Ndeupi musiyano uripo pakati pe thermocouple uye thermal resistance?

Parizvino, thethermocouplesrinoshandiswa pasi rose rine zvakajairwa. Mitemo yepasi rose inotara kuti thermocouples yakakamurwa kuita zvikamu zvisere zvakasiyana, zvinoti B, R, S, K, N, E, J neT, uye tembiricha yakayerwa yakadzikira. Inogona kuyera minus 270 degrees Celsius uye kusvika 1800 degrees Celsius. Pakati pavo, B, R, uye S ndeye platinamu yakatevedzana ye thermocouples. Sezvo platinamu iri simbi yakakosha, inonziwo simbi yakakosha thermocouples uye yakasara inonzi yakachipa Metal thermocouple.

Kune marudzi maviri ethermocouples, yakajairika mhando uye yakashongedzwa mhando.

Zvakajairika thermocouples anowanzo kuve akaumbwa neiyo thermode, inodzivirira chubhu, yekudzivirira sleeve uye junction bhokisi, nepo zvombo thermocouple mubatanidzwa weiyo thermocouple waya, inodzivirira zvinhu uye yesimbi yekudzivirira sleeve. Mubatanidzwa wakasimba unoumbwa nekutambanudza. Asi chiratidzo chegetsi cheiyo thermocouple inoda yakakosha waya kuti ifambise, iyi mhando tambo inonzi muripo waya.
Mhando dzakasiyana dzemagetsi dzinoda waya dzakabhadharisa dzakasiyana, uye chairo chikuru basa ndechekubatana neiyo thermocouple yekuchengetedza kunongedzera kumagumo eiyo thermocouple kure nemagetsi, kuti tembiricha yekupedzisira magumo igadzikane.

Waya dzekubhadhara dzakakamurwa kuita marudzi maviri: rudzi rwemuripo uye rudzi rwekuwedzera
Iyo makemikari akaumbwa eiyo yekuwedzera waya yakafanana neiyo yeiyo thermocouple iri kubhadhariswa, asi mukuita, iyo yekuwedzera waya haina kugadzirwa nezve yakafanana chinhu seye thermocouple. Kazhinji, inotsiviwa newaya iine huwandu hwakaenzana hwemagetsi sethermocouple. Kubatana pakati pewaya yekubhadhara uye thermocouple kunowanzo kujeka. Iyo yakanaka pole ye thermocouple yakabatanidzwa kune tsvuku tsvuku yetambo yekubhadhara, uye danda risina kunaka rinobatanidzwa kune yakasara ruvara.

Mazhinji erweji dzese dzekuripa dzakagadzirwa nendarira-nickel alloy.
Thermocouple ndiyo inonyanyo shandiswa tembiricha mudziyo mukuyera tembiricha. Huru hunhu hwayo hupamhi tembiricha yekuyera renji, kuita kwakadzikama kuita, chimiro chakareruka, mhinduro yakanaka ine simba, uye mutepfenyuro wekushandura anogona kuendesa 4-20mA ano ma sign ari kure. , Zviri nyore kuti otomatiki kuzvidzora uye centralized kuzvidzora.

Nheyo yethermocouplekuyerwa kwekushisa kunobva pane thermoelectric effect. Kubatanidza maconductor maviri akasiyana kana semiconductors mune yakavharwa loop, kana tembiricha pamatanho maviri akasiyana, thermoelectric inogona kugadzirwa muchiuno. Ichi chiitiko chinonzi thermoelectric effect, inozivikanwawo seSeebeck effect. Iyo thermoelectric inogoneka inogadzirwa mune yakavharwa loop inoumbwa nemhando mbiri dzemagetsi anokwanisa; iyo tembiricha mutsauko magetsi anogona uye kusangana nemagetsi kugona.

Kunyangwe kupisa kwekupisa kunoshandiswawo zvakanyanya muindasitiri, kushandiswa kwayo kunogumira nekuda kwekuyerwa kwayo kwekushisa. Iyo tembiricha yekuyera misimboti yekupisa kwekupisa kwakavakirwa pakupokana ukoshi hwe conductor kana semiconductor inochinja nekupisa. hunhu. Iinewo zvakawanda zvakanakira. Inogona zvakare kutumira masaini emagetsi kure. Iine kunzwisiswa kwepamusoro, kugadzikana kwakasimba, kuchinjana uye kunyatsoita. Zvisinei, inoda magetsi uye haigoni kuyera pakarepo kuchinja kwekushisa.

Tembiricha yakayerwa nekupikiswa kwekupisa kunoshandiswa muindasitiri yakadzikira, uye kuyerwa kwekushisa hakudi waya yekuripa, uye mutengo wacho wakachipa.