application 143 en - krohne...krohne 5/2010-143-subject to change without notice. 3. krohne solution...
TRANSCRIPT
Tank farm for solvents at a road building materials manufacturer
•Continuousmonitoringofcurrenttankinventory•2-wireconnectiontechnology•Maintenance-free,non-contactlevelmeasurement
1. Background ASwisscustomeroperatesatankfarmforsolventsrequiredintheproductionofroadbuildingmaterials.Inthepast,measuringdevicesbasedonmechanicalmeasuringprincipleswereusedtomeasurethelevelsinthetanks.Theywereextremelyinaccurateandrequiredsignificantmaintenance.
Theendproductsare•standardised,specialbindingagentsforroadsurfacescontainingbitumen,•bitumenemulsionsforrepairingandbuildingroads,•specialemulsionsforsurfacerecyclingandslurrysurfacing.•bindersforthesurfacetreatmentaswellas•specialproductstoprotect,repairandreconstructingroadsurfaces.
2. Measurement requirements
Radarlevelmeasuringdevicesweretheonlyoptionwhenitcametoupgradingthetankfarmasultrasonicdevicesarenotsuitedtothepropertiesoftheproducts.Non-contactmeasurementwasalsoanimportantrequirementforusingradarmeasuringdevices.Onefurtherrequirementwasthetwo-wireconnectiontechnologyusedtokeepwiringcoststoaminimum.Aspecialmeasuringprinciplewasrequiredforthelowerchamberofone2-chambertank.Thislevelmeasurementnowtakesplaceusingabypassmeasuringdevicewhichalsomeetstherequirementsoutlinedabove.Themeasuringdevicesmustbeeasytoconfigureusingcommunicationtechnologyfromonemeasuringstationandtheymustsupporttheremoteretrievalofmeasuredvalues.
APPLICATION NOTE Chemicals
Bypass measurement on a 2-chamber tank
Application 143 EN.indd 1 05.05.2010 15:32:07 Uhr
©KROHNE5/2010-14
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3. KROHNE Solution
KROHNEsupplied7OPTIWAVE7300CradarlevelmeasuringdevicesandoneBM26Wradarbypassmeasuringdevice.
AlldevicesfunctionbasedontheFMCWradarmeasuringprinciple.
ThePACTwareandDTMsincludedasstandardmakeitpossibletoconfigureandrecordthemeasuredvaluesofthelevelmeasuringdevicesfromthemeasuringstation.
4. Customer advantages
Fromthemeasuringstationitisnowpossibletocontinuouslymonitorthecurrentinventory.Assoonasthepresetmaximumlimithasbeenreachedwhenfillingthetank,thepumpsareswitchedoff.Thiseliminatestheneedfortime-consumingon-sitemonitoring.Oncethepresetminimumlevelhasbeenreached,newsuppliescanbeordered.Thebypasssolutionforthe2-chambertankwiththeBM26WfunctionsasreliablyastheKROHNEOPTIWAVE7300CFMCWradarmeasuringdevicesinstalledonthetanks.
Themeasuringdeviceshavealreadyproventhemselvesinpracticeandareworkingsmoothly.
5. Products used
OPTIWAVE 7300 C • Precisemeasurementindifficultconditions–evenintankswithagitatedsurfaces,foamorinternalobjects
• Producttemperatureupto200°Candoperatingpressureupto40bar• Measuringrangeupto80m• PACTwareandDTMsarepartofthestandardscopeofdelivery• Standardmeasurementdeviation≤±3mm• 2-wireconnectiontechnology,minimalwiringexpense• Maintenancefree
BW 26 W• Precisemeasurementindifficultconditions• Producttemperatureupto300°Candoperatingpressureupto120bar• Measuringrange0.5to6m• PACTwareandDTMsarepartofthestandardscopeofdelivery
Contact
PleasevisitourwebsiteforacurrentlistofallKROHNEcontactsandaddresses.
APPLICATION NOTE
Installation on top of tanks
OPTIWAVE 7300 C
BM 26 W
Application 143 EN.indd 2 05.05.2010 15:32:15 Uhr