Kodi pali kusiyana kotani pakati pa thermocouple ndi thermo resistance?

Pakadali pano,magalasiamagwiritsidwa ntchito padziko lonse lapansi kukhala ndi malingaliro ofanana. Malamulo apadziko lonse lapansi akuti ma magalasi amagawika m'magawo asanu ndi atatu, omwe ndi B, R, S, K, N, E, J ndi T, ndipo kutentha komwe kumayeza ndikotsika. Itha kuyeza kupatula 270 madigiri Celsius mpaka 1800 madigiri Celsius. Pakati pawo, B, R, ndi S ali mgulu la platinamu yama magalasi. Popeza platinamu ndichitsulo chamtengo wapatali, amatchedwanso miyala yamtengo wapatali yamagetsi ndipo otsalawo amatchedwa Metal thermocouple yotsika mtengo.

Pali mitundu iwiri yamagalasi, mtundu wamba ndi mtundu wa zida.

Ma thermocouple wamba nthawi zambiri amakhala ndi thermode, insulating chubu, manja oteteza ndi bokosi lolumikizirana, pomwe thermocouple yokhala ndi zida ndi kuphatikiza waya wa thermocouple, insulating material ndi manja oteteza zitsulo. Kuphatikiza kolimba kopangidwa ndi kutambasula. Koma chizindikiro chamagetsi cha thermocouple chimafunika waya wapadera kuti utumize, waya wamtunduwu umatchedwa waya wamalipiro.
Ma magalasi osiyanasiyana amafunikira mawaya olipira osiyanasiyana, ndipo ntchito yawo yayikulu ndikulumikizana ndi thermocouple kuti kumapeto kwa thermocouple kukhale kotalikirana ndi magetsi, kuti kutentha kwazomwe zimapangidwira kumakhala kokhazikika.

Ma waya olipirira amagawika m'magulu awiri: mtundu wa chipukuta misozi ndi mtundu wowonjezera
Makina owonjezera a waya ndi ofanana ndi a thermocouple omwe amalipidwa, koma pochita izi, waya wokulitsa sanapangidwe ndi chimodzimodzi ndi thermocouple. Nthawi zambiri, amasinthidwa ndi waya wokhala ndi ma elekitironi ofanana ndithermocouple. Kulumikizana pakati pa waya wamalipiro ndi thermocouple nthawi zambiri kumawonekera bwino. Mtengo wabwino wa thermocouple umalumikizidwa ndi waya wofiira wa waya wolipirira, ndipo mzati wolakwika umalumikizidwa ndi mtundu wotsalira.

Mawaya ambiri omwe amalipira chipukuta misozi amapangidwa ndi aloyi yamkuwa ya nickel.
Thermocouple ndiye chida chogwiritsira ntchito kwambiri chomwe chimagwiritsidwa ntchito poyesa kutentha. Makhalidwe ake akulu ndi kuchuluka kwa kutentha kwapakati, magwiridwe antchito, mawonekedwe osavuta, kuyankha kwamphamvu, ndikusinthira kotumiza kumatha kutumiza ma 4-20mA ma sign aposachedwa. , Ndi yabwino kulamulira basi ndi ulamuliro centralized.

Mfundo yathermocouplekuyeza kwa kutentha kumatengera mphamvu ya thermoelectric. Kulumikiza ma conductor awiri osiyana kapena semiconductors mu chipika chotsekedwa, pamene kutentha pamagulu awiriwa ndi osiyana, mphamvu ya thermoelectric idzapangidwa mu loop. Chodabwitsa ichi chimatchedwa thermoelectric effect, yomwe imadziwikanso kuti Seebeck effect. Mphamvu ya thermoelectric yomwe imapangidwa mu chipika chotsekedwa chimapangidwa ndi mitundu iwiri ya mphamvu zamagetsi; kusiyana kwa kutentha kwa magetsi ndi kukhudzana kwa magetsi.

Ngakhale kukana kwa matenthedwe kumagwiritsidwanso ntchito kwambiri m'makampani, kugwiritsa ntchito kwake kumakhala kochepa chifukwa cha kuyeza kwake kwa kutentha. Njira yoyezera kutentha kwamatenthedwe imadalira kukana kwa kondakitala kapena semiconductor wosintha ndikutentha. khalidwe. Ilinso ndi maubwino ambiri. Itha kuperekanso zizindikiritso zamagetsi kutali. Ili ndi chidwi chachikulu, kukhazikika kwamphamvu, kusinthasintha komanso kulondola. Komabe, imafunikira magetsi ndipo silingayeze kutentha kwakanthawi.

Kutentha komwe kumayesedwa ndi kukana kwamafuta komwe kumagwiritsidwa ntchito m'makampani kumakhala kochepa, ndipo kuyeza kwa kutentha sikufuna waya wamalipiro, ndipo mtengo wake ndi wotsika mtengo.