Zero Power Resistance Value RT (Ω)
RT inoreva kukosha kwekupokana kuyerwa patembiricha yakatsanangurwa T uchishandisa simba rakapimwa rinokonzera shanduko isingatarisirwi muukoshi hwekuramba hunoenderana nekukanganisa kwekuyera kwese.
Hukama pakati pekupokana kukosha uye shanduko yekushisa yezvikamu zvemagetsi ndeiyi inotevera:
RT = RN expB(1/T – 1/TN)
RT: NTC thermistor kuramba patembiricha T (K).
RN: NTC thermistor kuramba pane yakayerwa tembiricha TN (K).
T: Tembiricha yakatarwa (K).
B: Material kugara kweNTC thermistor, inozivikanwawo se thermal senitivity index.
exp: exponent inoenderana nenhamba chaiyo e (e = 2.71828…) .
Hukama uhwu hune simba uye hune dhigirii rechokwadi chete mukati meyakaganhurirwa tembiricha yakayerwa TN kana yakayerwa kuramba RN, sezvo zvinhu zvinogara zvichiitwa B ibasa retembiricha T.
Yakatemerwa Zero Simba Resistance R25 (Ω)
Zvinoenderana nechiyero chenyika, iyo yakatemerwa zero simba rekudzivirira kukosha ndeyekupokana ukoshi R25 yakayerwa neNTC thermistor patembiricha ye25 ℃. Ukoshi hwekupikisa uku ndiko kukosha kwekupokana kweNTC thermistor. Kazhinji yakati NTC thermistor yakawanda sei kuramba kukosha, zvakare inoreva kukosha.
Material Constant (thermal sensitivity index) B kukosha (K)
B maitiro anotsanangurwa se:
RT1: Zero simba rekudzivirira pakupisa T1 (K).
RT2: Zero simba rekudzivirira kukosha pakupisa T2 (K).
T1, T2: Tembiricha mbiri dzakatsanangurwa (K).
Kune zvakajairwa NTC thermistors, B kukosha kunotangira pa2000K kusvika pa6000K.
Zero Power Resistance Temperature Coefficient (αT)
Chiyero chekuchinja kwehukama mu zero-simba rekudzivirira kweNTC thermistor pane yakatarwa tembiricha kune tembiricha shanduko inokonzera shanduko.
αT: zero simba rekudzivirira tembiricha coefficient pane tembiricha T (K).
RT: Zero simba rekudzivirira kukosha pakupisa T (K).
T: Tembiricha (T).
B: Zvinhu zvisingaperi.
Disipation Coefficient (δ)
Pane yakatarwa ambient tembiricha, the dissipation coefficient yeNTC thermistor ndiyo reshiyo yesimba rakaraswa muresitorendi kune inoenderana tembiricha shanduko yeanopikisa.
δ : disipation coefficient yeNTC thermistor, (mW/ K).
△ P: Simba rinopedzwa neNTC thermistor (mW).
△ T: NTC thermistor inoshandisa simba △ P, iyo inoenderana tembiricha shanduko yeanopikisa muviri (K).
Nguva Yekupisa Inogara Yemagetsi Zvikamu (τ)
Pasi pesimba resimba remamiriro, kana tembiricha yachinja kamwe kamwe, tembiricha ye thermistor inoshandura nguva inodiwa ye63.2% yemhando mbiri dzekutanga dzetembiricha. Nguva yekupisa inoenderana nehuwandu hwekupisa kweNTC thermistor uye inoenderana neyakaganhurirwa kune yayo yekuparadza coefficient.
τ : nguva yekupisa nguva dzose (S).
C: Kupisa kweNTC thermistor.
δ : disipation coefficient yeNTC thermistor.
Rated Power Pn
Iyo inobvumirwa simba rekushandisa ye thermistor mukuenderera kushanda kwenguva yakareba pasi peyakatsanangurwa tekinoroji mamiriro. Pasi pesimba iri, kupisa kwemuviri wekudzivirira hakupfuuri kupisa kwayo kwakanyanya kushanda.
Maximum yekushanda tembirichaTmax: iyo tembiricha yepamusoro iyo thermistor inogona kushanda isingaperi kwenguva yakareba pasi peyakatsanangurwa tekinoroji mamiriro. Kureva, T0- Ambient tembiricha.
Zvigadzirwa zvemagetsi zvinoyera simba Pm
Pane yakataurwa ambient tembiricha, kupikisa kukosha kwemuviri wekupokana unopisa nekuyerwa ikozvino kunogona kuregererwa maererano nekukanganisa kweyero yakazara. Zvinowanzodikanwa kuti kuramba kukosha shanduko yakakura kupfuura 0.1%.
Nguva yekutumira: Mar-29-2023