Mu magawo aukadaulo a ma ultrasound flowmeters, kulondola kowerenga ndi kulondola kwakukulu ndi mfundo ziwiri zazikulu zomwe zimafotokoza kulondola kwa muyeso, ndi matanthauzo osiyana, zochitika zogwiritsidwa ntchito, ndi zinthu zomwe zimakhudza. Nayi kufotokozera mwatsatanetsatane:
1. Kuwerenga Molondola
Tanthauzo
Kulondola kwa kuwerenga kumatanthauza cholakwika pakati pa mtengo woyezedwa wa flowmeter ndi kuchuluka kwenikweni kwa flow, komwe kumafotokozedwa ngati peresenti ya mtengo weniweni woyezedwa. Fomula yake yowerengera ndi iyi:
Cholakwika = ± (a% × Mtengo weniweni woyezedwa + Kupatuka kosasinthika)
Kumene
Cholakwika = ± (a% × Mtengo weniweni woyezedwa + Kupatuka kosasinthika)
Kumene
a%ndi kuchuluka kwa kulondola kwa kuwerenga, ndipo kupotoka kokhazikika nthawi zambiri kumakhala phindu lolipirira kuchuluka kwa kuyenda kochepa (monga, ±0.01 m³/h).Makhalidwe
- Cholakwika chimagwirizana ndi kuchuluka kwa madzi omwe akuyenda: Kuchuluka kwa madzi omwe akuyenda, kulakwitsa kovomerezeka kumakhala kwakukulu; kuchepa kwa madzi omwe akuyenda, kulakwitsa kovomerezeka kumakhala kochepa.
- Zikugwirizana kwambiri ndi zochitika zenizeni zogwiritsidwa ntchito: Pazochitika zomwe zimakhala ndi kusinthasintha kwakukulu kwa kayendedwe ka madzi (monga mapaipi amafakitale komwe kayendedwe ka madzi kamasiyana kuyambira kotsika mpaka kokwera), kulondola kwa kuwerenga kumawonetsa bwino kulondola kwa muyeso.
- Chitsanzo: Ngati flowmeter ili ndi kulondola kwa kuwerenga kwa ±1%, pamene liwiro lenileni la kuyenda ndi 100 m³/h, cholakwika chololedwa cha mtengo woyesedwa ndi ±1 m³/h (mwachitsanzo, 99–101 m³/h); pamene liwiro lenileni la kuyenda ndi 10 m³/h, cholakwika chololedwa ndi ±0.1 m³/h (mwachitsanzo, 9.9–10.1 m³/h).
2. Kulondola Kwambiri
Tanthauzo
Kulondola kwa sikelo yonse kumatanthauza cholakwika pakati pa mtengo woyezedwa wa flowmeter ndi kuchuluka kwenikweni kwa flowmeter, komwe kumafotokozedwa ngati peresenti ya flowmeter yonse. Fomula yake yowerengera ndi iyi:
Cholakwika = ± (b% × Mtengo wonse + Kupatuka kosasinthika)
Kumene
Cholakwika = ± (b% × Mtengo wonse + Kupatuka kosasinthika)
Kumene
b%ndi kuchuluka kwa kulondola kwa sikelo yonse, ndipo mtengo wa sikelo yonse ndi kuchuluka kwa madzi komwe mita ingathe kuyeza (monga, 1000 m³/h).Makhalidwe
- Cholakwika chimakhazikika poyerekeza ndi kuchuluka kwa milingo yonse: Mosasamala kanthu za kuchuluka kwa mayendedwe enieni, kuchuluka kwa zolakwika kumatsimikiziridwa ndi mtengo wa milingo yonse, popanda mtengo weniweni woyesedwa.
- Zolakwika zomwe zingakhale zazikulu pamlingo wochepa wa kuyenda kwa madzi: Ngati liwiro lenileni la kuyenda kwa madzi lili lotsika kwambiri kuposa lonse, cholakwika choyerekeza chimawonjezeka kwambiri.
- Chitsanzo: Ngati flowmeter ili ndi sikelo yonse ya 1000 m³/h ndi kulondola kwa ±1%, cholakwika chovomerezeka ndi ±10 m³/h kaya kuchuluka kwa madzi ndi 1000 m³/h kapena 100 m³/h. Pankhaniyi, pamene kuchuluka kwa madzi ndi 100 m³/h, cholakwikacho chikhoza kufika ±10%, chokwera kwambiri kuposa momwe kuwerenga kulili kolondola.
3. Kusiyana Kwakukulu ndi Zochitika Zogwiritsira Ntchito
| Kuyerekeza Kukula | Kuwerenga Molondola | Kulondola Kwambiri |
|---|---|---|
| Chizindikiro cha Zolakwika | Peresenti ya mtengo weniweni woyezedwa | Peresenti ya mtengo wonse |
| Kugwira Ntchito Kochepa | Zolakwika zazing'ono, kulondola kwambiri | Zolakwika zazikulu, kulondola kochepa |
| Zochitika Zogwiritsira Ntchito | Zochitika zomwe zimakhala ndi kusinthasintha kwakukulu kwa kayendedwe ka madzi kapena kufunikira kwakukulu kwa kulondola kochepa kwa kayendedwe ka madzi (monga, kupereka madzi m'matauni, kuyeza mphamvu) | Zochitika zokhala ndi kayendedwe kokhazikika pafupi ndi kukula konse (monga mapaipi okhazikika a mafakitale) |
| Ubwino | Zimasonyeza bwino zosowa zenizeni zenizeni | Ndi yosavuta kugwiritsa ntchito, mwina mtengo wake ndi wotsika |
4. Chidule
- Kulondola kwa kuwerenga kumawonetsa bwino luso lenileni la flowmeter pamlingo wonse, makamaka yoyenera zochitika zomwe zili ndi kusiyana kwakukulu kwa flowmeter. Ndi chizindikiro chofunikira cha flowmeters yolondola kwambiri.
- Kulondola kwakukulu kumagwira ntchito bwino ngati kuyenda kuli pafupi ndi kukula konse koma kungakhale ndi zolakwika zazikulu pakuyenda kochepa, zomwe nthawi zambiri zimagwiritsidwa ntchito m'malo omwe ali ndi zofunikira zochepa kapena kuyenda kokhazikika.
Mukasankha flowmeter ya ultrasound, perekani patsogolo zipangizo zomwe zatchulidwa molondola powerenga (makamaka m'malo omwe kuchuluka kwa madzi kumakhala kochepa) kutengera kuchuluka kwa madzi omwe akuyenda, zofunikira zenizeni, ndi zochitika zogwiritsidwa ntchito kuti zitsimikizire kuti muyeso ndi wolondola.
Nthawi yotumizira: Julayi-22-2025