進口核子秤 低輻射核子秤小感量核子秤廣州瑞發公司供應高質量進口核子秤、核子皮帶秤。包括通用核子秤、低輻射核子秤、小感量核子秤。進口核子秤其精度和穩定性均表現十分優越。同時提供相似的國產核子秤，品質好，價格低。核子秤其主要原理特點用英文介紹如下：CONTINUOUSCONTACTLESSWEIGHINGAcontinuousweighingsystemisexpectedtodeterminethemassperunitoftimerunningoveraconveyor.Thisvaluemustbeintegratedtogetbiggertimeintervallsorthemasslimitedtoacertainvalue.Thenormalwaytogetthissignalisagravimetriconebymeasuringtheweightcarriedbytherollersoftheconveyor.Toachieveacorrectsignalapartofthebeltmustbemovabletothedirectionofthegravity.Witharadiometricweigherthemassisnotdeterminedbyitsweightbutbyitsabsorptionofelectromagneticwaves.Thisresultsinacontactlessmeasurementwhichisnotdependingonamovementandthereforeithasnottobeclean.RADIOMETRICWEIGHING核子秤原理Howdoesaradiometricbeltweigherwork?ThewaywhyanX-rayphotographcanshowaboneinalegisbecauseofthehigherdensityofbonescomparedwithmuscles.Ifthepictureshowagrayscaleitispossibletodeterminetheexactdensitydistributionoftheleg.Thebonesandalsobiggerlegshaveahigherabsorptionthenthinnerones.ThesamewayanX-rayphotographofaconveyorbeltshowsthebiggerloadingandthedensitydistrubutionoftheloading. Withthismeasurednotbyapicturebutbyasensitiveradiationdetectorthemasscanbedeterminedinkg/m.Themeasureoftheabsorptionisthebulkdensityandthelengthofthepathinthemateriali.e.thehightofloading.Thissignalmultipliedwiththespeedgivesthetonnageperhour.THEADVANTAGEOFTHERGI-PRINCIPLERGI核子秤優點Whentheintensityoftheradiationafterithaspassedthematerialonthebeltismeasuredbyonlyonedetectorthemeasuringresultisresponsbleforallthemassbetweensourceanddetector.Unfortunatellythissignalisalsodependingonotherinfluencingfactslikedistanceofasinglelumbtothedetectororsource.Ifacertainloadingisdistributedindifferentwaysi.e.theprofilchanges,thesignalwillchangeinspiteofthesameloading.Forconventionalradiometricweigherstheaccuracyisdependingonchangesofprofil.ADDITIONALADVANTAGES核子秤其他優點Themulti-detectorprincipleenablestocustomizethemeasuringpathasnecessary.Whetheritisabucketconveyororaconveyorscrew-theframeandthedetectorscanbeadjustedastooptimzethemeasurementandmanywayswithouteffortandadditionalcosts.TheRGI-beltweighermeasuresthematerialonthebeltandtheprofilwithnormally5detectors.Whenachangeoftheprofilcausesadifferentsignalinonedetectoritmustdefinitellycausealsoachangeinanotheronewhentheloadingstayesthesame.The5signalscommingfromallthedetectorstogethershowthecorrectresultoftheloading.TheRGImulti-detectorprincipledeterminesthemassindependetlyontheprofilchanges.Ifitisimpossibletofitastraighttraversebetweentheupperandthelowerstrandthedetectorswillbeassembledaccordingtotheshapeofthebelt.Forascrewconveyorthedetectorsarefittednearlyonacirclesothatthewholematerialfitsinthebeam.TECHNICALDATA核子秤技術參數EvaluationComputerMACON4-linealpha-numericaldisplayIP65foilkeyboardcalibrationviaRS232andlaptopcurrentoutputs0/4-20mAforRS232outputforhostcomputer2potentialfreerelaiscontactspowersupplyfordetectorpowerconnection230/115VAC,24VDCorACMultidetectorsystemMS5/405NaJ/Tlcrystaldetectorselectronicallystabelized0.1%for0-45 Ccrystallsize40x40mmpowersupplyMACONmountedinonedusttighthousingweightapprox.18kg Measuringframesteelframeplasticcoatedwithleadshieldingandintergratedshutterfittedtotheconveyorweightapprox.75kg注：最新出的核子秤產品也可以用長條形的閃爍體射線探測器代替分立的閃爍體射線探測器，甚至可以用彎曲的核子秤專用閃爍探測器。核子秤探測器的發展，給小感量核子秤和低輻射核子秤的發展帶來了關鍵技術。