NTC Thermistor Calculators (XIXITRONICS)
Yi ƙididdige ƙimar B ko Zazzabi ta amfani da Equation Steinhart-Hart
Kalkuleta mai ƙimar B
B-darajar zata bayyana anan
Kalkuleta na Steinhart-Hart
Zazzabi zai bayyana a nan
Game da NTC Thermistor
NTC (Negative Temperature Coefficient) thermistors sune na'urori masu auna zafin jiki waɗanda juriyarsu ke raguwa yayin da zafin jiki ke ƙaruwa.
Formula mai darajar B
Ƙimar B tana nuna alaƙar da ke tsakanin juriya da zafin jiki:
B = [ln (R₁/R₂)] / [(1/T₁) - (1/T₂)]
Inda yanayin zafi ya kasance a Kelvin (K = ° C + 273.15)
Daidaiton Steinhart-Hart
Ingantacciyar ƙira don juriya zuwa zafin jiki:
1/T = A + B·ln(R) + C·[ln(R)]³
Inda T yake cikin Kelvin, R shine juriya a cikin ohms, kuma A, B, C sune ƙayyadaddun ƙididdiga ga thermistor.
Hanyar B-darajar tana amfani da samfurin da aka sauƙaƙa wanda ke ɗaukar ƙimar B akai-akai a cikin kewayon zafin jiki. Ma'auni na Steinhart-Hart yana ba da daidaito mafi girma ta amfani da ƙididdiga guda uku waɗanda ke ƙididdige halayen da ba na layi ba.
