Echo Processing, Echo selection | Siemens LR 460 specs

A: Technical Reference

Echo Processing

Profile monitoring via SIMATIC PDM

To view an echo profile open the menu View – Profile.

echo profile

TVT curve

echo distance

You will see the echo profile, the Time Varying Threshold (TVT), and a vertical line indicating the distance from the sensor to the echo selected.

Echo strength is indicated on the Profile (dB) vertical axis. The distance shown on the horizontal axis is the distance from the sensor to the target.

Time Varying Threshold (TVT)

The TVT is a threshold curve used to detect the presence of significant echoes. See Auto False-Echo Suppression on page 73 for more detail.

Echo selection

The device considers all peaks that are above the TVT as a potential good echo.

Each peak gets a rating based on its strength, area, height above the TVT, and other parameters. The true echo is selected based on the setting for Echo Algorithm on page 54.

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SITRANS LR 460 – INSTRUCTION MANUAL

7ML19985JM01

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Contents

Sitrans Contact Smpi Technical Publications at the following address Table of Contents Table of Cotents Quick Start Wizard via the handheld programmer Iii AIFB1 AIFB2 Appendix F Hart Information Structure Direct Current Safety NotesSafety marking symbols 7ML19985JM01 Canadian Installations only Industry Canada IC rules FCC and IC Conformity Application Examples ManualSupport Abbreviations and Identifications Short Long Form Description Units Cont’d Programming Approvals and CertificatesSystem Implementation Specifications SpecificationsPower Performance Interface Programmer infrared keypad1 Mechanical Environmental ProcessCommunication Approvals Dimensions Standard configuration Installation InstallationMounting Location Nozzle location Key considerationsNozzle design Device orientation Installation in vessel with obstructions Polarization Reference PointPolarization Reference Point Easy Aimer Installation Holding the electronics enclosure firmly Air Purging System Optional Air ConsumptionFlow rate versus applied pressure Slotted Flange Dimensions see above Pipe Flange Thick Bolt Hole No. Installation Optional Dust Cap Wiring Connecting Sitrans LR Hart wiring Connecting Hart Typical PLC/mA configuration with HartAC version DC version Profibus wiring Power DemandsBus Termination AC version DC version From Connecting Sitrans LR 460 on page 19, step Product Nameplate Hazardous area installationsFor use and assembly, refer to the main instructions Reference European Atex Directive 94/9/EC, Annex II, 1/0/6 Directive 94/9/EC Annex II, clause Device Permitted ambientThermal Data for 7ML5426 Series 61241 -17 in Europe 7ML19985JM01 Activating Sitrans LR RUN mode displayQuick Start Quick Start Press Mode to return to RUN mode Programming Sitrans LR Language Quick Start Wizard via the handheld programmerQuick Start Application Type Options High Calibration Point Operation typesUnits Values Configuring a new device Quick Start Wizard via Simatic PDMDevice Description DD Quick Start Wizard steps Identification Range Setup Application type Summary Quick Start Setting Description Level application example Auto False Echo Suppression Simatic PDM Rev .0, SP2 Features Operating Sitrans LR 460 viaFunctions in Simatic PDM Trend Diagram Level Trend over Time Echo profile saving and viewingOpen the menu View Trend to see the level trend over tme Manual TVT Shaper Open the menu Device TVT Shaper Accessing Functions in PDM Online DisplayDisplay Changing parameter settings via Simatic PDM Configuring a new deviceDevice Description DD Configuration Flag Reset Hart only Parameters accessed via pull-down menusReset Calibrating LR 460 via PDM Simulation Digital/Analog TrimSimulate AO Analog Output Simulate Analog Input to AIFB1 or AIFB2 Pull-down menus via Simatic PDM Parameter ReferenceParameter menus Device menus View menus Quick Start Wizard Language OptionsOperation Slow Operation Unit ConfigurationIdentification Open the menu Device Set Address Program To perform a Reset via the handheld programmerDescription Mer Handheld DeviceProgrammer Statistics Input Calibration Low Calibration Pt. default 30.000 mSensor Calibration Sensor Units High Level Point default High Calibration Pt. default 0.350 mLow Level Point default Level Offset