ʻO Guided Wave Radar (GWR) kahi mea ana pae e pili ana i ka noʻonoʻo microwave i hōʻailona ʻia e kāna hoʻohana ʻana i kahi probe metala (waveguide) e kuhikuhi i ka hoʻolaha ʻana o ka hōʻailona microwave. Hiki iā ia ke ana pololei i nā pae wai, nā interfaces, a i ʻole nā nui no nā media e like me nā wai, nā ʻāpana paʻa, a i ʻole nā slurries. ʻAʻole e like me nā mika pae radar ʻaʻole pili, ʻaʻole hoʻolaha manuahi nā hōʻailona microwave a GWR i ka lewa akā hele pololei ma ke kuhikuhi ma ka probe, e hāʻawi ana iā ia i nā pono kūikawā i nā kūlana hana paʻakikī. Aia ma lalo kahi hoʻolauna kikoʻī e uhi ana i kāna kumu hana, nā ʻāpana koʻikoʻi, nā hiʻohiʻona koʻikoʻi, nā hiʻohiʻona noi, a me nā palena.
I. Kumu Hana
Hoʻopuka ka Guided Wave Radar i nā hōʻailona microwave alapine kiʻekiʻe (ma ke ʻano he 6GHz a i ʻole 26GHz) ma o kahi modula hoʻoili. Hoʻokele ʻia kēia mau hōʻailona ma o nā probes metala kūikawā (e laʻa, nā kaula kila, nā koʻokoʻo paʻa, nā kaula coaxial) i ka ʻili o ka medium. Ke hālāwai nā hōʻailona microwave i ka pilina ma waena o ka medium a me ka ea, ua hōʻike ʻia kahi hapa o ka hōʻailona a hele hou ma ke ʻano o ka probe i ka module loaʻa. Hoʻomaulia ka mea hana i ke kiʻekiʻe o ka pae ma ke ana ʻana i ka ʻokoʻa manawa (a i ʻole ka ʻokoʻa alapine) ma waena o ka hoʻoili hōʻailona a me ka hōʻike ʻana, i hui pū ʻia me ka wikiwiki o ka hoʻolaha ʻana o nā microwave i loko o ka medium.
- Haʻilula Kumu: Ke kiʻekiʻe o ka pae H=2v×t, kahi ʻo v ka wikiwiki o ka hoʻolaha ʻana o nā microwave i loko o ka probe, a ʻo t ka manawa hele a puni o ka hōʻailona.
- Ke Kālele ʻana i nā Hōʻailona: Hoʻopaʻa ka probe i ka ikehu microwave i kahi palena, e pale ana i ka pilikia divergence o nā hōʻailona radar non-contact e pālahalaha ana i ka lewa, e hopena ana i nā hōʻailona i hōʻike ʻia ikaika a paʻa hoʻi.
II. Nā ʻĀpana Koʻikoʻi
He ʻano paʻa ko ka Guided Wave Radar, nona ka hapa nui o nā ʻāpana penei:
- ʻĀpana Uila: Kuleana no ka hoʻopuka ʻana, ka hoʻouna ʻana, ka loaʻa ʻana, a me ka hana ʻana i nā hōʻailona microwave. Loaʻa iā ia kahi microprocessor i kūkulu ʻia no ka helu ʻana a me ka hoʻopuka ʻana i ka ʻikepili (e laʻa, 4-20mA, HART, nā hōʻailona RS485).
- Probe (Waveguide): ʻO ke "kahawai hoʻoili" no nā hōʻailona microwave, me nā ʻano maʻamau e like me:
- Nā Probes Rod Rigid: Kūpono no nā wai haʻahaʻa-viscosity a me nā kūlana ʻaʻole turbulent, e hāʻawi ana i ke kūpaʻa haʻalulu ikaika.
- Nā ʻImi Uea Kila: Kūpono no nā pahu hohonu, nā mea hoʻolaha viscosity kiʻekiʻe, a i ʻole nā mea i loaʻa nā mea paʻa i hoʻokuʻu ʻia, e hāʻawi ana i ka maʻalahi kiʻekiʻe.
- Nā Probes Coaxial: Hele nā hōʻailona ma waena o nā alakaʻi o loko a me waho, kūpono no nā mea pāpaho dielectric haʻahaʻa (e laʻa, nā aila māmā, nā kinoea liquefied) me ka hiki ke kūʻē i ka hoʻopilikia ʻia.
