Maitiro eThermocouple Sensors Anoshanda
Kana paine maviri akasiyana conductor uye semiconductors A uye B kugadzira loop, uye migumo miviri yakabatana kune imwe neimwe, chero tembiricha pamativi maviri akasiyana, tembiricha yeimwe magumo iT, iyo inonzi kushanda kuguma kana kupisa kunopisa, uye kutonhora kweimwe mugumo ndeye TO , kunonzi kuguma kwekusununguka kana kutonhora kunotonhora, kune ikozvino muchiuno, ndiko kuti, simba re electromotive riripo muchiuno rinonzi thermoelectromotive force.Ichi chiitiko chekugadzira electromotive simba nekuda kwekusiyana kwekushisa kunonzi Seebeck effect.Pane migumisiro miviri yakabatana neSeebeck: kutanga, kana ikozvino inoyerera kuburikidza nekusangana kwevaviri vakasiyana-siyana, kupisa kunobatwa kana kusunungurwa pano (zvichienderana nekutungamira kwezvino), iyo inonzi Peltier effect;Chechipiri, kana ikozvino ichiyerera kuburikidza ne conductor ine tembiricha gradient, kondakita anotora kana kuburitsa kupisa (zvinoenderana nekwazvino kuhama kune tembiricha gradient), inozivikanwa seThomson athari.Iko kusanganiswa kwemaconductor maviri akasiyana kana semiconductors kunonzi thermocouple.
Mashandiro Anoita Resistive Sensors Anoshanda
Kupokana ukoshi hwekondukita kunoshanduka netembiricha, uye tembiricha yechinhu chinoyerwa chinoverengerwa nekuyera kukosha kwekupokana.Iyo sensor inoumbwa neiyi musimboti ndeyekupokana tembiricha sensor, iyo inonyanya kushandiswa kune tembiricha mumhando yekushisa ye -200-500 ° C.Kuyera.Yakachena simbi ndiyo huru yekugadzira zvinhu zvekupisa kupisa, uye zvinhu zvekupisa kupisa zvinofanirwa kuve neanotevera maitiro:
(1) Tembiricha coefficient yekupikisa inofanirwa kuve yakakura uye yakagadzikana, uye panofanirwa kuve nehukama hwakanaka hwemutsara pakati pekupokana nekupisa.
(2) High resistivity, diki kupisa simba uye kukurumidza kuita kukurumidza.
(3) Chigadzirwa chacho chine kugadzirwa kwakanaka uye hunyanzvi, uye mutengo wakaderera.
(4) Iyo kemikari uye yemuviri zvimiro zvakagadzikana mukati meyero yekuyera yekushisa.
Parizvino, platinamu nemhangura ndiyo inonyanya kushandiswa muindasitiri iyi, uye yakagadzirwa kuita yakajairika tembiricha yekuyera kupisa kwekupisa.
Pfungwa pakusarudza tembiricha sensor
1. Kunyangwe mamiriro ezvakatipoteredza echinhu chakayerwa ane chero kukanganisa kune tembiricha yekuyera chinhu.
2. Kana tembiricha yechinhu chakayerwa ichida kurekodhwa, kuvhundutswa uye kudzorwa otomatiki, uye kuti inoda kuyerwa uye kutumirwa kure.3800 100
3. Kana tembiricha yechinhu chakayerwa ichichinja nekufamba kwenguva, ingave iyo lag yetembiricha yekuyera chinhu inogona kuzadzisa tembiricha yekuyera zvinodiwa.
4. Kukura uye kururamisa kweyero yekuyera yekushisa.
5. Kana ukuru hwetembiricha yekuyera chinhu chakakodzera.
6. Mutengo unovimbiswa uye kana zviri nyore kushandisa.
Nzira yekudzivisa nayo kukanganisa
Paunenge uchiisa uye uchishandisa tembiricha sensor, zvinotevera zvikanganiso zvinofanirwa kudzivirirwa kuti ive nechokwadi chekuyerwa kwakanakisa.
1. Zvikanganiso zvinokonzerwa nekuiswa kusina kunaka
Semuenzaniso, nzvimbo yekuisa uye yekuisa kudzika kweiyo thermocouple haigone kuratidza tembiricha chaiyo yechoto.Mune mamwe mazwi, iyo thermocouple haifanirwe kuisirwa padyo nemusuwo uye kudziyisa, uye kudzika kwekuisa kunofanirwa kunge kuri 8 kusvika 10 nguva yedhayamita yechubhu yekudzivirira.
2. Thermal resistance error
Kana kutonhora kuchikwira, kana pane jira remarasha pachubhu yekudzivirira uye guruva rinosungirirwa pairi, kupisa kwekushisa kuchawedzera uye kunodzivisa kufambisa kwekupisa.Panguva ino, kukosha kwechiratidzo chekushisa kwakaderera kudarika kukosha kwechokwadi kwekushisa kwakayerwa.Naizvozvo, kunze kweiyo thermocouple yekudzivirira chubhu inofanirwa kuchengetwa yakachena kuderedza zvikanganiso.
3. Zvikanganiso zvinokonzerwa nekudzivirira kusina kunaka
Kana iyo thermocouple yakavharidzirwa, tsvina yakawandisa kana munyu slag pachubhu yekudzivirira uye waya yekudhirowa bhodhi inotungamira kune yakashata insulation pakati peiyo thermocouple nemadziro echoto, iyo yakanyanya kuoma pakupisa kwakanyanya, izvo zvisingazokonzereri kurasikirwa kwe thermoelectric kugona asiwo kuunza kupindira.Iko kukanganisa kunokonzerwa neizvi dzimwe nguva kunogona kusvika kuBaidu.
4. Zvikanganiso zvakaunzwa ne thermal inertia
Mhedzisiro iyi inonyanya kutaurwa pakuita kuyerwa nekukurumidza nekuti kupisa kwekushisa kwe thermocouple kunoita kuti kukosha kwemamita kwakatarwa kusaririra kuseri kwekushanduka kwetembiricha iri kuyerwa.Naizvozvo, thermocouple ine yakaonda thermal electrode uye dhayamita diki yechubhu yekudzivirira inofanira kushandiswa zvakanyanya sezvinobvira.Kana tembiricha yekuyera nharaunda ichibvumidza, iyo inodzivirira chubhu inogona kubviswa.Nekuda kwekuyera kuyerwa, iyo amplitude yekushanduka kwetembiricha yakaonekwa neiyo thermocouple idiki pane iyo yekushanduka kwekushisa kwechoto.Iyo yakakura kuyerwa kweyero, idiki iyo amplitude ye thermocouple kuchinja uye yakakura mutsauko kubva kune chaiyo tembiricha yevira.
Nguva yekutumira: Nov-24-2022