Diffusion flow test yog los ntawm qhov tshwm sim. Ntawd yog, thaum lub npuas taw tes nyob rau hauv qee qhov siab, qhov sib txawv ntawm ob sab ntawm lim membrane vim huab cua los yog nitrogen thawb cov kua hla lub qhov ntawm lub lim membrane. Ntawm qhov me me lim, diffusion flux qeeb heev kom nws tsis tuaj yeem ntsuas. Txawm li cas los xij, raws li cov lim loj loj, diffusion flow yog ib qho tseem ceeb heev thiab rhiab heev rau kev sim.
Thaum lub lim cartridge ntub lawm, qee qhov ntim thiab siab ntawm huab cua nyob rau sab saum toj ntawm lim yuav raug cais tawm. Thaum lub siab ntawm input cua yog kwv yees rau tus nqi ntawm npuas point, ib tug loj npaum li cas ntawm cov pa roj tseem tsis tau hla lub qhov.
Rau qhov tshwj xeeb diffusion flow ntsuas, 80 feem pua lossis li ntawm tus nqi npuas taw tes yog feem ntau pom zoo raws li tus nqi pib siab ntawm diffusion flow ntsuas, thiab lub teeb liab rau qhov diffusion flow value nyob rau hauv seem yog ib qho amplified, calibrated thiab converted siab attenuation teeb liab. thiab muaj peev xwm ntawm rhiab xav txog kev ncaj ncees ntawm cov pa roj-kua theem ntawm ob sab ntawm lub pore ntawm lub lim membrane. Nyob rau hauv cov xwm txheej uas qhov inflection point tsis tuaj yeem pom tau yooj yim yog tias tsis pom qhov tsis pom tseeb ntawm qhov ntsuas qhov ntsuas thaum ntxov, daim ntawv thov ntawm diffusion flow method yog pov thawj tias muaj kev ntseeg siab piv nrog rau lwm txoj hauv kev tshwj xeeb rau kev ntsuas PES lossis lwm yam asymmetric membrane lim.