Measured Density Position 01 DENS_POS_1 DENS_POS_1 3051 Measured Density Position 02 DENS_POS_2 DENS_POS_2 3052 Measured Endress+Hauser...
  • Page 69 DENS_POS_38 DENS_POS_38 3088 Measured Density Position 39 DENS_POS_39 DENS_POS_39 3089 Measured Density Position 40 DENS_POS_40 DENS_POS_40 3090 Measured Density Position 41 DENS_POS_41 DENS_POS_41 3091 Measured Density Position 42 DENS_POS_42 DENS_POS_42 3092 Measured Density Position 43 DENS_POS_43 DENS_POS_43 3093 Measured Endress+Hauser...
  • Page 70 DENS_POS_45 DENS_POS_45 3095 Measured Density Position 46 DENS_POS_46 DENS_POS_46 3096 Measured Density Position 47 DENS_POS_47 DENS_POS_47 3097 Measured Density Position 48 DENS_POS_48 DENS_POS_48 3098 Measured Density Position 49 DENS_POS_49 DENS_POS_49 3099 Measured Density Position 50 DENS_POS_50 DENS_POS_50 3100 Measured Endress+Hauser...

  • Page 71: Annex A.2

    Ts = Ifw * Tp + (1 - Ifw) * Ta TS = * Tp + * Ta * Tp + * Ta Recommended Ifw = (.825) Ifw = 1.0 Ifw = 1.0 Ifw = 1.0 Ifw = 1.0 Ifw = Insulation Factor (IFw) L00-NXA82xxx-16-00-00-xx-014 Endress+Hauser...
  • Page 72 0.73 1.948 1.945 0.34 1.293 1.632 0.74 1.974 1.958 0.35 1.304 1.637 0.75 2.000 1.972 0.36 1.316 1.642 0.76 2.027 1.986 0.37 1.327 1.648 0.77 2.055 2.001 0.38 1.339 1.653 0.78 2.083 2.017 0.39 1.351 1.658 0.79 2.113 2.033 Endress+Hauser...

  • Page 73: Documentation

    For custody trans- fer and inventory control applications with NMi and PTB approvals TI00042G/08/EN Prothermo NMT539 Intrinsically safe multi-signal converter with precision average temperature and water bottom sensor for inventory control and custody transfer applications Endress+Hauser...
  • Page 74 TI00401F/00/EN Liquicap M FMI51, FMI52 For continuous measurement in liquids Document Instrument Description BA00340G/00/EN Tankvision Tank Scanner NXA820, Data Concentrator NXA821, Host Link NXA822 BA00339G/00/EN Tankvision Tank Scanner NXA820, Data Concentrator NXA821, Host Link NXA822 BA00424G/00/EN Tankvision Tank Scanner NXA820, Data Concentrator NXA821,...

  • Page 75: Index

    Free Water Volume - FWV..... 27, 40 Tank Scanner NXA820......9 Tank Shell Correction - CTSh .
  • Page 76 71361436 www.addresses.endress.com...

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