Uru Nguzogide Ike efu RT (Ω)
RT na-ezo aka na uru nkwụgide a tụrụ na okpomọkụ T akọwapụtara na-eji ike a tụrụ atụ nke na-ebute mgbanwe na-enweghị atụ na uru nguzogide n'ihe metụtara njehie nha nha.
Mmekọrịta dị n'etiti uru nguzogide na mgbanwe okpomọkụ nke ngwa eletrọnịkị bụ nke a:
RT = RN expB (1/T - 1/TN)
RT: NTC thermistor eguzogide na okpomọkụ T (K).
RN: NTC thermistor eguzogide na okpomọkụ TN (K).
T: Ọnọdụ okpomọkụ akọwapụtara (K).
B: Ihe na-adịgide adịgide nke NTC thermistor, nke a makwaara dị ka index sensitivity thermal.
exp: exponent dabere na nọmba eke e (e = 2.71828…) .
Mmekọrịta ahụ bụ nke siri ike ma nwee ogo nke ziri ezi naanị n'ime oke okpomọkụ nke TN kwadoro ma ọ bụ nguzogide RN, ebe ọ bụ na ihe na-agbanwe agbanwe B bụ n'onwe ya ọrụ nke okpomọkụ T.
Enyere oke nguzogide ike efu R25 (Ω)
Dịka ọkọlọtọ mba si dị, ọnụ ahịa nguzogide efu efu bụ uru nguzogide R25 nke NTC thermistor tụrụ na ntụnyere okpomọkụ nke 25 ℃. Uru nguzogide a bụ uru nkwụghachi ọnụ nke thermistor NTC. Na-emekarị kwuru NTC thermistor ole iguzogide uru, na-ezo aka uru.
Ihe na-adịgide adịgide (ntụgharị uche mmetụta ọkụ) uru B (K)
A kọwapụtara ụkpụrụ B dị ka:
RT1: Nguzogide ike efu na okpomọkụ T1 (K).
RT2: Uru nguzogide ike efu na okpomọkụ T2 (K).
T1, T2: Okpomọkụ abụọ akọwapụtara (K).
Maka ndị na-ekpo ọkụ NTC nkịtị, uru B sitere na 2000K ruo 6000K.
Ọnụọgụ okpomọkụ na-eguzogide ike efu (αT)
Ọnụ ọgụgụ nke mgbanwe mgbanwe na nkwụsi ike efu nke NTC thermistor na okpomọkụ a kapịrị ọnụ na mgbanwe okpomọkụ nke na-akpata mgbanwe ahụ.
αT: ọnụọgụ ọkụ na-eguzogide okpomọkụ na okpomọkụ T (K).
RT: Uru nguzogide ike efu na okpomọkụ T (K).
T: Okpomọkụ (T).
B: Ihe na-adịgide adịgide.
Ọnụọgụ nkesa (δ)
N'otu ọnọdụ okpomọkụ a kapịrị ọnụ, ọnụọgụ nkwụsị nke NTC thermistor bụ nha nke ike gbasasịrị na resistor na mgbanwe okpomọkụ kwekọrọ na resistor.
δ: ọnụọgụ mgbasa nke NTC thermistor, (mW/K).
△ P: Ike nke NTC thermistor (mW) na-eri.
△ T: NTC thermistor na-eri ike △ P, mgbanwe okpomọkụ kwekọrọ na ahụ resistor (K).
Oge okpomọkụ nke ngwa eletrọnịkị (τ)
N'okpuru ọnọdụ efu efu, mgbe okpomọkụ na-agbanwe na mberede, thermistor okpomọkụ na-agbanwe oge achọrọ maka 63.2% nke ọdịiche okpomọkụ abụọ mbụ. Oge okpomọkụ na-adịgide adịgide na-adabere na ike okpomọkụ nke NTC thermistor na n'ụzọ dị iche na ọnụọgụ mgbasa ya.
τ: oge okpomọkụ (S).
C: Ike okpomọkụ nke NTC thermistor.
δ: ọnụọgụ mgbasa nke NTC thermistor.
Enyere ike Pn
The allowable ike oriri nke thermistor na-aga n'ihu na-arụ ọrụ ruo ogologo oge n'okpuru kpọmkwem teknuzu ọnọdụ. N'okpuru ike a, okpomọkụ ahụ na-eguzogide anaghị agafe oke okpomọkụ ọrụ ya.
Okpomọkụ kachasị arụ ọrụTmax: okpomọkụ kachasị elu nke thermistor nwere ike ịrụ ọrụ na-aga n'ihu ruo ogologo oge n'okpuru ọnọdụ teknụzụ akọwapụtara. Ya bụ, T0- Ọnọdụ okpomọkụ.
Ngwa eletrọnịkị tụrụ ike Pm
N'ọnọdụ ọnọdụ okpomọkụ akọwapụtara, enwere ike ileghara uru nkwụgide nke ahụ na-eguzogide ọkụ site na nha nha ugbu a n'ihe metụtara mkpokọta nha nha. A na-achọkarị ka mgbanwe uru nguzogide dị elu karịa 0.1%.
Oge nzipu: Mar-29-2023