Ihe kpatara ngwa thermocouple erughị eru

Dị kathermocoupleindexing nọmba B, S, K, E na ndị ọzọ thermocouple okpomọkụ kwekọrọ na millivolt (MV) uru, n'otu okpomọkụ, na-eme millivolt uru (MV) B index nọmba bụ nke kasị nta, S index nọmba bụ kacha nta, K index. ọnụ ọgụgụ ka ukwuu, E index nọmba bụ nke kasị ukwuu, soro ụkpụrụ a ikpe.

Igwe ọkụ ọkụ nke tozuru oke site na nyocha na nkwenye erughị eru iji. A maghị ihe omume a, o mebeghịkwa ka ndị mmadụ nwee mmasị. Ihe na-erughị eru na ntinye nke thermocouple nke kpatara nkwenye ahụ bụ n'ihi mmetụta nke inhomogeneity nke waya thermocouple, njehie shunt nke thermocouple armored na iji thermocouple na-ekwesịghị ekwesị. Onye nchịkọta akụkọ netwọk mmụta mmụta eletrik na-akọwa ihe omimi ahụ n'isiokwu a.

Mmetụta nke inhomogeneity nke thermocouple waya â' Ihe nkethermocouplebụ inhomogeneous. Mgbe a na -enyocha thermocouple n'ime ụlọ nha, dị ka ụkpụrụ chọrọ si dị, ịdị omimi nke itinye n'ime ọkụ na -enyocha thermocouple bụ 300mm. Yabụ, nsonaazụ nkwenye nke thermocouple ọ bụla nwere ike igosi ma ọ bụ gosikarị eriri ogologo ogologo 300nm site na njedebe. Omume thermoelectric. Otú ọ dị, mgbe ogologo nke thermocouple dị ogologo, ọtụtụ wires nọ na mpaghara oke okpomọkụ n'oge eji ya. Ọ bụrụ na waya thermocouple adịghị mma ma ọ nọ na ọnọdụ nwere gradient okpomọkụ, mgbe ahụ akụkụ ya ga -ewepụta ike thermoelectromotive. Nke a electromotive ike a na -akpọ parasitic potential, na njehie kpatara parasitic nwere na -akpọ homogeneous njehie.

The inhomogeneity nkethermocouplewaya mgbe eji. Banyere ihe emere ọhụrụthermocouple, ọbụlagodi na arụmọrụ dị iche iche na -emezu ihe achọrọ, nhazi na ịgbagọ ugboro ugboro ga -eme ka thermocouple mepụta nrụpụta nhazi, ọ ga -efunahụ ịdị n'otu ya. Ọzọkwa, thermocouple ga -atụfu ịdị n'otu ya mgbe ejiri ya ogologo oge n'okpuru oke okpomọkụ. Mmebi nke ike ọkụ eletrik kpatara mgbanwe ahụ. Mgbe akụkụ nke mmebi ahụ nọ na mpaghara ebe nwere gradient okpomọkụ, ọ ga -ewepụtakwa ike eletriki parasitic nke etinyere na ike thermoelectromotive niile wee gosipụta njehie nha.