Nheyo yekushanda kwenguva yekufambisa
Nheyo Yekuyera:
Mutemo weTransit-time Correlation Principle unoratidza kuti nguva yekubhururuka kwechiratidzo cheultrasonic inokanganiswa nekumhanya kwemvura inoyerera. Kufanana nemunhu anoshambira achifamba achiyambuka rwizi runoyerera, chiratidzo cheultrasonic chinofamba zvishoma nezvishoma kumusoro kupfuura pasi.
YeduTF1100 ultrasonic flow metresshandai zvinoenderana nepfungwa iyi yekufamba kwenguva:
Vf = Kdt/TL
Kupi:
VcFlow kumhanya
K: Nguva dzose
dt: Musiyano munguva yekubhururuka
TL: Nguva yekufamba netsoka
Kana flow meter ichishanda, ma transducer maviri aya anotumira uye anogamuchira masaini e ultrasonic anowedzerwa ne multi beam iyo inotanga yaenda pasi yozoenda kumusoro. Nekuti ruzha rwe ultra runofamba nekukurumidza pasi kupfuura kumusoro, pachava nemusiyano wenguva yekubhururuka (dt). Kana flow ichiripo, musiyano wenguva (dt) hausi zero. Saka, chero bedzi tichiziva nguva yekubhururuka pasi nekumusoro, tinogona kuwana musiyano wenguva, uye ipapo flow velocity (Vf) kuburikidza nefomura inotevera.
Nzira yeV
Nzira yeW
Nzira yeZ
Nheyo yekushandisa Doppler
IyoDF6100flowmeter yemutsara inoshanda nekutumira ruzha rwe ultrasonic kubva ku transducer yayo inotumira, ruzha rucharatidzwa nema sonic reflectors anobatsira akasungirirwa mukati memvura uye akarekodhwa ne receiver transducer. Kana ma sonic reflectors ari kufamba mukati menzira yekutumira ruzha, mafungu eruzha acharatidzwa pa frequency yakachinjwa (Doppler frequency) kubva pa transmission frequency. Kuchinja kwe frequency kuchave kwakanangana nekumhanya kwe moving particle kana bubble. Kuchinja uku kwe frequency kunodudzirwa nemudziyo uye kunoshandurwa kuita mayuniti akasiyana-siyana ekuyera anotsanangurwa nemushandisi.
Panofanira kunge paine zvimwe zvidimbu zvakakura zvakakwana kuti zvikonzere kuratidzwa kwenguva refu - zvidimbu zvakakura kupfuura 100 micron.
Kana muchiisa ma transducers, nzvimbo yekuisa inofanira kunge ine urefu hwakakwana hwepombi dzakatwasuka kumusoro nepasi. Kazhinji, pombi yepamusoro inoda 10D uye pombi yepasi inoda 5D yakatwasuka, uko D iri dhayamita yepombi.
Nheyo yekushanda kwekukurumidza kwenzvimbo
DOF6000Iyo series open channel flow meter inoshandisa Continuous Mode Doppler kuona kumhanya kwemvura, chiratidzo che ultrasonic chinotumirwa mumvura uye manzwi (reflections) anodzoserwa kubva muzvidimbu zvakasungirirwa mumvura anogamuchirwa uye anoongororwa kuti abudise Doppler shift (velocity). Kutumirwa kwacho kunoramba kuripo uye panguva imwe chete nekugamuchira chiratidzo kunodzoserwa.
Munguva yekuyera Ultraflow QSD 6537 inoburitsa chiratidzo chinoenderera mberi uye inoyera zviratidzo zvinodzoka kubva kune vanoparadzira chero kupi uye kwese kwese padivi pedanda. Izvi zvinogadziriswa kusvika paavhareji yekumhanya inogona kuenderana nekumhanya kwekuyerera kwechiteshi panzvimbo dzakakodzera.
Chinogamuchira chiri muchishandiso chinoona zviratidzo zvinoratidzwa uye zviratidzo izvozvo zvinoongororwa uchishandisa matekiniki ekugadzirisa zviratidzo zvedhijitari.
Kuyera Kudzika Kwemvura - Ultrasonic
Pakuyera Kudzika kwemvura, Ultraflow QSD 6537 inoshandisa Time-of-Flight (ToF) Ranging. Izvi zvinosanganisira kutumira kuputika kwechiratidzo che ultrasonic kumusoro pamusoro pemvura uye kuyera nguva inotorwa kuti echo ibve pamusoro pemvura inogamuchirwa nechishandiso. Kureba (kudzika kwemvura) kunoenderana nenguva yekufambisa uye kumhanya kweruzha mumvura (yakagadziriswa kuti ione tembiricha uye huwandu).
Kuyera kudzika kwe ultrasonic kwakanyanya kunogumira pa 5m.
Kuyera Kudzika Kwemvura - Kumanikidzwa
Nzvimbo dzine mvura ine marara akawanda kana mabubble emhepo dzinogona kunge dzisina kukodzera kuyerwa kwehudzamu hwe ultrasound. Nzvimbo idzi dzakakodzera kushandisa kumanikidzwa kuona hudzamu hwemvura.
Kuyera hudzamu hwakavakirwa pakumanikidzwa kunogonawo kushandiswa kunzvimbo dzisina mudziyo wacho pasi penzira yekuyerera kana kuti dzisingakwanise kuiswa dzakatwasuka.
Ultraflow QSD 6537 ine sensor yekumanikidza ine mitsetse miviri. Sensor iyi iri pasi pechishandiso uye inoshandisa chinhu chedigital chinoona kumanikidzwa kwemhepo chinodzorwa nekupisa.
Kana ma sensor ekudzika kwesimba anoshandiswa, shanduko yekumanikidzwa kwemumhepo inokonzera zvikanganiso muhudzamu hwakaratidzwa. Izvi zvinogadziriswa nekubvisa kumanikidzwa kwemumhepo kubva mukumanikidzwa kwesimba kwakayerwa. Barometric pressure sensor inodiwa kuti iite izvi. Module yekubhadharisa kumanikidzwa yakavakwa muCalculator DOF6000 iyo inozobva yagadzirisa otomatiki kuchinjika kwekumanikidzwa kwemumhepo ichivimbisa kuti kuyerwa kwesimba kwakarurama kwaitwa. Izvi zvinogonesa Ultraflow QSD 6537 kuti inyore kudzika kwemvura chaiko (kumanikidzwa) pachinzvimbo chekumanikidzwa kwesimba pamwe nemusoro wemvura.
Tembiricha
Sensor yekupisa yemamiriro akasimba inoshandiswa kuyera tembiricha yemvura. Kumhanya kweruzha mumvura uye kufambisa kwayo mvura zvinokanganiswa netembiricha. Chishandiso ichi chinoshandisa tembiricha yakayerwa kuti chigadzirise otomatiki shanduko iyi.
Kufambisa Kwemagetsi (EC)
Ultraflow QSD 6537 ine simba rekuyera conductivity yemvura. Magadzirirwo emagetsi mana anoshandiswa kuyera. Kamhepo kadiki kanopfuudzwa mumvura uye voltage inogadzirwa nekamhepo aka inoyerwa. Chishandiso ichi chinoshandisa mavalues aya kuverenga conductivity isina kugadziriswa.