Thermocouple chinhu chinowanzo shandiswa tembiricha mukuyera tembiricha

- 2021-10-08-

Chekutanga pane zvese, thermocouple chinhu chinowanzo shandiswa tembiricha mukuyera tembiricha. Hunhu hwayo hukuru hwakasiyana hwekuyeresa kutsvoda, kuita kwakadzikama, chimiro chakareruka, yakanaka simba remhinduro, uye inogona kufambisa 4-20mA masaini emagetsi kure, ayo ari nyore kudzora otomatiki. Uye centralized control.
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 pyroelectric effect, inozivikanwawo seSeebeck effect.

Iyo thermoelectric inogona kugadzirwa mune yakavharwa chiuno inoumbwa nemhando mbiri dzemagetsi emagetsi. Thermoelectric kugona uye kuonana kugona. Thermoelectric kugona kunoreva kugona kwemagetsi kunoitwa nemipendero miviri yekondakita mumwe nekuda kwetembiricha dzakasiyana. MaKondakita akasiyana ane akasiyana elektroni densities, saka ivo vanogadzira akasiyana emagetsi mikana. Iyo yekutaurirana inogona kureva kana vaviri vakasarudzika ma conductor vari kusangana.

Nekuda kwavo kuwanda kwema electron kwakasiyana, imwe nhanho yekupararira kwema electron kunoitika. Kana vasvika pane imwe equilibrium, iyo mikana inoumbwa neanogona kusangana inoenderana nezvinhu zvemukati maakondakita maviri akasiyana uye tembiricha yenzvimbo dzavanosangana nadzo. Parizvino, iyothermocouplesinoshandiswa pasirese kuve neyakajairika. Iwo epasi rese anotemerwa thermocouples akapatsanurwa kuita zvikamu zvisere zvakasiyana, zvinoti B, R, S, K, N, E, J uye T, izvo zvinogona kuyera yakaderera tembiricha. Inoyera 270 degrees Celsius pazasi pe zero, uye inogona kusvika pakakwirira kuita 1800 degrees Celsius.

Pakati pavo, B, R, uye S ndeve platinamu yakatevedzanathermocouples. Sezvo platinum iri simbi yakakosha, ivo vanonzi zvakare anokosha esimbi thermocouples uye ayo asara anonzi akaderera-akatemerwa esimbi thermocouples. Kune maviri marudzi e thermocouple zvivakwa, zvakajairika mhando uye zvombo mhando. Kwakajairika thermocouples anowanzo kuve akaumbwa neiyo thermode, inodzivirira chubhu, yekuchengetedza sleeve uye junction bhokisi, nepo yakashongedzwa thermocouple mubatanidzwa weiyo thermocouple waya, kuputira zvinhu uye simbi yekuchengetedza sleeve mushure megungano, mushure mekudhonza Mubatanidzwa wakasimba wakaumbwa nekutambanudza.