Nā Heluhelu Thermistor NTC (XIXITRONICS)

E helu i ka waiwai B a i ʻole ka mahana me ka hoʻohana ʻana i ka Steinhart-Hart Equation

Ka Heluhelu Waiwai-B

Ke kū'ē ma T1 (Ω):

Mahana T1 (°C):

Ke kū'ē ma T2 (Ω):

Mahana T2 (°C):

E ʻike ʻia ka waiwai-B ma aneʻi

Ka Heluhelu Steinhart-Hart

Ke kū'ē i ana ʻia (Ω):

Ka helu helu A:

Ka helu B:

Ka helu C:

E ʻike ʻia ka mahana ma aneʻi

E pili ana i nā Thermistor NTC

ʻO nā thermistors NTC (Negative Temperature Coefficient) he mau mea ʻike mahana nona ke kūpaʻa e emi ana i ka piʻi ʻana o ka mahana.

Haʻilula Waiwai-B

Hōʻike ka waiwai B i ka pilina ma waena o ke kū'ē a me ka mahana:

B = [ln(R₁/R₂)] / [(1/T₁) - (1/T₂)]

ʻO kahi e pono ai ke ana wela ma Kelvin (K = °C + 273.15)

Ka Hoʻohālikelike Steinhart-Hart

ʻO kahi kumu hoʻohālike pololei no ka hoʻololi ʻana i ke kū'ē ʻana i ka mahana:

1/T = A + B·ln(R) + C·[ln(R)]³

Ma kahi o T ma Kelvin, ʻo R ke kū'ē ma ohms, a ʻo A, B, C nā coefficients kikoʻī i ka thermistor.

Hoʻohana ke ʻano waiwai-B i kahi kumu hoʻohālike i hoʻomaʻalahi ʻia e manaʻo nei i kahi waiwai-B mau ma waena o ka pae mahana. Hāʻawi ka hoʻohālikelike Steinhart-Hart i ka pololei kiʻekiʻe ma ka hoʻohana ʻana i ʻekolu mau coefficients e helu ana i ke ʻano non-linear.

Nā Mea Hana