Siv ib lub multimeter los ntsuas tus nqi tsis kam ntawm platinum resistor; Yog hais tias cov zaub qhia infinity (∞) lossis "OL" (Open Loop), nws tuaj yeem txiav txim siab tias qhov qhib Circuit Court tau tshwm sim.
Hais txog koj qhov kev txhawj xeeb txog kev kuaj xyuas qhov qhib qhov hluav taws xob hauv platinum resistor-Kuv nkag siab tias qhov no yuav cuam tshuam rau kev ruaj ntseg ntawm kev ntsuas kub ntawm koj cov kab ntau lawm. Kev ntxhov siab uas los nrog kev txhawj xeeb txog qhov tsis ua haujlwm tam sim ntawd ua rau cov txheej txheem tsis ruaj khov yog tiag tiag; Kev kuaj xyuas kom raug thiab nrawm yog thawj kauj ruam hauv kev ua kom muaj kev tsim khoom txuas ntxiv.
I. Core Diagnostic Method: Multimeter Resistance Measurement
1. Kev npaj
Tshem tawm lub platinum resistor los ntawm qhov ntsuas kub ntsuas lub voj kom tiv thaiv cov kab hluav taws xob sib txuas los ntawm kev cuam tshuam cov txiaj ntsig ntsuas.
Xaiv ib qho digital lossis analog multimeter thiab teeb tsa rau qhov ntsuas qhov ntsuas (xaiv qhov 200Ω lossis 2kΩ ntau yog pom zoo).
2. Kev Ntsuas thiab Kev Ntsuas
Txuas lub multimeter probes mus rau ob lub terminals ntawm lub platinum resistor (rau ob - xov hlau) los yog mus rau terminals A-B thiab A-C (rau peb - xov hlau).
Saib xyuas kev nyeem ntawv:
Yog tias tus nqi tsis kam qhia "∞" lossis "OL" (Open Loop) → Nws tuaj yeem txiav txim siab tias muaj qhov qhib Circuit Court.
Yog hais tias tus nqi kuj nyob ze rau 0Ω → Nws yuav qhia tau hais tias ib tug luv luv Circuit Court.
Yog tias tus nqi tsis kam poob rau hauv qhov tsim nyog (xws li, rau PT100 ntawm chav tsev kub, kwv yees li 100–110Ω) → Nws feem ntau ua haujlwm ib txwm.
Tswv yim: Koj muaj peev xwm hla - hais txog qhov kub thiab txias ambient nrog PT100 calibration table los sib piv rau tus qauv tus nqi thiab ntxiv xyuas qhov tseeb ntawm kev nyeem ntawv.
II. Kev Ntsuas Cov Ntsiab Lus rau Cov Txheej Txheem Sib Txawv
|
Qhov System |
Kev ntsuas ntsuas |
Cov txheej txheem rau Open Circuit Diagnosis |
|
Ob -hlau |
Direct ntsuas kev tiv thaiv hla ob lub terminals |
Resistance tus nqi yog ∞ |
|
Peb -hlau |
Ntsuas A-B, A-C, thiab B-C cais |
A-B lossis A-C nyeem ∞, thaum B-C yuav tsum nyob ze rau 0Ω |
|
Plaub-hlau |
Ntsuas ob pawg tam sim no / voltage coj |
Ib qho qhib Circuit Court nyob rau hauv ib lub teeb qhia tau hais tias ib tug ua tiav qhib Circuit Court |
III. Kev Pabcuam Diagnostic Methods
Kev Ntsuam Xyuas Kev Pom Zoo: Tshawb xyuas seb cov hlau lead puas puas lawm, yog tias cov ntaub thaiv npog puas lawm, los yog muaj cov cim qhia ntawm ya raws lossis corrosion hauv lub thawv davhlau ya nyob twg. Kev Ntsuas Kub Kub: Tuav lub taub hau ntawm koj txhais tes thiab saib seb puas muaj tus nqi tiv thaiv maj mam; Yog tias tsis muaj kev hloov pauv, cov hlau hauv platinum tuaj yeem tawg lossis cov rwb thaiv tsev yuav muaj hnub nyoog.
