Iithermistors zisetyenziswa kakhulu kwizicelo zokubona ubushushu kunye nokulawula ubushushu kumashishini ahlukeneyo. Phakathi kweentlobo ezahlukeneyo zeii-thermistors, i-PTC (i-Positive Temperature Coefficient) kunye ne-PT100 zezona ntlobo zimbini zisetyenziswa kakhulu. Zombini ezi ntlobo zee-thermistors zisetyenziselwa ukulinganisa ubushushu, kodwa zineempawu kunye nezicelo ezahlukeneyo. Ukuqonda umahluko phakathi kwee-thermistors ze-PTC kunye ne-PT100 kubalulekile ekukhetheni i-sensor efanelekileyo kwiimfuno zakho ezithile zokuva ubushushu.
I-thermistor ye-PTC:
Ii-thermistors ze-PTC zii-resistor ezibuthathaka kubushushu ezine-coefficient yobushushu elungileyo, nto leyo ethetha ukuba ukumelana kwazo kuyanda njengoko ubushushu busanda. Ezi thermistors zenziwe ngezinto ze-ceramic ezifana ne-barium titanate, kwaye ukumelana kwazo kutshintsha kakhulu ngotshintsho kubushushu. Ii-thermistors ze-PTC zihlala zisetyenziswa kwizicelo ezifuna ukhuseleko lobushushu obugqithisileyo, ukuzilawula, kunye nokukhawulelana kombane.
Enye yezona mpawu ziphambili zee-thermistors ze-PTC ziimpawu zazo zokuzilawula. Njengoko ubushushu busanda, ukumelana kwe-thermistor ye-PTC kuyanda, nto leyo ebangela ukuba umbane wehle. Olu hlobo lokuzilawula lwenza ii-thermistors ze-PTC zilungele ukusetyenziswa njengokhuseleko lweemoto, izinto zokufudumeza, kunye nokhuseleko olugqithisileyo kwiisekethe ze-elektroniki.
Inzwa yobushushu ejikelezayo:
Ii-sensors zobushushu ezijikelezayo zisetyenziswa kwizixhobo zombane ukujonga ubushushu bee-windings kwiimoto, ii-transformer kunye nezinye izixhobo zombane. Ezi sensors zibalulekile ekuthinteleni ubushushu obugqithisileyo nokuqinisekisa ukusebenza okukhuselekileyo kwezixhobo. Ii-sensors zobushushu ezijikelezayo zihlala zisebenzisa ii-thermistors ze-PTC njengezinto zokuva ubushushu kuba zineempawu zokuzilungisa kwaye zinovelwano kakhulu kutshintsho lobushushu.
I-thermistor ye-PT100:
I-PT100 sisixhobo sokubona ubushushu bokumelana (RTD) esisebenzisa iplatinum njengento yokuva. Ngokungafaniyo nee-thermistors ze-PTC, ukumelana kwee-thermistors ze-PT100 kuyanda ngokuthe ngqo ngokweqondo lobushushu, kulandela ubudlelwane obuqhelekileyo bokumelana nobushushu obuchazwe yi-International Electrotechnical Commission (IEC). Ii-thermistors ze-PT100 zaziwa ngokuchaneka kwazo okuphezulu, ukuzinza kunye nobubanzi bokulinganisa ubushushu, nto leyo eyenza ukuba zilungele ukusetyenziswa kokulinganisa ubushushu ngokuchanekileyo.
I-thermistor ye-PT100 inokumelana kwe-100 ohms kwi-0°C kwaye inyuka malunga ne-0.385 ohms kwinqanaba ngalinye lokunyuka kobushushu. Olu lwalamano oluchanekileyo phakathi kokumelana nobushushu luvumela ukulinganiswa kobushushu okuchanekileyo nokuthembekileyo kuluhlu olubanzi lobushushu.
Umahluko phakathi kwe-PTC kunye ne-PT100:
Umahluko ophambili phakathi kwee-thermistors ze-PTC kunye ne-PT100 ziimpawu zazo zokumelana nobushushu. Ii-thermistors ze-PTC zibonisa ubudlelwane bokumelana nobushushu obungengomgca kunye ne-coefficient yobushushu elungileyo, ngelixa ii-thermistors ze-PT100 zinobudlelwane bokumelana nobushushu obungumgca kunye ne-coefficient yobushushu ephantse ibe yi-zero.
Omnye umahluko ophawulekayo zizinto ezisetyenziswa ekwakhiweni kwayo. Ii-thermistors ze-PTC zihlala zenziwe ngezinto ze-ceramic, ngelixa ii-thermistors ze-PT100 zisebenzisa iplatinum njengento yokuziva. Ukusetyenziswa kweplatinum kwii-thermistors ze-PT100 kunceda ekuchanekeni nasekuzinzeni kwazo okuphezulu, ingakumbi kwiindawo zoshishino nelebhu ezifuna kakhulu.
isicelo:
Ii-thermistors ze-PTC zingasetyenziselwa ukukhusela ngobushushu obugqithisileyo, izinto zokufudumeza ezizilawulayo, iisekethe ezithintelayo zangoku kunye nokukhusela iimoto. Ukuziphatha kwazo ngokuzilawulayo kuzenza zilungele ukusetyenziswa apho ulawulo lobushushu kunye nokhuseleko lubalulekile.
Kwelinye icala, ii-thermistors ze-PT100 zisetyenziswa kakhulu kwiindawo zoshishino nezelebhu ukuze kulinganiswe ubushushu ngokuchanekileyo. Zisetyenziswa kakhulu kwiinkqubo zokujonga ubushushu, amagumbi okusingqongileyo, iinkqubo ze-HVAC, kunye nezicelo zophando lwesayensi apho ukuva ubushushu ngokuchanekileyo nangokuzinzileyo kubalulekile.
Ngamafutshane, nangona zombini ii-thermistors ze-PTC kunye ne-PT100 zisetyenziselwa ukuva ubushushu, zineempawu kunye nokusetyenziswa kwazo okwahlukileyo. Ii-thermistors ze-PTC zaziwa ngokuziphatha kwazo okuzilawulayo kwaye zihlala zisetyenziswa kwizicelo ezifuna ukhuseleko oluphezulu kubushushu kunye nokunciphisa amandla ombane. Kwelinye icala, ii-thermistors ze-PT100 zibonelela ngokuchaneka okuphezulu kunye nozinzo, nto leyo ezenza zifaneleke ukulinganisa ubushushu ngokuchanekileyo kwiindawo zoshishino kunye nelebhu. Ukuqonda umahluko phakathi kwezi thermistors kubalulekile ekukhetheni i-sensor efanelekileyo kwiimfuno zakho ezithile zokuva ubushushu.
Ixesha leposi: Epreli-05-2024