He rerekē ngā tikanga whakatikatika mita rere ultrasonic i runga i ngā whakaritenga tono, te urunga atu ki ngā taputapu, me ngā hiahia tika. Kei raro nei he whakamārama taipitopito o ngā huarahi whakatikatika noa, ā rātou tukanga, me ngā whakaaro mahi:
1. Whakarerekētanga Wheketere (Paerewa Matua)
Kaupapa
Ka whakatū i te tika o te tūāpapa i mua i te whakatinanatanga, mā te whakamahi i ngā pūnaha tohutoro tika.
Tikanga
Whakatikatika Porowhita Rere:
Ka tāuta te mita ki roto i tētahi porowhita rere whakahaeretia, e mōhiotia ana ngā āhuatanga wai (hei tauira, te pāmahana, te matotoru) me ngā tere rere e whakaputaina ana e ngā papu, e ngā tāpine rānei.
Ka whakamahia ngā mita tohutoro (hei tauira, ngā mita Coriolis, ngā mita tāpine, ngā mita momo piston rānei he iti iho i te 0.1% te tika) hei ine i te rere i te wā kotahi.
Ka whakaritea ngā pānui o te mita ultrasonic ki te tohutoro hei whakatika mō ngā hapa (hei tauira, ngā taupatupatu wā whakawhiti, ngā hapa tukatuka tohu rānei).
Te Whakautu Pāmahana me te Pēhanga:
Kei roto i te whakatikatika te whakamātautau puta noa i te awhe pāmahana e tumanakohia ana, nā te mea he tino whakawhirinaki te tere o te ngaru ultrasonic ki te pāmahana.
Ngā Painga
Te tika teitei rawa (te tikanga ±0.5%, neke atu rānei) nā runga i ngā āhuatanga whakahaere.
Ka whai i ngā paerewa ine ā-motu (hei tauira, NIST, UKAS).
Ngā Here
Kāore e taea mō ngā mita kua tāutahia ki te mara; me wetewete me te tuku.
2. Ngā Tikanga Whakamātautau Marae
a. Kaiwhakatika Rere Kawe (Manatoko i te Pae)
Kaupapa
Whakamana tere i te mara me te kore e tango i te mita.
Tikanga
Ngā Kaiwhakatikatika Momo-Pītona:
Ka whakaputahia e tētahi taputapu kawe tētahi rōrahi wai e mōhiotia ana i roto i te wā (hei tauira, 10 rita i roto i te 10 hēkona = 1 rita/s te tere rere).
Ka honoa te ine wā poto ki te paipa (ki te arai rānei) hei waihanga i tētahi pāoro rere e whakahaeretia ana.
Ka whakaritea te urupare a te mita ultrasonic ki te putanga o te taputapu tātari hei aromatawai i te tika.
Ngā Whakamātautau Doppler Ultrasonic:
Whakamahia he taputapu Doppler motuhake hei ine i te tere o te rere, kātahi ka whakatairite ki ngā pānui a te mita ūnga.
Ngā Painga
He kawe, kāore e pokanoa; he pai mō ngā whakawhiti whakapiri.
Tere ake i te whakatikatika wheketere (1–2 hāora ia mita).
Ngā Here
He iti iho te tika i ngā tikanga wheketere (te tikanga he ±1–2% te manawanui hapa).
Kāore i te pai mō ngā pūnaha rere nui, pēhanga nui rānei.
b. Whakataurite i te Mita Tohutoro (Tāutanga Whakarara)
Kaupapa
Te manatoko i te tika mō te wā roa i roto i ngā tono nui.
Tikanga
Tāutahia he mita tuarua, he mita tino tika (hei tauira, Coriolis, tāpine) kia whakarara ki te mita ultrasonic.
Whakatairite tonu i ngā panui i waenga i ngā mita e rua i roto i te wā.
Whakatikatikahia ngā tawhā o te mita ultrasonic (hei tauira, te whakanui, te taurite wā whakawhiti) mēnā ka nui ake ngā rerekētanga i te manawanui (hei tauira, >0.5% o te tauine katoa).
Ngā Painga
Ka whakamanahia i te wā tūturu, me te kore e whakararuraru i te rere o te kōrero.
He pai mō ngā tono whakawhiti mana pupuri, tono nama rānei.
Ngā Here
Te utu nui nā te nui o ngā taputapu me te tāutanga.
Me tika te tika o ngā paipa mō ngā mita e rua.
c. Te Whakatauira Rere me te Aromatawai Wai Rorohiko (CFD)
Kaupapa
Whakamanahia te mahi i roto i ngā kōtaha rere uaua (hei tauira, i muri i ngā piko o te paipa).
Tikanga
Whakamahia te pūmanawa CFD hei whakatauira i te āpure rere huri noa i te mita ultrasonic.
Ngā tawhā tāuru pēnei i te diameter o te paipa, te tere rere, me ngā āhuatanga o te aueue.
Whakatauritea te horapa o te ngaru ultrasonic i matapaetia e te tauira ki ngā pānui tuturu a te mita.
Ngā Painga
Kāore e pokanoa; kāore he whakarerekētanga tinana e hiahiatia ana.
