Mathermistori anoshandiswa zvakanyanya mukuongorora tembiricha uye mashandisirwo ekudzora tembiricha mumaindasitiri akasiyana siyana. Pakati pemhando dzakasiyana dzemathermistor, PTC (Positive Temperature Coefficient) uye PT100 ndiwo marudzi maviri anowanzoshandiswa. Mhando dzese dzethermistors dzinoshandiswa pakuyera tembiricha, asi dzine hunhu hwakasiyana uye mashandisirwo adzo. Kunzwisisa musiyano uripo pakati pePTC nePT100 thermistors kwakakosha pakusarudza sensor yakakodzera zvinodiwa zvako zvekunzwa tembiricha.
PTC thermistor:
Mathermistori ePTC maresistor anonzwa tembiricha ane coefficient yakanaka yetembiricha, zvinoreva kuti resistance yawo inowedzera kana tembiricha ichiwedzera. Mathermistori aya akagadzirwa nezvinhu zveceramic zvakaita sebarium titanate, uye resistance yawo inochinja zvakanyanya nekuchinja kwetembiricha. Mathermistori ePTC anowanzo shandiswa muzvishandiso zvinoda dziviriro yetembiricha yakawandisa, kuzvidzora, uye current limitation.
Chimwe chezvinhu zvikuru zvePTC thermistors ndezvekuti dzinozvidzora. Sezvo tembiricha ichiwedzera, kuramba kwePTC thermistor kunowedzera, zvichiita kuti magetsi aderere. Maitiro aya ekuzvidzora anoita kuti PTC thermistors dzikodzere kushandiswa senge kudzivirira mota, zvinhu zvinodziya, uye dziviriro yemagetsi akawanda mumasekete emagetsi.
Sensor yekupisa inomonereka:
Masensa ekupisa anotenderedza anoshandiswa mumidziyo yemagetsi kutarisa tembiricha yemawinding mumamota, matransformer nemimwe michina yemagetsi. Masensa aya akakosha kudzivirira kupisa zvakanyanya uye kuona kuti michina inoshanda zvakachengeteka. Masensa ekupisa anotenderedza anowanzo shandisa maPTC thermistors sezvinhu zvinonzwa tembiricha nekuti ane hunhu hwekuzvigadzirisa ega uye anonyanya kunzwa shanduko dzetembiricha.
Chitofu chePT100:
Iyo PT100 inyanzvi yekuongorora tembiricha yekudzivirira kupisa (RTD) inoshandisa platinum sechinhu chinoona. Kusiyana nePTC thermistors, resistance yePT100 thermistors inowedzera zvakananga netembiricha, zvichitevera hukama hwakajairika hwe resistance-tembiricha hwakatsanangurwa neInternational Electrotechnical Commission (IEC). PT100 thermistors inozivikanwa nekunyatsorongeka kwayo, kugadzikana uye huwandu hwakafara hwekuyera tembiricha, zvichiita kuti ive yakakodzera kushandiswa kwekuyera tembiricha nemazvo.
Thermistor yePT100 ine resistance ye100 ohms pa0°C uye inowedzera neinenge 0.385 ohms padanho rega rega rekuwedzera kwetembiricha. Hukama uhwu hwakareruka pakati pe resistance netembiricha hunobvumira kuyerwa kwetembiricha kwakarurama uye kwakavimbika patembiricha yakakura.
Musiyano uripo pakati pePTC nePT100:
Musiyano mukuru uripo pakati pePTC nePT100 thermistors ndewehunhu hwadzo hwe resistance-tembiricha. PTC thermistors dzinoratidza hukama husina kurongeka hwe resistance-tembiricha ne positive temperature coefficient, nepo PT100 thermistors dzine hukama hwe linear resistance-tembiricha ne near-zero temperature coefficient.
Mumwe musiyano unozivikanwa ndewezvinhu zvinoshandiswa pakuvaka. Mathermistori ePTC anowanzo gadzirwa nezvinhu zveceramic, nepo mathermistori ePT100 achishandisa platinum sechinhu chinoona. Kushandiswa kweplatinum mumathermistori ePT100 kunoita kuti anyatsojeka uye agare zvakanaka, kunyanya munzvimbo dzinoda maindasitiri nemarabhoritari.
kushandiswa:
Mathermistori ePTC anogona kushandiswa kudzivirira kupisa zvakanyanya, zvinhu zvinodziisa zvinodzora magetsi, maseketi anodzikamisa magetsi uye kudzivirira mota. Maitiro avo ekuzvidzora anoita kuti akwanise kushandiswa munzvimbo dzinonyanya kukosha kudzora tembiricha nekudzivirira.
Kune rumwe rutivi, ma thermistors ePT100 anoshandiswa zvakanyanya munzvimbo dzemaindasitiri nedzemarabhoritari kuti vayere tembiricha nemazvo. Anowanzo shandiswa muzvirongwa zvekutarisa tembiricha, makamuri ezvakatipoteredza, masisitimu eHVAC, uye mumashandisirwo ekutsvaga kwesainzi uko kunzwisiswa kwetembiricha kwakarurama uye kwakasimba kwakakosha.
Muchidimbu, kunyangwe zvese zviri zviviri PTC nePT100 thermistors zvichishandiswa pakuona tembiricha, zvine hunhu hwakasiyana uye mashandisirwo azvo akasiyana. PTC thermistors dzinozivikanwa nekuzvidzora uye dzinowanzo shandiswa mumashandisirwo anoda dziviriro yekupisa kwakanyanya uye miganhu yemagetsi. Kune rumwe rutivi, PT100 thermistors dzinopa kunyatsorongeka uye kugadzikana, zvichiita kuti dzikwanise kuyerwa tembiricha chaiyo munzvimbo dzemaindasitiri nedzemarabhoritari. Kunzwisisa mutsauko uripo pakati peaya thermistors kwakakosha pakusarudza sensor yakakodzera zvinodiwa zvako zvekuona tembiricha.
Nguva yekutumira: Kubvumbi-05-2024