进口核子秤 低辐射核子秤小感量核子秤广州瑞发公司供应高质量进口核子秤、核子皮带秤。包括通用核子秤、低辐射核子秤、小感量核子秤。进口核子秤其精度和稳定性均表现十分优越。同时提供相似的国产核子秤，品质好，价格低。核子秤其主要原理特点用英文介绍如下：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核子秤优点Whentheintensityoftheradiationafterithaspassedthematerialonthebeltismeasuredbyonlyonedetectorthemeasuringresultisresponsbleforallthemassbetweensourceanddetector.Unfortunatellythissignalisalsodependingonotherinfluencingfactslikedistanceofasinglelumbtothedetectororsource.Ifacertainloadingisdistributedindifferentwaysi.e.theprofilchanges,thesignalwillchangeinspiteofthesameloading.Forconventionalradiometricweigherstheaccuracyisdependingonchangesofprofil.ADDITIONALADVANTAGES核子秤其他优点Themulti-detectorprincipleenablestocustomizethemeasuringpathasnecessary.Whetheritisabucketconveyororaconveyorscrew-theframeandthedetectorscanbeadjustedastooptimzethemeasurementandmanywayswithouteffortandadditionalcosts.TheRGI-beltweighermeasuresthematerialonthebeltandtheprofilwithnormally5detectors.Whenachangeoftheprofilcausesadifferentsignalinonedetectoritmustdefinitellycausealsoachangeinanotheronewhentheloadingstayesthesame.The5signalscommingfromallthedetectorstogethershowthecorrectresultoftheloading.TheRGImulti-detectorprincipledeterminesthemassindependetlyontheprofilchanges.Ifitisimpossibletofitastraighttraversebetweentheupperandthelowerstrandthedetectorswillbeassembledaccordingtotheshapeofthebelt.Forascrewconveyorthedetectorsarefittednearlyonacirclesothatthewholematerialfitsinthebeam.TECHNICALDATA核子秤技术参数EvaluationComputerMACON4-linealpha-numericaldisplayIP65foilkeyboardcalibrationviaRS232andlaptopcurrentoutputs0/4-20mAforRS232outputforhostcomputer2potentialfreerelaiscontactspowersupplyfordetectorpowerconnection230/115VAC,24VDCorACMultidetectorsystemMS5/405NaJ/Tlcrystaldetectorselectronicallystabelized0.1%for0-45 Ccrystallsize40x40mmpowersupplyMACONmountedinonedusttighthousingweightapprox.18kg Measuringframesteelframeplasticcoatedwithleadshieldingandintergratedshutterfittedtotheconveyorweightapprox.75kg注：最新出的核子秤产品也可以用长条形的闪烁体射线探测器代替分立的闪烁体射线探测器，甚至可以用弯曲的核子秤专用闪烁探测器。核子秤探测器的发展，给小感量核子秤和低辐射核子秤的发展带来了关键技术。