ʻĀpana
He mea koʻikoʻi nā mika kahe i ka hoʻomalu kaʻina hana ʻoihana, ke ana ikehu, a me ka nānā ʻana i ke kaiapuni. Hoʻohālikelike kēia pepa i nā loina hana, nā ʻano ʻenehana, a me nā noi maʻamau o nā mika kahe electromagnetic, nā mika kahe kani ultrasonic, a me nā mika kahe o ke kinoea. Electromagnetic kahe ana mika ua kūpono no conductive wai, kani ultrasonic kahe ana mika hāʻawi non-contact kiʻekiʻe-pololei ana, a kinoea kahe ana mika hāʻawi like 'ole no ka likeʻole kinoea media (e laʻa, kinoea kinoea, hana kinoea kinoea). Hōʻike ka noiʻi ʻana i ke koho ʻana i ka mika kahe kūpono hiki ke hoʻomaikaʻi i ka pololei o ke ana ʻana (hewa <± 0.5%), hoʻemi i ka hoʻohana ʻana i ka ikehu (15%–30% hoʻolaʻa), a hoʻomaikaʻi i ka maikaʻi o ke kaʻina hana.
1. Electromagnetic Flow Meter
1.1 Kumu Hana
Ma muli o ke Kānāwai Electromagnetic Induction a Faraday, ʻo nā wai conductive e kahe ana ma ke kahua magnetic e hoʻohua i ka volta e like me ka wikiwiki o ke kahe, i ʻike ʻia e nā electrodes.
1.2 Nā hiʻohiʻona ʻenehana
- Media kūpono: Nā wai hoʻoheheʻe (conductivity ≥5 μS/cm), e like me ka wai, nā waikawa, nā alkalis, a me nā slurries.
- Pono:
- ʻAʻohe ʻāpana hoʻoneʻe, pale ʻaʻahu, lōʻihi ke ola lawelawe
- Laulā ana laula (0.1–15 m/s), hiki ʻole ke poho puʻe
- ʻO ka pololei kiʻekiʻe (± 0.2%–± 0.5%), ke ana kahe lua
- Nā palena:
- ʻAʻole kūpono i nā wai non-conductive (e laʻa, ka aila, ka wai maʻemaʻe)
- Hiki ke hoʻopilikia ʻia e nā ʻōhū a i ʻole nā ʻāpana paʻa
1.3 Nā noi maʻamau
- Ka Wai Kaona/Wastewater: Ka nānā ʻana i ke kahe o ke anawaena nui (DN300+).
- ʻOihana Kemika: Ana wai ʻino (e laʻa, sulfuric acid, sodium hydroxide)
- Meaʻai/Laʻau Laʻau: Nā hoʻolālā maʻemaʻe (e laʻa, hoʻomaʻemaʻe CIP)
2. Ultrasonic Flow Meter
2.1 Kumu Hana
E ana i ka wikiwiki o ka holo ʻana me ka ʻokoʻa o ka manawa transit (time-of-flight) a i ʻole ka hopena Doppler. ʻElua ʻano nui:
- Clamp-on (Non-invasive): Hoʻokomo maʻalahi
- Hoʻokomo: He kūpono no nā paipu nui
2.2 Nā hiʻohiʻona ʻenehana
- Media kūpono: ʻO nā wai a me nā kinoea (nā hiʻohiʻona kikoʻī i loaʻa), kākoʻo i ka kahe hoʻokahi / nui.
