I.IntroductionHydrogenistheonlygasexistinginliquidaluminiumlargely,whicheasilyresultsindamageofaluminiumsuchaspinholeandcanhighlyreducemechanicalpropertyandinternalqualityofcasting,soweneedqualitativelyandquantitativelymakesurethehydrogencontentinaluminiumliquidbeforepouringtoguaranteequalifiedcasting.GDQY-01canqualitativelymeasurethehydrogencontentinaluminiumliquidbyusingStraube-PfeifferTestMethod(VacuumGasInspection).II.Usage1.Itcanbeusedtocontrolthequalityduringproductionofaluminiumandaluminiumalloyandevaluatedegassingeffect,qualityofmoltenaluminiumandmeltingprocess.2.It'ssuitableforon-site***eltinginspection,especiallyforfrontofholdingfurnacescastingandaluminiumprocessingsites.aracteristics1.themobilestructureisconvenienttomeasuregascontentinaluminiumliquidatdifferentfixedpositi***.2.Theanalysingspeedissofastthatitcanfinishtheworkin5minutesinfoundryworkshop.3.Thetestresultisreliable,andtherepeatabilityisprehendingdifferenttestmethodsincludingsolidificationstatemethod,sectionalviewobservationanddensitytestmethod,itcanaccuratelydeterminethealuminiumliquidqualityandguidetheproductionreliably.4.It'ssturdyandeconomical.Thereisn'tvulnerablepart,sotheprocessingcostislow.5.It'seasytooperateandsafetouse,sotheoperatordonotneedmuchexperienceandcanoperatethemachinewellaftersometraining.6.Thevacuumchamberdoesn'tuseglassbellprover,whichwillnotbedamaged.7.It'ssuitableforbothfrontfurnacecomplicatedsituationandlaboratory.)