Kev sib piv ntawm cov siv tau siv tungsten-rhenium thermocouples

Lub thermoelectric muaj peev xwm ntawm tungsten-rhenium thermocouple yog siab dua ntawd platinum-rhodium thermocouple, tab sis qis dua li ntawm Nickel-Chromium Thermocouple. Nws muaj qhov dav ntsuas kub ntsuas ({{}} • 2800 degree) thiab yog feem ntau haum rau kev ntsuas kub hauv lub tshuab nqus tsev, inert thiab txo cov cua. Nws tsis haum rau kev ntsuas kub hauv oxidizing cua tshuab, tab sis nws muaj cov txiaj ntsig zoo rau kev ntsuas nrawm thiab luv luv hauv oxidizing cua. Kev ntsuas tshwj xeeb los tiv thaiv oxidation yog noj rau tungsten-rhenium ob peb xaim, thiab qhov kub tau ntsuas tsis tu ncua hauv oxidizing incospheres. Nws qhov tseeb thiab lub neej yog sib piv rau cov platinum-rhodium khub niam txiv. Piv nrog rau lwm qhov thermocouples, tungsten-rhenium thermocouples ua tau zoo dua thiab tuaj yeem hloov platino thermocouples muaj cov ntawv thov Widest.

Kev rhiab (lossis thermoelectric muaj peev xwm tus nqi) yog hais txog qhov nce (lossis txo qis) hauv thermoelectric muaj peev xwm muaj txiaj ntsig rau txhua qhov kub ntawm qhov ntsuas kub ntawm qhov ntsuas kub. Qhov siab dua qhov kev nkag siab ntawm thermocouple, ntau dua nws ntsuas qhov raug. Qhov rhiab heev ntawm ntau tungsten-rhenium thermocouples nyob rau hauv ntau qhov kub thiab txias li txawv. Qhov rhiab heev ntawm w / w {2}} dua thermocouple yog qhov siab tshaj plaws hauv lwm qhov peb tungsten-rherbo thermocouples. Nyob rau hauv cov ntau ntawm 400 ~ 800 degree, qhov rhiab heev ntawm doped w {8} {{}}} re Thermocouple yog qhov siab tshaj plaws; hauv qhov kub thiab txias ntau ntawm 0 ~ 400 degree, qhov rhiab heev ntawm w {12}}}}} re Thermocouple yog qhov siab tshaj plaws; Thaum qhov ntsuas kub yog siab dua 2000 degree, qhov rhiab heev ntawm w / w {15}} dua thermocouple yog qhov siab tshaj plaws. Qhov rhiab heev ntawm cov siv tungsten-rhenium thermocouples nyob rau hauv cov kev kub siab (siab dua 1200 degree) txo qis ntawm qhov ntsuas kub, uas muaj qhov cuam tshuam tsis zoo rau qhov tseeb ntawm ntsuas kub.