Tsheb lub cav roj Pauv Cov Rail Rail Siab Hloov Sensor 1875784C92

1.Txhua kev ua haujlwm

The working principle of metal resistance strain gauge is the phenomenon that the strain resistance adsorbed on the base material changes with mechanical deformation, commonly known as resistance strain effect. Tus nqi tiv thaiv tsis kam ntawm cov hlau tus thawj coj tuaj yeem qhia los ntawm cov qauv hauv qab no:

R = ρ

Qhov twg: ρ-resistivity ntawm cov hlau ua tus coj ua (ω / m)

S-- Cross-seem ntawm tus neeg xyuas pib ()

L-ntev ntawm tus neeg xyuas khoom (m)

Cia peb coj lub lim hlau tiv thaiv hlau hlau ua ib qho piv txwv. Thaum hlau xaim yog raug rau sab nraud quab yuam, nws ntev thiab hla-ntu yuav hloov. Los ntawm cov mis saum toj no, nws tuaj yeem pom yooj yim uas nws tus nqi tiv thaiv yuav hloov. Yog tias cov hlau hlau yog ncab los ntawm kev quab yuam sab nraud, nws ntev yuav nce thiab nws qhov chaw hla yuav qis dua, thiab nws tus nqi tiv taus yuav nce ntxiv. Thaum cov xaim hluav taws xob tau compressed los ntawm kev quab yuam sab nraud, qhov ntev txo qis thiab hla kev txo qis txo. Ntev npaum li qhov hloov ntawm cov kev tiv thaiv yog ntsuas (feem ntau yog qhov hluav taws xob hla cov kev tawm tsam), txoj kev sib tw yog tau txais.

2.PrIrip thov

Lub corrosion-resistant ceramic siab sensor tsis muaj kua kis, thiab lub siab ncaj qha ua nyob rau pem hauv ntej ntawm lub ceramragm kom me ntsis deformed. Tuab falm falforsors yog luam tawm ntawm sab tom qab ntawm lub ceramic diaphragm thiab txuas nrog ua tus choj wheatstone (kaw choj). Vim yog cov kab ke piezoresistive ntawm cov piezoresistor, tus choj tsim cov teeb liab uas muaj qhov sib piv rau lub siab thiab kuj sib npaug rau qhov kev ua kom txaus siab. Tus qauv teeb liab yog ntsuas kom zoo li 2.0 / 3.0 / 3.3 MV / V raws li cov kev siab sib txawv. Los ntawm Laser Calibration, lub sensor muaj qhov kub kub ruaj khov thiab lub sijhawm ruaj khov. Lub sensor muaj nws tus kheej qhov kub ntawm kev them tus kheej ntawm 0 ~ 70 ℃ thiab tuaj yeem tiv toj ncaj qha nrog feem ntau cov xov xwm.

Ceramic yog ib qho kev lees paub nrog cov khoom siv elastic, corrosion tsis kam, coj tsis kam, cuam tshuam thiab kev co ua hauj. Lub thermal stability ntawm ceramics thiab nws cov tuab zaj duab xis tsis tuaj yeem ua nws cov haujlwm ua haujlwm siab li-40 ~ 135 ℃, thiab nws muaj qhov raug thiab ruaj khov hauv kev ntsuas. Kev tswj hwm hluav taws xob degree> 2kv, cov zis muaj zog tsoos teeb liab thiab zoo ntev ruaj khov. Ceramic sensors nrog cov yam ntxwv siab thiab tus nqi qis yuav yog kev kawm ntawm cov sensors siab. Hauv Tebchaws Europe thiab Amelikas, muaj ib tug qauv los hloov dua lwm hom ntawm cov sensors. Hauv Suav teb, ntau dua thiab ntau cov neeg siv siv cov confamic sensasing los hloov cov sensor sib txawv.