Āwhina ki te tautuhi i ngā hapa e pā ana ki te tāutanga (hei tauira, te mokowā hē o te whakawhiti hiko).
Ngā Here
Me mātau ki te whakatauira CFD.
Ko te tika e whakawhirinaki ana ki te pono o ngā tawhā tāuru.
3. Whakarerekētanga-ā-Whaiaro (Tauātanga Ā-roto)
Kaupapa
Te aro turuki i te hauora i te wā tūturu me ngā whakarerekētanga iti.
Tikanga
Tirotiro i te Pūmautanga o te Wā Whakawhiti:
Ka ine tonu te mita i te ōritetanga o te wā haere o te ngaru ultrasonic.
Mā ngā rerekētanga mai i te turanga (hei tauira, nā te poke o te transducer, nā ngā putunga paipa rānei) ka whakaoho i ngā whakatūpato.
Tātaritanga o te Ōwehenga Tohu-ki-Haruru (SNR):
Aroturuki i te kaha o ngā tohu ultrasonic e whiwhihia ana.
Ko te SNR iti pea e tohu ana i te pirau o te transducer, i te poke rānei o te wai.
Te Whakautu-ā-Whaiaro o te Pāmahana:
Ka whakarerekē ngā pūoko pāmahana ā-roto mō ngā rerekētanga tere ngaru, ka whakaiti i te nekenekehanga.
Ngā Painga
Kāore e hiahiatia he taputapu o waho; me aroturuki tonu.
He iti te utu mō ngā tono kāore i te tino hira.
Ngā Here
Kāore e taea te whakatika i ngā hapa nui o te tika (hei tauira, nā te kino o te transducer).
Me whakamanahia i ia wā me ngā tikanga o waho.
4. Te Whakatikatika mō ngā Momo Ultrasonic Motuhake
a. Ngā Mita Wā Whakawhiti
Arotahi Matua: Whakatauritehia ngā inenga o te wā whakawhiti ki te tere rere.
Ngā Hipanga Motuhake:
Whakatikatikahia ngā pānga o te pāmahana ki te tere o te ngaru (hei tauira, mā te whakamahi i tētahi thermocouple i roto i te paipa).
Manatokohia te koki o ngā hihi ultrasonic (ko te tikanga he 45°–60°) kia tika ai te ine i te wāhanga tere.
b. Ngā Mita Doppler
Arotahi Matua: Whakatikatika i te nekehanga auau ki te tere o te matūriki.
Ngā Hipanga Motuhake:
Whakauruhia ngā kukū matūriki e mōhiotia ana (hei tauira, ngā pirepire whaikōrero) hei whakatauira i te rere.
Whakatikatikahia ngā tautuhinga whakanui hei arotau i te whakaata tohu mai i ngā matūriki.
5. Ngā Tikanga Pai mō te Whakatikatika
- Ngā Arowhai i mua i te Whakamaheretanga
Me whakarite kia kī tonu te paipa i te wai (kaua he putunga hau).
Manatokohia te tūnga o te whakawhiti ira (mō ngā tauira whakapiri) me te horoi i ngā mata mākū (mō ngā whakawhiti raina-roto).
- Wai Whakamātautau
Whakamahia te wai tukanga mēnā ka taea; ki te kore, whakamahia he wai hei whakakapi mō ngā āhuatanga oro ōrite (hei tauira, he wai mō ngā wai kore-mataku).
- Te Tuhi Raraunga
Tuhia ngā tawhā whakatikatika (tere rere, pāmahana, pēhanga) me ngā whakarerekētanga i mahia.
Kia mau tonu te whai i ngā paerewa whakatikatika (hei tauira, ngā tau tiwhikete).
6. Auautanga Whakatikatika mā te Tikanga
Tikanga Taumata Tikanga o te Wā Tūturu
Te whakatikatika i te wheketere Kotahi i mua i te whakatinanatanga ±0.5% neke atu rānei Ngā mita hou, ngā whakahoutanga nui rānei
Inenga kawe 6–24 marama ±1–2% Ngā tirotiro mara auau
Te whakataurite i ngā mita tohutoro 3–12 marama ±0.5% Te mana whakahaere nama, tukanga rānei e tika ana
Whakamātautau-ā-koe Tonu ±2–3% Aroturuki hauora wā-tūturu
Whakamutunga
Ka whakakotahi te whakatikatika mita rere oro-oro i ngā paerewa tuatahi o te wheketere me ngā tikanga manatoko mara i whakaritea mō ngā hiahia tono. Mō ngā whakaritenga tino tika (hei tauira, te whakawhiti pupuri), he mea nui ngā mita tohutoro whakarara, te whakatikatika anō rānei i te wheketere i ia wā, engari ko ngā tono kore-tino nui ka taea te whakawhirinaki ki ngā whakatikatika kawe, ki ngā tātaritanga-whaiaro rānei. Me whakarite tonu ngā tikanga whakatikatika ki ngā aratohu a te kaihanga me ngā paerewa ahumahi (hei tauira, ISO, API) kia pai ai te whai me te tutuki i ngā whakaritenga.
Wā tuku: Pipiri-22-2025