Manuals / Siemens / Cell Phone / Cell Phone

Siemens LR 460 Air Purging System Optional, Air Consumption, Flow rate versus applied pressure

Models: LR 460

1 123

Download 123 pages 8.81 Kb

Page 22

Air Purging System (Optional)

For more frequent cleaning, a purging system can be installed between the flange and the horn antenna. The system provides an 1/8" inlet (female thread) on the flange where cooling air or cleaning fluid passes through the flange and exits the inside of the horn to clean it. The customer will supply the purging medium by a manual or automatic valve system.

This option is only available with the universal flange for purging shown on page 17.

Notes:

•The Air Purge feature should not be activated with a dust cap in place.

•Purge duration, pressure, and interval, will vary with each application. It is the user’s responsibility to determine the requirements depending on the application and cleaning required.

•Short duration bursts of high pressure provide more effective cleaning than continuous low pressure air.

•Some dust particles are highly abrasive and can be drawn into the inside of the horn during purge cleaning, damaging the internal PTFE emitter of the antenna. A replacement kit is available from your local Siemens Milltronics representative.

•It is the customer’s responsibility to ensure that any vacuum or pressure in the measured vessel is maintained, considering the hole that passes through the process connection and SITRANS LR 460 antenna system.

Recommendation for		Air Consumption
effective cleaning	(Flow rate versus applied pressure)
	Air Pressure		Approx. inlet volume flow rate
Pressure: 90 to 110 psi	20		5 SCFM
	40		6 SCFM
Inlet flow: 10 SCFM 1	60		8 SCFM
Inlet flow: 10 SCFM 1	80		9 SCFM
	90		10 SCFM

Installation

•The purge connection is closed by the manufacturer, using a 1/8" plug.

•When the plug is removed to connect a purging system, the operator is responsible for ensuring that the purging circuit conforms to "Ex" requirements: for example, by fitting an NRV valve.

purged process connection with factory- installed 1/8" NPT plug

1.SCFM (standard cubic feet/minute) referenced to 14.7 psia, 68°F and 36% relative humidity (RH).

Page 16

SITRANS LR 460 – INSTRUCTION MANUAL

7ML19985JM01

Image 22

Siemens LR 460 instruction manual Air Purging System Optional, Air Consumption, Flow rate versus applied pressure