- ʻO ke kau ʻana o ka Flange/Interface: Hoʻopaʻa i ka mea kani i ka pahu wai, me nā mea i koho ʻia ma muli o ka corrosion medium (e laʻa, 316L stainless steel, Hastelloy).
III. Nā ʻano koʻikoʻi
1. Ka hiki ke kū'ē i ke komo ʻana no nā kūlana paʻakikī
- Holoholo nā hōʻailona microwave ma ke ala o ka probe, e hoʻēmi ana i ka hopena o nā mea pili i ke kaiapuni e like me ka mahu, ka lepo, ka huʻa, a i ʻole ka noe. Noho paʻa lākou ʻoiai ma nā wahi huʻa kiʻekiʻe (e like me nā pahu hoʻoulu pia) a i ʻole ma lalo o ka hoʻoluliluli nui.
- Pale ʻia i ke komo ʻana mai nā ʻano hana o loko o ka pahu (e like me nā mea hoʻonāukiuki, nā baffles), i ka wā e pālahalaha ai nā hōʻailona ma ke ala o ka probe, e pale ana i nā leo wahaheʻe i maʻamau i ka radar non-contact.
2. Ka Pololei o ke Ana ʻana a me ke Kūpaʻa
- ʻO ka pololei o ke ana ʻana mai ±0.05%FS a i ±0.1%FS, me nā hewa hana hou e like me ka haʻahaʻa o ±0.02%FS, e ʻoi aku ka maikaʻi ma mua o kekahi mau hiʻohiʻona radar ʻaʻole hoʻopili.
- ʻO ka ikaika o ka hōʻailona hoʻomālamalama e hilinaʻi nui ʻia ma ka pilina ma waena o ka probe a me ka medium, e kūpono ana no nā media dielectric constant haʻahaʻa (e laʻa, gasoline, gas liquefied).
3. Ka hiki ke hoʻololi i nā pāpāho like ʻole a me nā wahi koʻikoʻi
- Hoʻohālikelike Waena: Hiki ke ana i nā wai (me ka viscosity kiʻekiʻe, nā mea hoʻoheheʻe e like me ka syrup a me ka soda caustic), nā ʻāpana paʻa (e like me nā pellets plastik, ka pauka lanahu), nā slurries (e like me ka lepo, ka wai huaʻai), a me nā pilina (e like me nā pilina aila-wai).
- Ke Hoʻomanawanui Kaiapuni: Kū i nā mahana kiʻekiʻe (-50 ℃ a i 400 ℃), nā kaomi kiʻekiʻe (a hiki i ka 40MPa), a me nā wahi ʻino loa, kūpono no nā mea hana kemika, nā pahu mālama kiʻekiʻe, a pēlā aku.
4. Hoʻokomo maʻalahi no nā wahi paʻa
- Hiki ke hoʻokomo ʻia nā probes i loko o nā pahu liʻiliʻi, nā ipu ʻano ʻē, a i ʻole nā ipu me nā mea keakea i loko, ʻaʻole pono kahi ākea o luna. He kūpono loa lākou no nā papahana hoʻoponopono hou a i ʻole nā wahi haiki.
IV. Nā hiʻohiʻona noi
Hoʻohana nui ʻia ka Guided Wave Radar ma nā kahua aʻe ma muli o kāna hana anti-interference a me ka pololei kiʻekiʻe:
- ʻOihana Kemika: Ke ana ʻana o ka pae i loko o nā reactors, nā pahu mālama kiʻekiʻe/haʻahaʻa, a me ka ʻike ʻana i ka pilina aila-wai.
- ʻAila a me ka Petrochemical: Ke ana ʻana o ka pae i loko o nā pahu ʻaila maka, nā pahu ʻaila māmā (penisini, diesel), a me nā pahu mālama kinoea wai.
- Mea ʻAi a me Mea Inu: Ke ana ʻana i ka pae i loko o nā pahu hoʻoulu hua kiʻekiʻe (e like me ka pia, yogurt), nā pahu syrup, a me nā slurries wai huaʻai (me nā mea probe papa meaʻai).
- Ka Hoʻōla Wai: Ke ana ʻana i ka pae i loko o nā pahu hoʻōla wai ʻino a me nā loko sedimentation, e pale ana i ke komo ʻana o ka huʻa.
