In line aromatisation of foam in the manufacture of confectionery

•Continuousinlinedosingofflavourandcolouringtofoambasemass•Stablecompositionoftheproduct•Highlevelofrepeatability,eveninthecaseoffluctuatingconsumption

1. BackgroundAswellaslicorice,productsmadefromfruitgum,suchasjellybabies,arefirmfavouritesinsweetshops.Dependingonthetypehowever,suchsweetseithercontainsweetfoamorevenaremadeentirelyofsweetfoam.ThisisthecasewithmanyoftheproductsfromtheMEDERERSußwarenvertriebsGmbHCompanyinFürth,whichmarketsitsproductsunderthebrandnameTrolli.Thesweetscanconsistofseverallayerswheretypically,thelowerlayerismadeoffoamandthetoponeoffruitgum.Oneexampleofthisisthewellknow"Sourapplerings"fromTrolli.

2. Measurement requirements

Tostartwith,thefreshfoamisproducedinaspecialmixmachineandthenaerated.Followingthis,thefoamisgivenitstasteandcolourthroughtheinlinedosingofadditives.Then,thefoamleavesthemachineandisformedintotherequiredshapes,e.g.bears,frogsorringsintheso-calledMogulmachine,bybeingdosedintostarchfilledmouldboards.

3. KROHNE solution

Thatthefoamgetstherequiredflavouringandcolouring,magnetic-inductiveandCoriolismassflowmetersaredeployedoneachline.AnOPTIFLUX6000DN25measuresthevolumeflowofthefresh,stilltastelessfoamasitcomesoutofthemixmachine.Atthesametime,variousadditives,namelythecolouring,citricacidandaromasaremeteredin.

APPLICATION REPORT Food & Beverage

Application 235 EN.indd 1 04.08.2010 17:48:58 Uhr

©KROHNE08/2010-235

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Withthreeofthematerialsontheotherhand,OPTIFLUX6000withsmallernominalDNdiameters(2.5and4)areusedforthemeasurement.OnematerialdoesnothavesufficientconductivityandforthatreasonismeasuredusingasmallCoriolisOPTIMASS3000deviceinDN3.

Becauseofthedifficultinstallationconditionsinthedispensingsystem,themeasurementsystemsweredeliveredasaremoteversion.Thesignalconverterswereinstalledas19"rackversionsinaseparatecabinet.TheconnectiontothecontrolsystemwasrealizedthroughaProfibusDPcommunication.

4. Customer benefits

TwosystemsofthistypewerebuiltbytheHansaIndustrieMixerCompanyandinstalledandcommissionedatMedererinFürth.Eventhoughmeasuringfoamwithahighaircontentisnoteasy,theflowmetersareworkingtothecompletesatisfactionofthecustomer.Inspiteoftheveryrestrictedspaceavailablefortheinstalltionof16measuringdevices,thesystemoffershighlevelsofrepeatabilityandaccuracy.

5. Products used

OPTIFLUX 6300 R• Electromagneticflowmeterforhygienicapplications• Separatesignalconverterforinstallationina19"rack• NominalwidthrangefromDN2.5-DN150• Vacuum-resistantliner,evenwithhightemperaturechanges

OPTIMASS 3300 R• Coriolismassflowmeterforverysmallquantities• Recordsmassflowvolumesofjustafewgramsperminute• Secondarypressurecontainmentforhighsafety

Inline metering: main flow with OPTIFLUX 6000 DN 25; the flavours are metered in through the side-mounted valves.

Measurement of the metered flavours using OPTIFLUX 6000 and OPTIMASS 3000.

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APPLICATION REPORT

Application 235 EN.indd 2 04.08.2010 17:49:03 Uhr