Kwiiparameter zobugcisa zee-ultrasonic flowmeters, ukuchaneka kokufunda kunye nokuchaneka ngokupheleleyo ziingcamango ezimbini eziphambili ezichaza ukuchaneka kokulinganisa, kunye neenkcazo ezahlukeneyo, iimeko zokusetyenziswa, kunye nezinto ezinefuthe. Nantsi ingcaciso eneenkcukacha:
1. Ukuchaneka Kokufunda
Inkcazo
Ukuchaneka kokufunda kubhekisa kwimpazamo phakathi kwexabiso elilinganisiweyo le-flowmeter kunye nesantya sokuhamba kokwenyani, esichazwa njengepesenti yexabiso elilinganisiweyo lokwenyani. Ifomula yayo yokubala yile:
Impazamo = ± (a% × Ixabiso elilinganisiweyo lokwenyani + Ukuphambuka okuzinzileyo)
Phi
Impazamo = ± (a% × Ixabiso elilinganisiweyo lokwenyani + Ukuphambuka okuzinzileyo)
Phi
a%yipesenti yokuchaneka kokufunda, kwaye ukuphambuka okusisigxina kudla ngokuba yixabiso lokuhlawula amazinga okuhamba aphantsi (umz., ±0.01 m³/h).Iimpawu
- Impazamo ihambelana nesantya sokuhamba komoya sokwenyani: Okukhona isantya sokuhamba komoya sikhulu, kokukhona impazamo epheleleyo evumelekileyo ikhulu; okukhona isantya sokuhamba komoya sincinci, kokukhona impazamo epheleleyo evumelekileyo incinci.
- Ihambelana ngakumbi neemeko zokusetyenziswa kwehlabathi lokwenyani: Kwiimeko ezinokuguquguquka okukhulu kokuhamba kwamanzi (umz., imibhobho yemizi-mveliso apho ukuhamba kwamanzi kunokwahluka ukusuka kokuphantsi ukuya kokuphezulu), ukuchaneka kokufunda kubonisa ngcono ukuchaneka kokulinganisa.
- Umzekelo: Ukuba i-flowmeter inomlinganiselo wokufunda ochanekileyo we-±1%, xa isantya sokuhamba sokwenyani siyi-100 m³/h, impazamo evumelekileyo yexabiso elilinganisiweyo yi-±1 m³/h (oko kukuthi, 99–101 m³/h); xa isantya sokuhamba sokwenyani siyi-10 m³/h, impazamo evumelekileyo yi-±0.1 m³/h (oko kukuthi, 9.9–10.1 m³/h).
2. Ukuchaneka Okupheleleyo
Inkcazo
Ukuchaneka kwesikali esipheleleyo kubhekisa kwimpazamo phakathi kwexabiso elilinganisiweyo le-flowmeter kunye nesantya sokuhamba kokwenyani, esichazwa njengepesenti yoluhlu olupheleleyo lwe-flowmeter. Ifomula yayo yokubala yile:
Impazamo = ± (b% × Ixabiso elipheleleyo + Ukuphambuka okuzinzileyo)
Phi
Impazamo = ± (b% × Ixabiso elipheleleyo + Ukuphambuka okuzinzileyo)
Phi
b%yipesenti yokuchaneka kwesikali esipheleleyo, kwaye ixabiso lesikali esipheleleyo lizinga eliphezulu lokuhamba kwamanzi elinokulinganiselwa yimitha (umz., i-1000 m³/h).Iimpawu
- Impazamo ilungisiwe xa kuthelekiswa noluhlu olupheleleyo: Nokuba isantya sokuhamba kombane sinjani na, uluhlu lwempazamo lumiselwa lixabiso elipheleleyo, ngaphandle kwexabiso elilinganisiweyo lokwenyani.
- Iimpazamo ezinokuba nkulu kwizinga lokuhamba kwamanzi eliphantsi: Ukuba izinga lokuhamba kwamanzi liphantsi kakhulu kunezinga elipheleleyo, impazamo ehambelanayo iyanda kakhulu.
- Umzekelo: Ukuba i-flowmeter inesikali esipheleleyo se-1000 m³/h kunye nokuchaneka kwe-±1%, impazamo epheleleyo evumelekileyo yi-±10 m³/h nokuba izinga lokuhamba lokwenyani liyi-1000 m³/h okanye i-100 m³/h. Kwimeko enjalo, xa izinga lokuhamba lokwenyani liyi-100 m³/h, impazamo ehambelanayo ingafikelela kwi-±10%, ephezulu kakhulu kunendlela yokusebenza yokuchaneka kokufunda.
3. Umahluko oPhambili kunye neMiba yoSetyenziso
| Umlinganiselo wokuthelekisa | Ukuchaneka Kokufunda | Ukuchaneka Okupheleleyo |
|---|---|---|
| Isalathiso seMpazamo | Ipesenti yexabiso elilinganisiweyo lokwenyani | Ipesenti yexabiso elipheleleyo |
| Ukusebenza okuPhantsi koMzila | Iimpazamo ezincinci, ukuchaneka okuphezulu | Iimpazamo ezinkulu, ukuchaneka okuphantsi |
| Imizekelo yesicelo | Imeko apho ukuhamba kwamanzi kutshintshatshintsha okanye imfuno ephezulu yokuchaneka kokuhamba kwamanzi okuphantsi (umz., ukunikezelwa kwamanzi kamasipala, ukulinganiswa kwamandla) | Imeko ezinomsinga ozinzileyo kufutshane nomlinganiselo opheleleyo (umz., imibhobho yemizi-mveliso ezinzileyo) |
| Iingenelo | Ibonisa ngcono iimfuno zokuchaneka kwehlabathi lokwenyani | Kulula kakhulu ukuyisebenzisa, kwaye iindleko ezinokuthi ziphantsi |
4. Isishwankathelo
- Ukuchaneka kokufunda kubonakalisa ngcono amandla okulinganisa okwenyani e-flowmeter kulo lonke uluhlu, ngakumbi afanelekileyo kwiimeko ezinotshintsho olukhulu lokuhamba kwamanzi. Luphawu oluphambili lwe-flowmeters ezichanekileyo kakhulu.
- Ukuchaneka kwesikali esipheleleyo kusebenza kakuhle xa ukuhamba kwamanzi kusondele kwisikali esipheleleyo kodwa kunokuba neempazamo ezinkulu kwizinga lokuhamba kwamanzi eliphantsi, elihlala lisetyenziswa kwiimeko ezineemfuno ezichanekileyo okanye ukuhamba kwamanzi okuzinzileyo.
Xa ukhetha i-ultrasonic flowmeter, beka phambili izixhobo ezichazwe ngokuchanekileyo kokufunda (ingakumbi kwiimeko apho amazinga okuhamba aphantsi aqhelekile) ngokusekelwe kumanqanaba okuhamba kokwenyani, iimfuno zokuchaneka, kunye neemeko zokusetyenziswa ukuqinisekisa ukuchaneka kokulinganisa.
Ixesha leposi: Julayi-22-2025