He pēhea te tika o te ine i te wera e ngā mita wera ultrasonic-piripiri?

Ko te tika o ngā mita wera ultrasonic-whakapiripiri he mea nui ki te whakamahi puta noa i ngā ahumahi, ā, e whakawhirinaki ana ki ngā taurangi maha—tae atu ki te hoahoa, ngā āhuatanga tāutanga, ngā āhuatanga wai, me te tutuki i ngā paerewa. Ina whiriwhiria tika, ina tāutahia, ina tiakina hoki, ka taea e ēnei mita te whakatutuki i ngā taumata tika teitei e tika ana mō te utu, te whakahaere tukanga, me te whakahaere pūngao. Kei raro nei he whakamārama taipitopito:

1. Ngā Paerewa me ngā Whakatauranga o te Tika

• EN 1434: Ko te paerewa matua o Ūropi mō ngā mita wera, e whakarōpū ana i ngā mita ki ngā akomanga tika i runga i te mahi ine rere (hei tauira, Akomanga 1, Akomanga 2) me te ine pāmahana.
• OIML R75: He paerewa ā-ao (International Organization of Legal Metrology) e tohu ana i ngā whakaritenga tika mō ngā tono hokohoko me te nama.

• Te Tika o te Ine Rere: ±1% ki te ±2% o te uara ine i raro i ngā āhuatanga tino pai (hei tauira, te rere pumau, te tika o te paipa, me te mārama o te wai). Mō ngā tere rere iti (e tata ana ki te rere iti rawa ka taea te ine o te mita), ka heke pea te tika (hei tauira, ±3% ki te ±5%).
• Te Tika o te Ine i te Pāmahana: ±0.1°C ki te ±0.2°C mō ngā pūoko pāmahana (ngā inemahana ātete PT100, PT1000 rānei), he mea nui tēnei nā te mea ko te tatau wera e whakawhirinaki ana ki te rerekētanga pāmahana (ΔT) i waenga i ngā wai tuku me ngā wai whakahoki.
• Te Tika o te Ine i te Wera Whānui: Ka tatauhia te wera mā te whakamahi i te tātai Q=∫(qm​×cp​×ΔT)dt, ko qm​ te rere o te papatipu, ko cp​ te kaha wera motuhake, ā, ko ΔT te rerekētanga pāmahana. Mā te whakakotahi i te tika o te rere me te pāmahana, ko te tika o te ine wera katoa kei waenga i te ±2% ki te ±5% i raro i ngā āhuatanga tino pai, e tutuki ana i ngā whakaritenga mō te utu (Akomanga 2, teitei ake rānei i runga i te EN 1434) me te aroturuki tukanga ahumahi.

2. Ngā Take e Pā Ana ki te Tika

a. Ngā Tikanga Tāutanga

• Te Tika me te Ārai o ngā Paipa: Ka taea e te aueue o ngā tuke, ngā takirere, ngā papu rānei e tata ana ki te pūoko te whakapōturi i ngā kōtaha rere, ka whakaiti i te tika. Ko ngā paerewa (hei tauira, EN 1434) e hiahia ana kia iti rawa te roa o ngā paipa tika i runga (hei tauira, 10× te whānui o te paipa) me raro (hei tauira, 5× te whānui o te paipa) o ngā pūoko kia mau ai te rere.
• Te Tūnga o te Pūoko: Mā te tūnga hē o te pūoko (hei tauira, te tūnga hē o ngā whakawhiti ultrasonic) te hononga ngoikore rānei (hei tauira, ngā āputa hau i waenga i ngā pūoko me ngā pakitara paipa nā te kore e tika te whakairinga) ka ngoikore te tuku tohu, ka puta ai ngā hapa ine.
• Te Hototahi o ngā Paipa me te Wai: Ka tino pai te mahi a ngā mita me ngā mata paipa maeneene, ma (kāore he waikura nui, he unahi rānei) me ngā wai kore-mākū (hei tauira, te wai, ngā ranunga glycol). Ka taea e te paru nui, te paru, ngā mirumiru hau rānei i roto i te wai te whakamarara i ngā tohu ultrasonic, ka whakaiti i te tika.