- Pono:
- ʻAʻohe hāʻule kaomi, kūpono no nā wai viscosity kiʻekiʻe (e laʻa, ka aila ʻaila)
- Laulā ana ākea (0.01–25 m/s), pololei a hiki i ±0.5%
- Hiki ke hoʻouka ʻia ma ka pūnaewele, mālama haʻahaʻa
- Nā palena:
- Hoʻopili ʻia e nā mea paipu (e laʻa, hiki i ka hao ke hoʻemi i nā hōʻailona) a me ka homogeneity wai
- Pono ke ana pololei loa i ke kahe paa (e pale i ka haunaele)
2.3 Nā noi maʻamau
- ʻAila a me Gas: Ka nānā ʻana i ka pipeline mamao
- Pūnaehana HVAC: Ana ikehu no ka wai anuanu/wela
- Ka nānā 'ana i ke kaiapuni: Ana kahawai / kahe wai (nā hi'ohi'ona lawe lima)
3. Meka Kahe Gas
3.1 Nā ʻano nui a me nā hiʻohiʻona
| ʻAno | Kumukānāwai | Nā kinoea kūpono | Nā pono | Nā palena |
|---|---|---|---|---|
| Kaumaha wela | Hoʻopau wela | Nā kinoea maʻemaʻe (ea, N₂) | Kahe nuipaa pololei, ʻaʻohe uku pānaʻi | ʻAʻole kūpono no nā kinoea haʻahaʻa/puehu |
| Vortex | alanui vortex o Kármán | Mokuahi, kinoea maoli | Kū'ē kiʻekiʻe / puʻe | Haʻahaʻa haʻahaʻa i ka haʻahaʻa kahe |
| Turbine | ʻO ka hoʻololi ʻana o ka rotor | kinoea maoli, LPG | Pololei kiʻekiʻe (±0.5%–±1%) | Pono ka mālama ʻana i ka bearing |
| Pumi ʻokoʻa (Puka) | Ke kumu o Bernoulli | ʻOihana kinoea | ʻO ke kumukūʻai haʻahaʻa, hoʻohālikelike ʻia | Pohō puʻe mau loa (~30%) |
3.2 Nā noi maʻamau
- ʻĀpana ikehu: Hoʻoili mālama kinoea kūlohelohe
- Hana Hana Semiconductor: Hoʻomalu kinoea maʻemaʻe kiʻekiʻe (Ar, H₂)
- Ka nānā 'ana i ka ho'oku'u 'ana: ke ana kahe o ke kinoea (SO₂, NOₓ).
4. Hoʻohālikelike a me nā alakaʻi koho
| ʻĀpana | Electromagnetic | Ultrasonic | kinoea (Hoʻohālike wela) |
|---|---|---|---|
| Media kūpono | Nā wai hoʻoheheʻe | Nā wai/ kinoea | Nā kinoea |
| Ka pololei | ±0.2%–0.5% | ±0.5%–1% | ±1%–2% |
| Paʻi Paʻi | ʻAʻohe | ʻAʻohe | liʻiliʻi |
| Hoʻokomo | Pipu piha, kahua | Pono ka holo pololei | Hōʻalo i ka haʻalulu |
| Koina | Kūwaena-kiʻekiʻe | Kūwaena-kiʻekiʻe | Haʻahaʻa haʻahaʻa |
Koho Koho:
- ʻO ke ana wai: Electromagnetic no nā wai conductive; kani ultrasonic no ka non-conductive/corrosive media.
- Ana kinoea: Thermal no nā kinoea maʻemaʻe; vortex no ka mahu; turbine no ka hoʻoili mālama.
- Pono Kūikawā: Pono nā noi hoʻomaʻemaʻe i nā hoʻolālā make-space-free; pono nā mea pāhana wela wela.
5. Nā Manaʻo Manaʻo a me nā ʻano o ka wā e hiki mai ana
- ʻO nā mika kahe electromagnetic ka mea i hoʻomalu i nā ʻoihana kemika/wai, me nā holomua e hiki mai ana i ke ana ʻana o ka wai haʻahaʻa haʻahaʻa (e laʻa, ka wai ultrapure).
- Ke ulu nei nā mita kahe kani ultrasonic i ka wai akamai / hoʻokele ikehu ma muli o nā pono pili ʻole.
- Ke hoʻololi nei nā mika kahe o ke kinoea i ka hoʻohui ʻana i nā ʻāpana he nui (e laʻa, ka uku ʻana i ka mahanahana/pepa + ka nānā ʻana i ka haku mele) no ka ʻoi aku ka pololei.
- ʻO ka hoʻonohonoho piha o nā kikowaena a me nā polokalamu uila uila, kākoʻo iā RS485 GPRS / 4g / WIFI / LORA / LORAWANNo ka ʻike hou aku o ka mika kahe,
e ʻoluʻolu e kelepona iā Honde Technology Co., LTD.
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Ka manawa hoʻouna: ʻAukake-13-2025