Ko te ine pāmahana tētahi o ngā āhuatanga tino nui o te whakahaere tukanga i waenga i ngā ahumahi. Ko te Pūoko Pāmahana Ātete (RTD) me te Pūoko Thermocouple (TC) ētahi o ngā pūoko pāmahana e whakamahia whānuitia ana. He kaupapa mahi motuhake tō ia pūoko, he whānuitanga ine me ngā āhuatanga e tika ana. Mā te mārama whānui ki ō rātou āhuatanga ka taea te whakakore i ngā feaa me te whakatau whai whakaaro mō te whakahaere tukanga. Pērā i te whakaaro pea o te tangata me pēhea te whiriwhiri i tētahi taputapu whakakapi ina hiahiatia he whakakapinga mō te taputapu RTD o nāianei, he pai ake rānei tētahi atu ātete wera, he pai ake rānei te pūoko thermocouple.
RTD (Kaitirotiro Pāmahana Ātete)
Ko te kaupapa o te RTD he whakarerekē i te ātete hiko o te rauemi whakarewa me te pāmahana. He mea hanga mai i te konukawata, he whanaungatanga tata-rārangi te RTD Pt100 e matapaetia ana i waenga i te ātete me te pāmahana, ko te 100Ω e rite ana ki te 0℃. Ko te whānuitanga pāmahana e tika ana mō te RTD kei te -200℃~850℃. Heoi anō, ki te taka te whānuitanga ine ki roto i te 600℃, ka taea te whakapai ake i tana mahi.
Te honohono wera
He taputapu te thermocouple e whakamahia ana hei ine i te pāmahana mā te pānga seebeck. Kei roto ko ngā konganuku rerekē e rua e honoa ana ki ia pito. Ka puta he ngaohiko e rite ana ki te rerekētanga pāmahana i waenga i te hononga wera (te wāhi e inehia ai) me te hononga makariri (ka mau tonu hei pāmahana iti iho). E ai ki te huinga o ngā rauemi e whakamahia ana, ka taea te wehewehe i te thermocouple ki ngā kāwai maha e pā ana ki te whānuitanga pāmahana me te aro. Hei tauira, he rawaka te Momo K (NiCr-NiSi) mō te tono tae atu ki te 1200℃, ko te Momo S (Pt10%Rh-Pt) ka taea te ine tae atu ki te 1600℃.
Whakataurite
Te whānuitanga ine:Ko te nuinga o te wā ka whai hua te RTD i waenga i te -200~600℃. He pai te thermocouple mō ngā pāmahana tino teitei mai i te 800~1800℃ i runga i te tohu, engari kāore i te tūtohutia kia inehia i raro i te 0℃.
Utu:He iti ake te utu o ngā momo thermocouple noa i te RTD. Heoi, ko ngā whakarārangitanga thermocouple kounga teitei i hangaia mai i ngā rauemi utu nui ka nui te utu, ā, ka rerekē pea tōna utu i runga i te mākete konganuku utu nui.
Te tika:E mōhiotia ana te RTD he tino tika, he ngāwari hoki te tukurua, e whakarato ana i ngā pānui pāmahana tika mō te whakahaere pāmahana tino kaha e hiahiatia ana ngā tono. Ko te nuinga o te wā, he iti ake te tika o te thermocouple i te RTD, ā, kāore i te tino matatau ki te whānuitanga pāmahana iti (<300℃). Me i whiwhi tohu paerua, kua pai ake te tika.
Wā Whakautu:He tere ake te urupare a te thermocouple ki te whakataurite ki te RTD, ā, he pakari ake i roto i ngā tono tukanga hihiri e tere whakarerekē ai te pāmahana.
Putanga:Ko te putanga ātete o te RTD he pai ake te mahi i runga i te pumau me te raina roa i te tohu ngaohiko o te thermocouple. Ka taea te huri i ngā putanga o ngā momo pūoko pāmahana e rua ki te tohu iahiko 4~20mA me ngā whakawhitiwhiti atamai.
Mai i ngā kōrero i runga ake nei, ka taea e tātou te whakatau ko te mea nui mō te whiriwhiri i waenga i te RTD me te thermocouple ko te whānuitanga pāmahana mahi hei ine. Ko te RTD te pūoko pai rawa atu i te awhe pāmahana iti-waenganui nā tōna mahi pai, engari he kaha ake te thermocouple i raro i ngā āhuatanga pāmahana teitei ake i te 800℃. Hoki atu ki te kaupapa, ki te kore he whakarerekētanga, he rerekētanga rānei i roto i te pāmahana whakahaere tukanga, kāore pea te whakakapinga o te thermocouple e hua ake he painga nui, he whakapainga rānei mai i te wā tono RTD taketake. Whakapā mai.Shanghai Wangyuanmēnā he āwangawanga, he tono rānei mō te RTD me te TR.
Wā tuku: Hakihea-30-2024