Dab tsi yog qhov sib txawv ntawm PT1000 tus thermistor thiab pt100 tus thermistor?

PT1 {0 0} yog platinum thermistor, thiab nws cov nqi tiv thaiv kev hloov nrog qhov kub. Tus nqi ntawm 100 tom qab PT qhia tias nws txoj kev tiv thaiv yog 100 ohms ntawm 0 degree thiab kwv yees li ntawm 100 degree. Nws lub hauv paus ntsiab lus ua haujlwm: Thaum PT100 yog nyob ntawm 0 degrees Celsius, nws txoj kev tawm tsam yog 100 ohms, thiab nws txoj kev tiv taus yuav nce ntxiv ntawm ib qho kev sib tw raws li qhov kub thiab txias. Tab sis lawv txoj kev sib raug zoo tsis yog tsuas yog sib npaug, tab sis yuav tsum mus kom ze rau cov nkhaus parabolic.

Nws yog tsuas yog siv nyob rau hauv high-precision cov khoom siv kub xws li kev kho mob, lub cev muaj zog, kev lag luam, kev ntsuas kub, nrog ntau cov ntawv thov.

PT1 {0 0} 0 yog cov platinum thermistor, thiab nws cov nqi tiv thaiv kev hloov nrog qhov kub. Tus nqi ntawm 1000 tom qab PT qhia tias nws txoj kev tiv thaiv yog 1000 ohms ntawm 0 degree thiab kwv yees li 2100 degree. Nws lub hauv paus ntsiab lus ua haujlwm: Thaum PT1000 yog nyob rau 0 degrees Celsius, nws kev tiv taus yog 1000 ohms, thiab nws tsis kam hloov linearly nrog kub. Nws daim ntawv thov ntau npaum li PT100.

Qhov sib txawv ntawm PT100 thiab PT1000
(1) rhiab heev txawv sib txawv. Cov tshuaj tiv thaiv rhiab ntawm PT1 {0 00 00 00 yog siab tshaj qhov ntawm PT100. PT1000 muaj qhov ntsuas kub hloov ntawm ib qib thiab kev tiv thaiv nce lossis txo qis ntawm 3.8 ohms. PT100 muaj qhov ntsuas kub hloov ntawm ib qib thiab kev tiv thaiv nce lossis txo qis ntawm 0.38 ohms

(2) ntsuas qhov ntsuas kub ntau yam sib txawv. PT1000 yog haum rau ntsuas qhov ntsuas kub me me. PT100 yog tsim nyog rau ntsuas me ntsis loj dua ntau

(3) PT1 {{0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 yog tus nqi tsis kam yog ib qho txiaj ntsig yog ib qho txiaj ntsig yog ib qho txiaj ntsig yog sib xws los hloov qhov kub. Kev sib raug zoo ntawm kev tiv thaiv PT1000 thiab ntsuas kub thiab txias yog: Thaum qhov ntsuas kub yog 0 degree, thiab 100 degree, nws tsis kam txog 2120.515 ohms.

Nws muaj lub hauv paus ntsiab lus: Thaum PT1 0 {6}}}}}}}}}}}}}}}}}}}}}}} ohms, thiab nws txoj kev tsis kam yuav nce zuj zus nrog qhov kub. PT100 yog platinum thermistor, thiab nws tus nqi resistor yog ib qho sib xws los hloov qhov kub. Kev sib raug zoo ntawm kev tiv thaiv PT100 thiab ntsuas kub yog: Thaum qhov kub ntawm PT100 yog 0 degree, thiab ntawm 100 degree yog kwv yees li 138.5 Ohms.

Cov nqi tiv thaiv thiab qhov kub ntawm cov thermistor hlau feem ntau yuav yog kwv yees los ntawm kab sib luag hauv qab no: RT} {{{2} {{2} 1+ Rt 0 Yog cov tshuaj tiv thaiv tus nqi tiv thaiv ntawm T0 (feem ntau t 0=0 degree); yog cov ntsuas kub. Cov kev sib raug zoo ntawm tus nqi tiv thaiv ntawm semiconductor sov thiab kub yog rt {{} AB / T, qhov twg RT yog tus nqi tiv thaiv thaum kub t; A. B nyob ntawm qhov kev teeb tsa ntawm cov qauv ntawm cov khoom siv semiconductor.

Piv rau lwm tus, tus cua sov muaj qhov kub tshaj tawm thiab siab dua qhov kev ntsuas kub ntawm chav tsev (feem ntau yog qhov ntsuas kub me me ntawm tsuas yog {}} ~ 300 degree. Lawv tau dav siv rau kev ntsuas kub thiab ntsuas thiab tswj cov khoom siv hauv yim neeg thiab tsheb. Cov cua hlau cov cua nab feem ntau haum rau kev ntsuas kub nyob rau hauv cov ntau ntawm {2}}, cim los ntawm kev ntsuas raug, thiab muaj kev ruaj ntseg zoo. Lawv siv dav hauv cov txheej txheem tswj.