Inzwa yokushisa iyisici esivamile ezinhlobonhlobo zamadivayisi ukusiza ukuqapha izinga lokushisa lokusebenza kumasekhethi.Ziyisici esisebenzayo ezinhlelweni ezihlobene nokuphatha amakhemikhali, izisetshenziswa zezokwelapha, amayunithi okucubungula ukudla kanye nokulawulwa kwemvelo kwesistimu ye-AC.Umshini owaziwa kakhulu i-thermometer, ewusizo ukukala ngokushesha izinga lokushisa loketshezi kuya kokuqinile.
Nazi izinhlobo ezine ezidume kakhulu zezinzwa lokushisa:
Thermocouple
Inzwa ye-thermocouple iyindlela edume kakhulu yokukala izinga lokushisa.Inezinhlobonhlobo zezinzuzo, njengokuzinika amandla, izindleko eziphansi futhi ezimangelengele ngokwedlulele.Lolu hlobo lwenzwa lusebenza ngokulinganisa izinguquko ezenzeka ku-voltage futhi lusebenza ngesimiso somphumela we-thermo-electric.Ngokuvamile ivikelwe isihlangu sensimbi noma se-ceramic ukwandisa amandla ayo okusebenza ezindaweni ezinzima.
I-Resistor Temperature Detector
I-resistor temperature detector (RTD) inamandla okunikeza idatha enembe kakhulu.Inzwa yangempela yakhiwe ngezinto eziningi ezigqoke kanzima, njengethusi, i-nickel neplatinamu.Lokhu kwenza kube nokwenzeka ukusebenza ebangeni lokushisa elibanzi elingahlukahluka kusuka ku--270 ° C kuya ku-850 ° C. Futhi, lolu hlobo lwenzwa kufanele luhlanganiswe nomsinga wangaphandle ukuze lusebenze ngokusemandleni alo.
Thermistor
I-thermistor iwuhlobo olwengeziwe lwenzwa okulula ukuyisebenzisa, eguquguqukayo futhi engabizi kakhulu.Inamandla okulungisa ukumelana kwayo lapho kutholwa ushintsho lokushisa.Le nzwa yokushisa yenziwa ngezinto zobumba ezifana ne-nickel ne-manganese, ezingabashiya engcupheni yokulimala.Isici esiwusizo yikhono lokuba nokuzwela okukhulu uma kuqhathaniswa ne-RTD.
I-thermometer
I-thermometer iyindlela esebenzayo yokukala izinga lokushisa lamagesi, uketshezi noma okuqinile.Iphethe utshwala noma uketshezi lwe-mercury eshubhuni yengilazi eqala ukwanda ngevolumu lapho izinga lokushisa liqala ukwenyuka.Ishubhu lengilazi eliphethe uketshezi limakwe ngesikali esilinganisiwe ukuze libonise ngokucacile ukukhuphuka noma ukwehla kwezinga lokushisa.Futhi, izinga lokushisa lirekhodwa kalula ezikalini eziningana, okuhlanganisa i-Celsius, i-Kelvin ne-Fahrenheit.
Sekukonke, kunezinhlobo eziningana ezahlukene zezinzwa zokushisa emakethe.Kubalulekile ukusebenzisa inzwa efanele ukufanisa uhlelo lokusebenza ngoba ukunemba kungahluka nokukhetha okuhlukile.Inzwa ekhethwe kabi ingaholela ekungasebenzini kahle kwedivayisi ngoba izinga lokushisa liye lavunyelwa ukuthi likhule ngaphandle kokunikezwa isixwayiso esifanele.