Kumapharamitha obuchwepheshe bamamitha okugeleza e-ultrasonic, ukunemba kokufunda kanye nokunemba okugcwele kuyimiqondo emibili eyinhloko echaza ukunemba kokulinganisa, enezincazelo ezihlukile, izimo zokusetshenziswa, kanye nezici ezithonyayo. Nansi incazelo eningiliziwe:
1. Ukunemba Kokufunda
Incazelo
Ukunemba kokufunda kubhekisela ephutheni phakathi kwenani elilinganisiwe le-flowmeter kanye nesilinganiso sangempela sokugeleza, esivezwa njengephesenti yenani langempela elilinganisiwe. Ifomula yayo yokubala ithi:
Iphutha = ± (a% × Inani langempela elilinganisiwe + Ukuphambuka okugxilile)
Kuphi
Iphutha = ± (a% × Inani langempela elilinganisiwe + Ukuphambuka okugxilile)
Kuphi
a%iphesenti lokunemba kokufunda, futhi ukuphambuka okuhleliwe ngokuvamile kuyinani lesinxephezelo samazinga okugeleza aphansi (isb., ±0.01 m³/h).Izici
- Iphutha lihambisana nesilinganiso sangempela sokugeleza: Uma izinga lokugeleza likhulu, iphutha eliphelele elivumelekile liba likhulu; uma izinga lokugeleza lincane, iphutha eliphelele elivumelekile liba lincane.
- Kuhambisana kakhulu nezimo zokusetshenziswa komhlaba wangempela: Ezimweni ezinokuguquguquka okukhulu kokugeleza (isb., amapayipi ezimboni lapho ukugeleza kungahluka kusuka kokuphansi kuya kokuphezulu), ukunemba kokufunda kukhombisa kangcono ukunemba kokulinganisa.
- Isibonelo: Uma i-flowmeter inokunemba kokufunda okungu-±1%, lapho izinga lokugeleza langempela lingu-100 m³/h, iphutha elivumelekile lenani elilinganisiwe lingu-±1 m³/h (okungukuthi, 99–101 m³/h); lapho izinga lokugeleza langempela lingu-10 m³/h, iphutha elivumelekile lingu-±0.1 m³/h (okungukuthi, 9.9–10.1 m³/h).
2. Ukunemba Okugcwele
Incazelo
Ukunemba kwesikali esigcwele kubhekisela ephutheni phakathi kwenani elilinganisiwe le-flowmeter kanye nesilinganiso sangempela sokugeleza, esivezwa njengephesenti lobubanzi besikali esigcwele se-flowmeter. Ifomula yayo yokubala ithi:
Iphutha = ± (b% × Inani lesikali esigcwele + Ukuphambuka okulungisiwe)
Kuphi
Iphutha = ± (b% × Inani lesikali esigcwele + Ukuphambuka okulungisiwe)
Kuphi
b%iphesenti lokunemba kwesikali esigcwele, kanti inani lesikali esigcwele liyisilinganiso sokugeleza esiphezulu esingalinganiswa yimitha (isb., 1000 m³/h).Izici
- Iphutha lilungisiwe uma liqhathaniswa nobubanzi besilinganiso esigcwele: Kungakhathaliseki ukuthi izinga lokugeleza langempela liyini, ububanzi bephutha bunqunywa yinani lesilinganiso esigcwele, ngaphandle kwenani langempela elilinganisiwe.
- Amaphutha angaba makhulu ngesilinganiso sokugeleza esiphansi: Uma izinga lokugeleza langempela liphansi kakhulu kunesilinganiso esigcwele, iphutha elihlobene landa kakhulu.
- Isibonelo: Uma i-flowmeter inesilinganiso esigcwele esingu-1000 m³/h kanye nokunemba okungu-±1%, iphutha eliphelele elivumelekile lingu-±10 m³/h kungakhathaliseki ukuthi izinga langempela lokugeleza lingu-1000 m³/h noma lingu-100 m³/h. Kulesi simo, lapho izinga langempela lokugeleza lingu-100 m³/h, iphutha elihlobene lingafinyelela ku-±10%, eliphakeme kakhulu kunokusebenza kokunemba kokufunda.
3. Umehluko Oyinhloko Nezimo Zokusetshenziswa
| Ubukhulu bokuqhathanisa | Ukunemba Kokufunda | Ukunemba Okugcwele |
|---|---|---|
| Ireferensi Yephutha | Amaphesenti enani langempela elilinganisiwe | Amaphesenti enani eliphelele |
| Ukusebenza Okuphansi Kokuhamba Kokuhamba | Amaphutha amancane, ukunemba okuphezulu okuhlobene | Amaphutha amakhulu, ukunemba okuphansi |
| Izimo Zohlelo Lokusebenza | Izimo ezinokuguquguquka okukhulu kokugeleza noma isidingo esikhulu sokunemba kokugeleza okuphansi (isb., ukuhlinzekwa kwamanzi kamasipala, ukulinganisa amandla) | Izimo ezinokugeleza okuzinzile eduze kwesikali esigcwele (isb., amapayipi ezimboni aqinile) |
| Izinzuzo | Kungcono kubonisa izidingo zokunemba zomhlaba wangempela | Kulula kakhulu ukuyisebenzisa, izindleko ezingase zibe phansi |
4. Isifinyezo
- Ukunemba kokufunda kubonisa kangcono ikhono lokulinganisa langempela le-flowmeter kulo lonke uhla, ikakhulukazi elifanele izimo ezinokwehluka okukhulu kokugeleza. Kuyinkomba ebalulekile yama-flowmeter anembe kakhulu.
- Ukunemba okugcwele kusebenza kahle uma ukugeleza kuseduze nokugcwele kodwa kungaba namaphutha amakhulu ngesivinini sokugeleza esiphansi, ngokuvamile kusetshenziswa ezimweni ezinezidingo eziphansi zokunemba noma ukugeleza okuzinzile.
Uma ukhetha i-ultrasonic flowmeter, beka phambili amadivayisi acacisiwe ngokunemba kokufunda (ikakhulukazi ezimweni lapho amazinga okugeleza aphansi evame khona) ngokusekelwe ebangeni langempela lokugeleza, izidingo zokunemba, kanye nezimo zokusetshenziswa ukuqinisekisa ukunemba kokulinganisa.
Isikhathi sokuthunyelwe: Julayi-22-2025