Umgaqo wokusebenza ngexesha lokuhamba
Umgaqo woLinganiso:
Umgaqo-nkqubo woNxibelelwano lwexesha lokuHamba usebenzisa inyani yokuba ixesha lokubhabha kwesignali ye-ultrasound lichaphazeleka yisantya sokuhamba kwesixhobo sokuthwala. Njengombhukudi ohamba ngendlela yakhe enqumla umlambo oqukuqelayo, isignali ye-ultrasound ihamba kancinci phezulu kunasezantsi.
ZethuIimitha zokuhamba kwe-ultrasonic ze-TF1100sebenza ngokwale migaqo yexesha lokuhamba:
Vf = Kdt/TL
Apho:
Isantya seVcFlow
K: Ohlala ehleli
dt: Umahluko ngexesha lokubhabha
TL: Ixesha lokuThutha elinomsindo
Xa i-flow meter isebenza, ii-transducers ezimbini zithumela kwaye zifumana imiqondiso ye-ultrasonic eyandisiweyo yi-multi beam ehamba kuqala ngezantsi uze emva koko inyuke. Ngenxa yokuba isandi se-ultra sihamba ngokukhawuleza ngezantsi kunokunyuka, kuya kubakho umahluko wexesha lokubhabha (dt). Xa ukuhamba kuhleli, umahluko wexesha (dt) ngu-zero. Ke ngoko, ukuba nje siyazi ixesha lokubhabha kokubini phantsi naphezulu, singabala umahluko wexesha, size emva koko sifumane isantya sokuhamba (Vf) ngale fomyula ilandelayo.
Indlela ye-V
Indlela ye-W
Indlela ye-Z
Umgaqo wokusebenza kweDoppler
IDF6100I-flowmeter yochungechunge isebenza ngokudlulisa isandi se-ultrasonic kwi-transducer yayo edlulisa umyalezo, isandi siya kubonakaliswa zi-sonic reflectors eziluncedo ezixhonywe ngaphakathi kolwelo kwaye zirekhodwe yi-transducer efumana umyalezo. Ukuba i-sonic reflectors zihamba ngaphakathi kwendlela yokudlulisela isandi, amaza esandi aya kubonakaliswa kwi-frequency etshintshiweyo (i-Doppler frequency) ukusuka kwi-frequency edlulisiweyo. Utshintsho kwi-frequency luya kunxulumana ngokuthe ngqo nesantya se-particle okanye i-bubble ehambayo. Olu tshintsho kwi-frequency lutolikwa sisixhobo kwaye luguqulwe lube ziiyunithi ezahlukeneyo zokulinganisa ezichazwe ngumsebenzisi.
Kufuneka kubekho amasuntswana amakhulu ngokwaneleyo ukuba abangele ukubonakaliswa okude - amasuntswana amakhulu kune-100 micron.
Xa ufaka ii-transducers, indawo yokufakela kufuneka ibe nobude obaneleyo bombhobho othe tye phezulu nasezantsi. Ngokwesiqhelo, umbhobho othe tye udinga i-10D kwaye umbhobho othe tye ongezantsi udinga ubude bombhobho othe tye obuyi-5D, apho u-D bububanzi bombhobho.
Umgaqo wokusebenza kwesantya sendawo
DOF6000Imitha yokuhamba kwetshaneli evulekileyo yochungechunge isebenzisa i-Continuous Mode Doppler ukubona isantya samanzi, isignali ye-ultrasonic idluliselwa kumjelo wamanzi kwaye ii-echoes (reflections) ezibuyisiweyo kwiisuntswana ezixhonywe kumjelo wamanzi ziyafunyanwa kwaye zihlalutywe ukuze kukhutshwe i-Doppler shift (isantya). Uthumelo luyaqhubeka kwaye ngaxeshanye nokwamkelwa kwesignali ebuyiselweyo.