- ʻOihana Ikehu: Ke ana ʻana o ka pae i loko o nā silos pauka lanahu a me nā ʻōpala lehu, a me ka nānā ʻana i ka pae paila wela kiʻekiʻe.
V. Nā Palena
- Nā Pono Mālama no ke Ana Hoʻopili: Aia nā probes i ka pili pono ʻana me ka medium, hiki ke haumia a paʻa paha ma muli o ka mānoanoa, e pono ai ka hoʻomaʻemaʻe mau. Hiki i nā media ʻino loa ke hana i ka ʻaʻahu o ka probe, e pono ai nā mea kūikawā (e hoʻonui ana i nā kumukūʻai).
- Ka Laulā Ana Palena: Hoʻoholo ʻia ka laulā kiʻekiʻe loa e ka lōʻihi o ka probe, me nā hiʻohiʻona maʻamau mai 0.3m a 30m, ʻaʻole kūpono no nā pahu nui loa (hiki i ka radar non-contact ke uhi a hiki i 100m).
- Nā Palena i nā Hana Hoʻomaʻemaʻe: I nā meaʻai, nā lāʻau lapaʻau, a me nā hiʻohiʻona hoʻomaʻemaʻe kiʻekiʻe ʻē aʻe, he paʻakikī nā kaʻina hana hōʻoia hoʻomaʻemaʻe probe, e hoʻonui ana i nā kumukūʻai hoʻokō (ʻoi aku ka maikaʻi o ka radar non-contact ma muli o ka ʻole o ka hoʻopili ʻana).
- Ka Pōʻino o ke Kau ʻana o ka Probe: I nā kūlana me ke kahe ʻana o ka pāpāho hoʻoluliluli a haunaele paha, pono e hoʻokomo i nā lima pale probe e pale aku i ka haki ʻana mai nā kuʻi ʻana.
VI. Nā ʻokoʻa koʻikoʻi mai ka Radar Hoʻokaʻaʻike ʻole
| Ana Hoʻohālikelike | Radar Nalu Alakaʻi | Radar Hoʻopili ʻole |
|---|---|---|
| Hoʻolaha Hōʻailona | Kuhikuhi ma ke ala o ka probe | Hoʻolaha manuahi i ka lewa |
| Ka hiki ke kū'ē i ke komo ʻana | Ikaika (pale i ka huʻa, ka mahu, ka lepo) | ʻOi aku ka nāwaliwali (koi i ka hoʻolālā alapine kiʻekiʻe a i ʻole ka hoʻonui ʻana i ka antenna) |
| Ka ʻike i ka Dielectric Constant | Haʻahaʻa (kūpono no nā pāpaho dielectric haʻahaʻa) | Kiʻekiʻe (nā hōʻailona nāwaliwali no nā pāpaho dielectric haʻahaʻa) |
| Ka Hoʻololi ʻana i nā Koina Sanitary | Kaupalena ʻia (hōʻoia hoʻomaʻemaʻe pinepine) | Maikaʻi loa (ʻaʻohe pili, kūlike me nā kūlana FDA/3-A) |
| Kumukūʻai mālama | Kaulike (hoʻomaʻemaʻe probe, pale ʻana i ka palaho) | Haʻahaʻa (ʻaʻohe pili, ʻaʻohe ʻaʻahu) |
| Ka Pae Ana Loa | ʻO ka maʻamau ≤30m | A hiki i 100m |
Hopena
He koho kūpono ʻo Guided Wave Radar no ke ana ʻana i ka pae ma nā kūlana hana paʻakikī, ʻoi aku ka maikaʻi ma ka huʻa kiʻekiʻe, ka dielectric constant haʻahaʻa, kahi i hoʻopaʻa ʻia, a i ʻole nā wahi koʻikoʻi. Eia nō naʻe, ʻo kona ʻano ana pili e hoʻolauna i nā pono mālama a me nā palena o ka noi. I ke koho pono ʻana, pono e loiloi piha ʻia nā mea e like me nā ʻano waena (viscosity, corrosiveness, dielectric constant), nā kūlana kaiapuni (mahana, kaomi, ākea), a me nā koi sanitary. Inā pono, hiki ke hoʻohana ʻia me ka radar non-contact e uhi i nā hiʻohiʻona hou aku.
Ka manawa hoʻouna: Iulai-22-2025