K-mtundu wa thermocouple ndi sensa yomwe imagwiritsidwa ntchito nthawi zambiri, ndipo zinthu zake zimakhala ndi mawaya awiri achitsulo. Mawaya awiri achitsulo nthawi zambiri amakhala faifi tambala (Ni) ndi chromium (Cr), yomwe imadziwikanso kuti nickel-chromium (NiCr) ndi nickel-aluminium (NiAl) thermocouples.
Mfundo yogwirira ntchito yaK-mtundu wa thermocouplezimachokera ku mphamvu ya thermoelectric, ndiko kuti, pamene mawaya azitsulo ziwiri zosiyana ali pa kutentha kosiyana, mphamvu ya electromotive idzapangidwa. Ukulu wa mphamvu ya electromotive iyi ndi yofanana ndi kusiyana kwa kutentha kwa mgwirizano, kotero kutentha kwa kutentha kungadziwike poyesa kukula kwa mphamvu ya electromotive.
Ubwino wa K-mtunduthermocoupleszikuphatikizapo miyeso yotakata, yolondola kwambiri, kukhazikika kwabwino, nthawi yoyankha mwachangu, ndi kukana kwamphamvu kwa dzimbiri. Nthawi yomweyo, itha kugwiritsidwanso ntchito pazovuta zosiyanasiyana zachilengedwe, monga kutentha kwambiri, makutidwe ndi okosijeni, dzimbiri ndi malo ena. Chifukwa chake, ma thermocouples amtundu wa K amagwiritsidwa ntchito kwambiri m'makampani, mphamvu, kuteteza chilengedwe, zamankhwala ndi zina.
Popanga ma thermocouples amtundu wa K, zida zoyenera zachitsulo ndi njira ziyenera kusankhidwa kuti zitsimikizire kuti zikugwira ntchito komanso kukhazikika. Nthawi zambiri, mawaya a nickel-chromium ndi nickel-aluminiyamu amakhala ndi zofunikira zachiyero ndipo amafuna njira zapadera zosungunulira ndi kukonza. Panthawi imodzimodziyo, chidwi chiyenera kuperekedwa kuti zitsimikizire ubwino ndi kukhazikika kwa zolumikizira panthawi yopangira zinthu kuti zipewe mavuto monga kutentha kwa kutentha kapena kulephera.
Nthawi zambiri, ma thermocouples amtundu wa K amapangidwa makamaka ndi mawaya achitsulo ndi chromium. Kuchita kwawo kumakhala kokhazikika komanso kodalirika, ndipo amagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana oyezera kutentha. M'mapulogalamu ogwiritsira ntchito, ndikofunikira kusankha mtundu woyenera wa thermocouple ndi mafotokozedwe molingana ndi malo ogwiritsira ntchito ndi zofunikira, ndikukhazikitsa ndikuwongolera moyenera kuti zitsimikizire kulondola kwake komanso moyo wautumiki.
Zomwe zili pamwambazi ndikuyambitsa mwachidule zamtundu wa K-mtundu wa thermocouple. Ndikukhulupirira kuti ingakuthandizeni kumvetsetsa mfundo yogwirira ntchito ndikugwiritsa ntchito sensor ya kutentha iyi. Ngati mukufuna zambiri zatsatanetsatane kapena maulalo azithunzi kuti mumvetsetse bwino zakuthupi ndi kapangidwe ka K-mtundu wa thermocouples, chonde omasukandifunsenifunso ndipo ndikupatseni posachedwa.
Nthawi yotumiza: Mar-04-2024
