Plaub txoj cai ntawm thermocouples

Thermocouples yog ua siv cov nyhuv thermoelectric ntawm cov hlau. Lawv muaj feem cuam tshuam nrog cov khoom siv thiab tshuaj lom neeg ntawm cov hlau. Txawv thermocouples sib txawv siv cov ntaub ntawv sib txawv thiab kev sib xyaw rau cov khoom lag luam zoo thiab tsis zoo. Txawm li cas los xij, kev ntsuas thermocouple muaj cov feem ntau, uas yog plaub txoj kev cai ntawm thermoco.

Txoj cai ntawm homogeneous tus neeg coj. Homogeneity txhais tau tias hnav cov ntaub ntawv muaj pes tsawg leeg. Lub voj kaw tau sib sau ua ke ntawm cov khoom siv thermasous yuav tsis muaj peev xwm tsim cov khoom siv thermoelectric tsis hais txog tus thawj coj hla lossis qhov ntsuas kub tau ntsuas. Yog li ntawd, qhov thermocouple yuav tsum muaj ntawm ob homogeneous tus neeg coj ntawm cov khoom sib txawv. Tsis tas li ntawd, yog tias cov khoom siv tsis zoo li qub, ntxiv thermoelectric peev xwm yuav tsim tawm, ua rau muaj kev ntsuas kub tsis raug.

Kev cai lij choj ntawm nruab nrab ntawm kev saib xyuas. Yog tias tus neeg xyuas peb thib peb (Qib Nruab Nrab) txuas nrog tus thawj coj thermocouple, tsuav yog ntev ntawm tus thawj coj ntawm nruab nrab, kev sib txuas ntawm cov qhab nia nruab nrab ntawm qhov ntsuas kub. Nco ntsoov tias tus yuam sij yog tias qhov ntsuas kub ntawm ob qho tib si ntawm tus neeg xyuas pib hauv nruab nrab yuav tsum muaj ua ke. Thaum txuas tus thawj coj peb, peb yuav tsum them sai sai rau qhov chaw kub qhov chaw ntawm ob qho kawg.

Txoj cai ntawm nruab nrab kub. Lub peev xwm thermoeltric ntawm kub thiab txias kawg ntawm thermocouple tsis tuaj yeem hais txog qhov kub thiab txias ntawm qhov chaw sov, tsis yog {1} degree. Qhov kub tiag yog sib npaug nrog tus nqi kub ntawm cov thermoelectric muaj peev xwm saib lub rooj ntxiv rau qhov kub txias. Qhov kev them nyiaj txias kawg peb feem ntau tham txog yog raws li cov ntsiab cai no. Thaum peb ntsuas tiag tiag, peb yuav tsum them sai sai seb qhov txias txias txias yog qhov ruaj khov. Yog tias nws tsis ruaj khov, peb yuav tsum kho nws raws sijhawm, txwv tsis pub nws yuav ua rau ntsuas qhov kub tsis raug.

Kev Siv Lub Chaw Haujlwm. Cov ntaub ntawv siv hluav taws xob yog qhov tshwj xeeb electrode cov khoom, uas yog txawv ntawm cov khoom zoo thiab tsis zoo rau hluav taws xob ntawm thermocouple. Khub cov ntaub ntawv siv hluav taws xob nrog cov hluav taws xob zoo thiab tsis zoo ntawm cov khoom siv thermocouple, tom qab ntawd ntsuas tus nqi ntawm cov nuj nqis ntsuas ntawm ob khub ntawm thermocouples. Txoj cai no feem ntau yog siv rau kev tshawb fawb thiab kev kuaj xyuas cov khoom siv thermocouple, thiab nws tuaj yeem siv tau los nrhiav cov khoom siv thermocouple.