Contents

Sitrans Contact Smpi Technical Publications at the following address Table of Contents Table of Cotents Quick Start Wizard via the handheld programmerIii AIFB1 AIFB2Appendix F Hart Information Structure Direct Current Safety NotesSafety marking symbols 7ML19985JM01Canadian Installations only Industry Canada IC rules FCC and IC ConformityApplication Examples ManualSupport Abbreviations and IdentificationsShort Long Form Description Units Cont’d Approvals and Certificates ProgrammingSystem Implementation Specifications SpecificationsPower PerformanceInterface Programmer infrared keypad1 MechanicalProcess EnvironmentalCommunication Approvals Dimensions Standard configurationInstallation InstallationMounting Location Nozzle location Key considerationsNozzle design Device orientationPolarization Reference Point Installation in vessel with obstructionsPolarization Reference Point Easy Aimer Installation Holding the electronics enclosure firmlyAir Consumption Air Purging System OptionalFlow rate versus applied pressure Slotted Flange Dimensions see above Pipe Flange Thick Bolt Hole No.Installation Optional Dust CapWiring Connecting Sitrans LRConnecting Hart Typical PLC/mA configuration with Hart Hart wiringAC version DC version Power Demands Profibus wiringBus 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, 1/0/6Directive 94/9/EC Annex II, clause Device Permitted ambientThermal Data for 7ML5426 Series 61241 -17 in Europe7ML19985JM01 Activating Sitrans LR RUN mode displayQuick Start Quick StartPress Mode to return to RUN mode Programming Sitrans LRLanguage Quick Start Wizard via the handheld programmerQuick Start Application Type OptionsHigh Calibration Point Operation typesUnits ValuesQuick Start Wizard via Simatic PDM Configuring a new deviceDevice Description DD Quick Start Wizard steps IdentificationRange Setup Application typeSummary Quick Start Setting Description Level application exampleAuto False Echo Suppression Operating Sitrans LR 460 via Simatic PDM Rev .0, SP2 FeaturesFunctions in Simatic PDM Echo profile saving and viewing Trend Diagram Level Trend over TimeOpen the menu View Trend to see the level trend over tme Manual TVT Shaper Open the menu Device TVT ShaperOnline Display Accessing Functions in PDMDisplay Configuring a new device Changing parameter settings via Simatic PDMDevice Description DD Configuration Flag Reset Hart only Parameters accessed via pull-down menusReset Calibrating LR 460 via PDMSimulation Digital/Analog TrimSimulate AO Analog Output Simulate Analog Input to AIFB1 or AIFB2Pull-down menus via Simatic PDM Parameter ReferenceParameter menus Device menus View menusLanguage Options Quick Start WizardOperation Slow Operation Unit ConfigurationIdentification Open the menu Device Set AddressProgram To perform a Reset via the handheld programmerDescription MerDevice HandheldProgrammer Statistics Input Calibration Low Calibration Pt. default 30.000 mSensor Calibration Sensor UnitsHigh Level Point default High Calibration Pt. default 0.350 mLow Level Point default Level Offset defaultValues Detailed SetupMeasuring Limits OptionsParameters RelatedTers ParameEcho detection position ParameEcho Sampling Window Near Range Window UsedRange Far RangeOpen 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 SuppressionDisplay before Auto False Echo Suppression Example after Auto False Echo SuppressionManual TVT shaper Manual TVT Shaper ModeTVT Hover Level To change a breakpoint via PDMAltered by Altered byValues Range 0.0000 to 99999 m / min RelatedEcho Information OutputAIFB1 Unit Target Mode Profibus PA onlyBatch Phase Filter Time ConstantUpper Value Upper Limit AlarmProcess Value Scale Output ScaleMin Out Fail-safe Mode Profibus PA onlyLimit Hysteresis Max OutSee AIFB1 the parameters for AIFB2 are identical AIFB2MA Output MA OUT value = x x 16 mA + 4 y Man ValueRelated parame Device Certification Relay ConfigurationCertificates and Approvals Related parameRemaining Device Lifetime Maintenance settingsRemaining Sensor Lifetime Service Interval Calibration IntervalParameters Principles of Operation Related Response LOE Timer Fill RateAppendix a Technical Reference Measurement ResponseEcho selection Echo ProcessingProfile monitoring via Simatic PDM Time Varying Threshold TVTBeam angle at -3dB reference False EchoesAuto False-Echo Suppression TechnicalEcho confidence Fail-safe ModeLOE Timer Near Range BlankingFail-safe value Maximum Process Temperature Chart Temperature on the LCD secondary displayTroubleshooting LR Symptom Possible cause Remedy Appendix B TroubleshootingTroubleshooting Fluctuates Reads empty Reads vessel bottom RegionSet Far Range to a lower value Is normalTroubleshooting LR 460 cont’d Symptom Possible cause Remedy General Fault Codes/PROFIBUS PA Extended Diagnostics Same Check configuration for Perform serviceOutside its temperature Has expiredEeprom corrupt Local Siemens By a memory error RepresentativeEeprom damaged Local Siemens Representative For the networkUnable to collect profile Local Siemens Representative Local Siemens Device has been lost RepresentativeModule Representative Local Siemens Distance measurement RepresentativeMaintenance Appendix C MaintenanceUnit Repair and Excluded Liability LCD Display RUN mode startup displayProgram Mode Display Local InterfaceProgramming via the handheld programmer Hand-held programmer key functions in RUN modeHandheld programmer Key FunctionIndividual Parameter Reset Hand-held programmer key functions in Navigation modeHand-held programmer key functions in Edit mode Key Name When Navigation ModeHart modem interface for Simatic PDM Hart Device Description DDSimatic Process Device Manager PDM Hart CommunicationsHart Version Burst ModeSitrans LR 460 does not support Burst Mode Hart Communication ParameterLevel Transducer Block LTB Block Model for recording and processing measured valuesProfile structure Hart F-90Description of the blocks Analog Input Function Blocks AIFB1 and AIFB2Device Description Configuration toolAppendix G Remote operation via Remote Operation PAGSD file Setting the Profibus address ConfigurationConfiguring a new device procedure Configuring Profibus PA with an S7-300/ 400 PLC Calibration via Simatic PDMCyclic Data Appendix H Communication viaCyclic versus Acyclic Data Communication PACodes for Bad Quality Status ByteStatus Codes for Good Quality H-96Diagnosis reply applies only to cyclic masters DiagnosticsAcyclic Diagnostics Status Codes for Uncertain Quality= set Acyclic Data TransmissionByte Bit Description Indication Class H-98Profibus Level Device Design Appendix J Profibus PA Profile StructureProfile structure PA Profie structure PA See parameter diagram onLevel Transducer Block function groups How the Level Transducer Block worksSensor Reference Point Analog Input Function Blocks 1 Electronics temperatureHow the AIFBs work Setting Description Output value J-104 Software rev Software DD Rev Date ChangesInitial release Sorftware rev K-106Glossary GlossaryGlossary Stilling-well see stillpipe Glossary Index IndexView Reform Echo Reliable echo indicator 85 repairQuick Start Wizard Status byteLCD menu structure Echo SEL LCD menu charts LCD menusLCD menu charts 7ml19985JM01