b. Ngā Āhuatanga Wai

• Te Mārama o te Wai: Ka taea e ngā mirumiru, ngā totoka, ngā matūriki iri rānei (hei tauira, te paru, ngā onepū) te whakamarara i ngā ngaru ultrasonic, ka ngaro te tohu, ka whakaata rānei. Ahakoa e whakamahi ana ngā mita hou i te tukatuka tohu matatau hei tātari i te haruru, ka taea tonu e ngā wai tino pōuri te whakaiti i te tika.
• Te Matatini me te Pāmahana: Mō ngā wai matatini (hei tauira, ngā ranunga wai-glycol i ngā pāmahana iti), ka rerekē pea ngā āhua rere, engari ko ngā mita whakapiri he pakari ki ngā rerekētanga matatini taurite.
• Te Awhe Rere: Ka heke te tika i waho o te awhe rere kua tohua e te mita (hei tauira, he tino iti te rere ina heke te ōwehenga tohu-ki-haruru). Ka whakaratohia e ngā kaihanga he "ōwehenga whakamuri" (hei tauira, 1:100, 1:200 rānei) e tohu ana i te awhe o ngā tere rere e mau tonu ana te tika.

c. Ngā āhuatanga taiao

• Haruru o Waho: Ka taea e ngā wiri, te pokanoa hikohiko (EMI), te haruru oro rānei mai i ngā mīhini tata te whakararuraru i ngā tohu ultrasonic. Mā ngā mita me te tātari tohu matatau ka whakaitihia tēnei, engari me tāpiri atu he parenga mō te tāutanga ki ngā taiao ahumahi haruru.
• Ngā Tino Pāmahana Tino Rahi: Ka rerekē pea te mahi a te pūoko i ngā pāmahana tino kino (hei tauira, < -20°C, > 60°C rānei), ahakoa kua hangaia ngā mita ā-ahumahi kia tū atu ki ngā awhe whānui me te iti o te hapa.

3. Te Tika i roto i ngā Taupānga o te Ao Tūturu

• Te Utu me te Whakamahana Rohe: Mō te utu ratonga (e whakahaeretia ana e ngā paerewa inenga ture), ka whakatikatikaina ngā mita kia tutuki ai te Akomanga 2, neke atu rānei i raro i te EN 1434, kia tika ai te tohatoha utu i waenga i ngā kaiwhakarato me ngā kaiwhakamahi mutunga.
• Te Aroturukitanga o ngā Tukanga Ahumahi: I roto i ngā pūnaha hangahanga, whakaputa hiko, HVAC rānei, ko te tikanga ka mahi ngā mita i roto i te ±2% ki te ±3% te tika, he rawaka mō te arotau i te whakamahinga pūngao, te kite i ngā ngoikoretanga (hei tauira, te ngaronga wera), me te whakahaere i ngā tukanga.
• Ngā Horopaki Whakahou: I roto i ngā paipa tawhito kua tauine, kua waikura, kua kore rānei e pai te rere o te wai, tera pea he iti ake te tika (hei tauira, ±3% ki te ±5%), engari he pai ake tēnei i ngā mita whakaeke, ka tūpono ka turuturu, ka roa rānei te wā e kore ai e whakamahia i te wā tāutanga.

4. Ngā Painga ki ngā Mita Whakauru i roto i te Tika

• Kāore he Hekenga Pēhanga, he Whakararuraru Rere rānei: Ka whakararuraru ngā mita urutomo i te rere, ka puta he hapa ine; ka waiho e ngā hoahoa whakapiripiri te roto o te paipa kia kore e pāngia, ka tiakina ngā āhua rere tūturu.
• Te Whakaiti i te Pānga Tiaki: Ko te korenga o ngā wāhanga neke, ngā wāhanga o roto rānei, ka iti ake te pakaru i te roanga o te wā, ka roa ake te pupuri i te tika i ngā mita miihini (e pirau ana nā te waku, te poke rānei).

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