default Values Detailed SetupMeasuring Limits Options Parameters RelatedTers Parame Parame Echo detection positionEcho Sampling Window Near Range Window UsedRange Far Range Open the menu Device Auto False Echo Suppression TVT Auto False Echo Suppression setupTo use Auto False Echo Suppression via Simatic PDM Auto TVT Auto False Echo Suppression Display before Auto False Echo Suppression Example after Auto False Echo Suppression Manual TVT shaper Manual TVT Shaper ModeTVT Hover Level To change a breakpoint via PDM Altered by Altered byValues Range 0.0000 to 99999 m / min Related Output Echo InformationAIFB1 Unit Target Mode Profibus PA onlyBatch Phase Filter Time Constant Upper Value Upper Limit AlarmProcess Value Scale Output Scale Min Out Fail-safe Mode Profibus PA onlyLimit Hysteresis Max Out See AIFB1 the parameters for AIFB2 are identical AIFB2MA Output MA OUT value = x x 16 mA + 4 y Man Value Related parame Device Certification Relay ConfigurationCertificates and Approvals Related parame Maintenance settings Remaining Device LifetimeRemaining Sensor Lifetime Service Interval Calibration Interval Parameters Principles of Operation Related Response LOE Timer Fill RateAppendix a Technical Reference Measurement Response Echo selection Echo ProcessingProfile monitoring via Simatic PDM Time Varying Threshold TVT Beam angle at -3dB reference False EchoesAuto False-Echo Suppression Technical Echo confidence Fail-safe ModeLOE Timer Near Range Blanking Fail-safe value Maximum Process Temperature Chart Temperature on the LCD secondary display Appendix B Troubleshooting Troubleshooting LR Symptom Possible cause RemedyTroubleshooting Fluctuates Reads empty Reads vessel bottom RegionSet Far Range to a lower value Is normal Troubleshooting LR 460 cont’d Symptom Possible cause Remedy General Fault Codes/PROFIBUS PA Extended Diagnostics Same Check configuration for Perform serviceOutside its temperature Has expired Eeprom corrupt Local Siemens By a memory error RepresentativeEeprom damaged Local Siemens Representative For the network Unable to collect profile Local Siemens Representative Local Siemens Device has been lost RepresentativeModule Representative Local Siemens Distance measurement Representative Appendix C Maintenance MaintenanceUnit Repair and Excluded Liability LCD Display RUN mode startup displayProgram Mode Display Local Interface Programming via the handheld programmer Hand-held programmer key functions in RUN modeHandheld programmer Key Function Individual Parameter Reset Hand-held programmer key functions in Navigation modeHand-held programmer key functions in Edit mode Key Name When Navigation Mode Hart modem interface for Simatic PDM Hart Device Description DDSimatic Process Device Manager PDM Hart Communications Hart Version Burst ModeSitrans LR 460 does not support Burst Mode Hart Communication Parameter Level Transducer Block LTB Block Model for recording and processing measured valuesProfile structure Hart F-90 Description of the blocks Analog Input Function Blocks AIFB1 and AIFB2 Device Description Configuration toolAppendix G Remote operation via Remote Operation PA Configuration GSD file Setting the Profibus addressConfiguring a new device procedure Configuring Profibus PA with an S7-300/ 400 PLC Calibration via Simatic PDM Cyclic Data Appendix H Communication viaCyclic versus Acyclic Data Communication PA Codes for Bad Quality Status ByteStatus Codes for Good Quality H-96 Diagnosis reply applies only to cyclic masters DiagnosticsAcyclic Diagnostics Status Codes for Uncertain Quality = set Acyclic Data TransmissionByte Bit Description Indication Class H-98 Appendix J Profibus PA Profile Structure Profibus Level Device DesignProfile structure PA Profie structure PA See parameter diagram onLevel Transducer Block function groups How the Level Transducer Block works Sensor Reference Point Electronics temperature Analog Input Function Blocks 1How the AIFBs work Setting Description Output value J-104 Software DD Rev Date Changes Software revInitial release Sorftware rev K-106 Glossary Glossary Glossary Stilling-well see stillpipe Glossary Index Index View Reform Echo Reliable echo indicator 85 repairQuick Start Wizard Status byte LCD menu structure Echo SEL LCD menu charts LCD menus LCD menu charts 7ml19985JM01

Siemens LR 460 Echo Processing, Profile monitoring via Simatic PDM, Echo selection

Models: LR 460