Galimoto injini mafuta wamba njanji kuthamanga lophimba kachipangizo 1875784C92

1. mfundo ya ntchito

Mfundo yogwira ntchito yazitsulo zolimbana ndi chitsulo ndi chodabwitsa kuti kukana kwachitsulo kumapangidwira pazitsulo zoyambira kumasintha ndi makina osinthika, omwe amadziwika kuti resistance strain effect. Kukana mtengo wa kondakitala zitsulo akhoza kuwonetsedwa ndi chilinganizo zotsatirazi:

R=ρ

Kumene: ρ-resistivity ya kondakitala wachitsulo (ω/m)

S—— Gawo la kondakitala ()

L kutalika kwa kondakitala (m)

Tiyeni titengere chitsanzo cha kukana kwa waya wachitsulo. Pamene waya wachitsulo umagonjetsedwa ndi mphamvu zakunja, kutalika kwake ndi malo ozungulira zidzasintha. Kuchokera pa ndondomeko yomwe ili pamwambayi, zikhoza kuwoneka mosavuta kuti mtengo wake wotsutsa udzasintha. Ngati waya wachitsulo watambasulidwa ndi mphamvu yakunja, kutalika kwake kudzawonjezeka ndipo malo ake ozungulira adzachepa, ndipo kukana kwake kudzawonjezeka. Pamene waya wapanikizidwa ndi mphamvu yakunja, kutalika kumachepa ndipo gawo la mtanda likuwonjezeka, ndipo mtengo wotsutsa umachepa. Malingana ngati kusintha kwa kukana kumayesedwa (kawirikawiri voteji kudutsa kukaniza kumayesedwa), vuto la kupsinjika kwa waya likhoza kupezeka.

2.Kugwiritsa ntchito mfundo

Sensa ya ceramic yosagwira corrosion ilibe kufalikira kwamadzimadzi, ndipo kupanikizika kumachita mwachindunji kutsogolo kwa ceramic diaphragm, zomwe zimapangitsa kuti diaphragm ikhale yopunduka pang'ono. Zotsutsa mafilimu zokhuthala zimasindikizidwa kuseri kwa ceramic diaphragm ndikulumikizidwa kuti apange mlatho wa Wheatstone (mlatho wotsekedwa). Chifukwa cha piezoresistive zotsatira za piezoresistor, mlathowu umapanga chizindikiro champhamvu kwambiri chamagetsi chofanana ndi kuthamanga komanso mofanana ndi mphamvu yamagetsi. Chizindikiro chokhazikika chimayesedwa ngati 2.0/3.0/3.3 mV/V molingana ndi mitundu yosiyanasiyana ya kuthamanga. Kupyolera mu calibration laser, sensa imakhala ndi kutentha kwakukulu komanso kukhazikika kwa nthawi. Sensa ili ndi chiwongola dzanja chake cha kutentha kwa 0 ~ 70 ℃ ndipo imatha kulumikizana mwachindunji ndi media ambiri.

Ceramic ndi chinthu chodziwika bwino chokhala ndi elasticity yayikulu, kukana kwa dzimbiri, kukana kuvala, kukana mphamvu komanso kukana kugwedezeka. Kukhazikika kwamafuta a ceramic ndi kukana kwake kwa filimu yokhuthala kumatha kupangitsa kuti kutentha kwake kukhale kokwera mpaka-40 ~ 135 ℃, ndipo kumakhala kolondola kwambiri komanso kukhazikika pakuyezera. Digiri yamagetsi yamagetsi> 2kV, chizindikiro champhamvu chotulutsa komanso kukhazikika kwanthawi yayitali. Masensa a Ceramic okhala ndi mawonekedwe apamwamba komanso mtengo wotsika adzakhala njira yachitukuko ya masensa opanikizika. Ku Europe ndi America, pali chizolowezi chosinthiratu mitundu ina ya masensa. Ku China, ogwiritsa ntchito ochulukirachulukira amagwiritsa ntchito masensa a ceramic kuti alowe m'malo mwa masensa a silicon.