Ngexesha lomjikelo wokulinganisa i-Ultraflow QSD 6537 ikhupha isignali eqhubekayo kwaye ilinganisa imiqondiso ebuya kwi-scatterers naphi na naphi na ecaleni komqadi. Ezi zixazululwa kwisantya esiphakathi esinokunxulunyaniswa nesantya sokuhamba kwetshaneli kwiindawo ezifanelekileyo.
Umamkeli kwisixhobo ubona imiqondiso ebonakalisiweyo kwaye loo miqondiso ihlalutywa kusetyenziswa iindlela zokucubungula imiqondiso yedijithali.
Ukulinganiswa kobunzulu bamanzi – i-Ultrasonic
Kwimilinganiselo yoBunzulu, i-Ultraflow QSD 6537 isebenzisa iTime-of-Flight (ToF) Ranging. Oku kuquka ukuthumela ukuqhuma kwesignali ye-ultrasonic phezulu kumphezulu wamanzi kunye nokulinganisa ixesha elithatyathwe yi-echo ukusuka kumphezulu oza kwamkelwa sisixhobo. Umgama (ubunzulu bamanzi) uhambelana nexesha lokuhamba kunye nesantya sesandi emanzini (silungisiwe ngokweqondo lobushushu kunye noxinano).
Umlinganiselo wobunzulu be-ultrasonic uphezulu kakhulu kwi-5m.
Ukulinganisa Ubunzulu Bamanzi - Uxinzelelo
Iindawo apho amanzi aneenkunkuma ezininzi okanye amaqamza omoya zisenokungafaneleki ukulinganisa ubunzulu be-ultrasound. Ezi ndawo zilungele ngakumbi ukusebenzisa uxinzelelo ukumisela ubunzulu bamanzi.
Umlinganiselo wobunzulu obusekelwe kuxinzelelo unokusetyenziswa nakwiindawo apho isixhobo singenakubekwa kumgangatho wetshaneli yokuhamba okanye singenakufakelwa ngokuthe tye.
I-Ultraflow QSD 6537 ifakwe i-absolute pressure sensor ene-bar ezimbini. I-sensor ikwicala elisezantsi lesixhobo kwaye isebenzisa i-digital pressure sensing element ehlawulelwa bubushushu.
Apho kusetyenziswa khona izinzwa zoxinzelelo lobunzulu, utshintsho loxinzelelo lomoya luya kubangela iimpazamo kubunzulu obubonisiweyo. Oku kulungiswa ngokususa uxinzelelo lomoya kuxinzelelo lobunzulu olulinganisiweyo. Inzwa yoxinzelelo lwe-barometric iyafuneka ukwenza oku. Imodyuli yokuhlawula uxinzelelo yakhelwe kwiCalculator DOF6000 eya kuthi emva koko ihlawule ngokuzenzekelayo utshintsho loxinzelelo lomoya ukuqinisekisa ukuba umlinganiselo wobunzulu ochanekileyo uyafezekiswa. Oku kwenza i-Ultraflow QSD 6537 ikwazi ukunika ingxelo yobunzulu bamanzi (uxinzelelo) endaweni yoxinzelelo lwe-barometric kunye nentloko yamanzi.
Ubushushu
I-solid state temperature sensor isetyenziselwa ukulinganisa ubushushu bamanzi. Isantya sesandi emanzini kunye nokuqhuba kwawo kuchaphazeleka bubushushu. Esi sixhobo sisebenzisa ubushushu obulinganisiweyo ukuze sihlawulele ngokuzenzekelayo olu tshintsho.
Ukuqhuba koMbane (EC)
I-Ultraflow QSD 6537 ixhotyiswe ngamandla okulinganisa ukuhanjiswa kwamanzi. Ulungiselelo lwe-electrode ezine ezithe ngqo lusetyenziswa ukwenza umlinganiselo. Umsinga omncinci udlula emanzini kwaye i-voltage ephuhliswe yile msinga iyalinganiswa. Esi sixhobo sisebenzisa la maxabiso ukubala ukuhanjiswa kwamanzi okungalungiswanga.