I roto i ngā tawhā hangarau o ngā mita rere ultrasonic, ko te tika o te pānui me te tika tauine-katoa he ariā matua e rua e whakaahua ana i te tika o te ine, me ngā whakamāramatanga motuhake, ngā horopaki tono, me ngā āhuatanga awe. Anei tētahi whakamārama taipitopito:
1. Te Tika o te Pānui
Whakamāramatanga
Ko te tika o te pānui e pā ana ki te hapa i waenga i te uara ine o te mita rere me te tere rere tuturu, e whakaatuhia ana hei ōrau o te uara ine tuturu. Ko tōna tātai tatau ko:
Hapa = ± (a% × Uara ine tuturu + Pekenga pumau)
Kei hea
Hapa = ± (a% × Uara ine tuturu + Pekenga pumau)
Kei hea
a%ko te ōrau o te tika o te pānui, ā, ko te rerekētanga pumau he uara whakakapi mō ngā tere rere iti (hei tauira, ±0.01 m³/h).Ngā Āhuatanga
- He rite te hapa ki te tere rere tuturu: Ka nui ake te tere rere, ka nui ake te hapa tino whakaaetia; ka iti ake te tere rere, ka iti ake te hapa tino whakaaetia.
- He rite ake ki ngā horopaki whakamahinga o te ao tūturu: I ngā āhuatanga he nui ngā rerekētanga o te rere (hei tauira, ngā paipa ahumahi e rerekē ai te rere mai i te iti ki te teitei), ka pai ake te whakaata i te tika o te pānui i te tika o te ine.
- Tauira: Mena he ±1% te tika o te pānui o te mita rere, ina ko te tere rere tuturu he 100 m³/h, ko te hapa e whakaaetia ana o te uara inehia ko ±1 m³/h (arā, 99–101 m³/h); ina ko te tere rere tuturu he 10 m³/h, ko te hapa e whakaaetia ana ko ±0.1 m³/h (arā, 9.9–10.1 m³/h).
2. Te Tika Katoa
Whakamāramatanga
Ko te tika tauine-katoa e pā ana ki te hapa i waenga i te uara ine o te mita rere me te tere rere tuturu, e whakaatuhia ana hei ōrau o te awhe tauine-katoa o te mita rere. Ko tōna tātai tatau ko:
Hapa = ± (b% × Uara tauine-katoa + Pekenga pumau)
Kei hea
Hapa = ± (b% × Uara tauine-katoa + Pekenga pumau)
Kei hea
b%ko te ōrau o te tika o te tauine-katoa, ā, ko te uara tauine-katoa ko te tere rere mōrahi ka taea e te mita te ine (hei tauira, 1000 m³/h).Ngā Āhuatanga
- Ka pumau te hapa e pā ana ki te awhe tauine-katoa: Ahakoa te tere rere tuturu, ka whakatauhia te awhe hapa e te uara tauine-katoa, ahakoa te uara tuturu i inehia.
- Ngā hapa nui pea i ngā tere rere iti: Mena he iti iho te tere rere tuturu i te tauine katoa, ka nui ake te hapa whanaunga.
- Tauira: Mena he 1000 m³/h te tauine katoa o te mita rere, ā, ko te tika o te ±1%, ko te hapa tino whakaaetia ko ±10 m³/h ahakoa ko te tere rere tuturu he 1000 m³/h, he 100 m³/h rānei. I tēnei wā, ina he 100 m³/h te tere rere tuturu, ka taea e te hapa whanaunga te eke ki te ±10%, he nui ake i te mahi o te tika pānui.
3. Ngā Rerekētanga Matua me ngā Horopaki Taupānga
| Ahu Whakataurite | Te Tika o te Pānui | Te Tika Katoa |
|---|---|---|
| Tohutoro Hapa | Ōrau o te uara tuturu i inehia | Ōrau o te uara tauine-katoa |
| Mahi Rere-Iti | He iti ngā hapa, he tino tika te whakataurite | He nui ngā hapa, he iti te tika o te whanaungatanga |
| Ngā horopaki tono | Ngā āhuatanga me ngā piki me ngā heke o te rere o te wai, te nui rānei o te tono mō te tika o te rere o te wai (hei tauira, te tuku wai ā-tāone, te ine pūngao) | Ngā horopaki me te rere pumau tata ki te tauine katoa (hei tauira, ngā paipa ahumahi pumau) |
| Ngā Painga | He pai ake te whakaata i ngā hiahia tika o te ao tūturu | He māmā ake te whakatinana i te hangarau, he iti ake pea te utu |
4. Whakarāpopototanga
- He pai ake te whakaata a te tika o te pānui i te kaha ine pono o te mita rere puta noa i te awhe katoa, he mea tino pai mō ngā horopaki he nui ngā rerekētanga rere. He tohu matua tēnei mō ngā mita rere tino tika.
- Ka pai te mahi a te tika o te tauine katoa ina tata te rere ki te tauine katoa, engari ka nui pea ngā hapa i ngā tere rere iti, e whakamahia ana i ngā horopaki he iti ngā whakaritenga tika, he rere pumau rānei.
I te wā e whiriwhiri ana i tētahi mita rere ultrasonic, me whakarite kia tika te pānui i ngā taputapu kua tohua (ina koa i ngā horopaki he iti noa ngā reiti rere) i runga i ngā awhe rere tuturu, ngā whakaritenga tika, me ngā horopaki tono hei whakarite i te tika o te ine.
Wā tuku: Hurae-22-2025