Menene na'urar dumama jiki (thermostat)?
Masu sarrafa zafin jiki suna da sunaye iri-iri, kamar maɓallan sarrafa zafin jiki, masu kare zafin jiki da masu sarrafa zafin jiki. Dangane da ƙa'idar aiki, ana iya raba shi zuwa ma'aunin zafi na tsalle-tsalle, ma'aunin zafi na ruwa, ma'aunin zafi na nau'in matsi da ma'aunin zafi na lantarki. A cikin kayan aikin sarrafa masana'antu na zamani, ma'aunin zafi na dijital shine nau'in da aka fi amfani da shi. Dangane da tsarin, ana iya raba mai sarrafa zafin jiki zuwa mai sarrafa zafin jiki mai haɗawa da mai sarrafa zafin jiki mai daidaitawa.
Menene ma'aunin zafi da sanyi?
Jikin auna zafin jiki wani bangare ne da ke mayar da siginar zafin jiki zuwa siginar lantarki, kuma yawanci ana sanya shi a cikin ɓangaren gano yanayin zafin jiki na abin da aka sarrafa don sa ido kan ƙimar zafinsa. A fannin kula da masana'antu, ma'aunin zafi da ake amfani da su sun haɗa da thermocouples, resistor na zafi, thermistors da firikwensin da ba sa hulɗa. Daga cikinsu, uku na farko sune ma'aunin zafi da sanyi.
1. Maƙallin Thermocouple
Ka'idar auna zafin jiki ga ma'aunin zafi ta dogara ne akan tasirin Seebeck (tasirin thermoelectric). Lokacin da ƙarfe biyu na kayan aiki daban-daban (yawanci masu jagoranci ko semiconductors, kamar platinum-rhodium, nickel-chromium-nickel-silicon da sauran kayan da aka haɗa) suka samar da madauri mai rufewa kuma suka shafa yanayin zafi daban-daban a ƙarshen haɗinsu guda biyu, ana samar da ƙarfin lantarki tsakanin ƙarfe biyu. Irin wannan madauri ana kiransa "thermocouple," yayin da ƙarfe biyu ake kiransa "thermal electrode," kuma ƙarfin lantarki da ya haifar ana kiransa "thermoelectric motivation force." Ana siffanta ma'aunin zafi ta hanyar kewayon zafin jiki mai faɗi, amsawar zafi mai sauri, da juriya mai ƙarfi ga girgiza.
2. Juriyar zafi
Juriyar zafi wani bangare ne da ke canza siginar zafin jiki zuwa siginar lantarki, kuma ka'idar aikinsa ta dogara ne akan halayen canje-canjen juriyar ƙarfe tare da zafin jiki. Musamman, masu juriyar zafi suna amfani da wannan sifar ƙarfe don auna zafin jiki.
A fannin sarrafa masana'antu, nau'ikan juriyar zafi da aka fi amfani da su sun haɗa da platinum, jan ƙarfe da nickel. Daga cikinsu, juriyar platinum ita ce mafi yawan. juriyar zafi tana da halaye na kyakkyawan layi na zafin jiki, aiki mai karko da kuma babban daidaito a fannin zafin jiki na yau da kullun. Saboda haka, a yanayin amfani da yanayin zafi mai matsakaici, babu girgiza da buƙatun daidaito mai yawa, yawanci ana fifita amfani da juriyar platinum.
3. Mai gyaran jiki
Thermistor wani bangare ne da ke canza siginar zafin jiki zuwa siginar lantarki, kuma ka'idar aikinsa ta dogara ne akan halayen juriyar semiconductor da ke canzawa tare da zafin jiki. Musamman ma, thermistors suna amfani da wannan sifar semiconductor don auna zafin jiki. Idan aka kwatanta da juriyar zafi, juriyar thermistor tana canzawa sosai tare da canjin zafin jiki, don haka kewayon auna zafin jiki yana da ɗan ƙaranci (-50~350℃).
An raba na'urorin Thermistors zuwa na'urorin NTC thermistors da na PTC thermistors. Na'urorin NTC thermistors suna da na'urar auna zafin jiki mara kyau, kuma ƙimar juriyarsu tana raguwa yayin da zafin jiki ke ƙaruwa. Na'urar PTC thermistor tana da na'urar auna zafin jiki mai kyau, kuma ƙimar juriyarta za ta ƙaru tare da ƙaruwar zafin jiki. Saboda halayen yanayin zafin jiki na musamman, na'urar thermistor tana da nau'ikan aikace-aikace iri-iri a cikin gano zafin jiki, sarrafa atomatik, na'urorin lantarki da sauran fannoni.
Kamfanin Zhuo Meng Shanghai Auto Co., Ltd. ya kuduri aniyar sayar da kayayyakin motar MG&MAUXS. Ana maraba da siyan su.
