Injini yemotokari yakajairika njanji kudzvanywa switch sensor 1875784C92

1.principle yekushanda

Iyo yekushanda musimboti wesimbi inopikisa strain gauge ndicho chiitiko chekuti dhizaini kuramba yakashambadza pane base zvinhu zvinoshanduka nemechanic deformation, inowanzozivikanwa seresistance strain athari. Iko kukosha kwekupokana kwesimbi conductor inogona kuratidzwa neinotevera fomula:

R=ρ

Ikoko: ρ-resistivity yesimbi conductor (ω/m)

S—— Muchinjikwa-chikamu nzvimbo yekondakita ()

L-kureba kwekondakita (m)

Ngatitorei strain resistance yesimbi wire semuenzaniso. Apo tambo yesimbi inoiswa pasi pesimba rekunze, kureba kwayo uye nzvimbo yepakati-chikamu ichachinja. Kubva pane fomula iri pamusoro, inogona kuoneka nyore kuti kukosha kwayo kwekudzivirira kuchachinja. Kana iyo simbi yesimbi yakatambanudzwa nesimba rekunze, kureba kwayo kuchawedzera uye nzvimbo yaro yepakati-chikamu ichaderera, uye kukosha kwayo kwekudzivirira kuchawedzera. Kana iyo tambo yakamanikidzwa nekunze kwesimba, kureba kunoderera uye chikamu chemuchinjikwa chinowedzera, uye kukosha kwekudzivirira kunoderera. Chero bedzi shanduko yepikisi yakayerwa (kazhinji iyo voltage pamhiri pekupikiswa inoyerwa), iyo strain mamiriro eiyo strain wire inogona kuwanikwa.

2.Principle application

Iyo corrosion-resistant ceramic pressure sensor haina kufambisa kwemvura, uye kudzvanywa kunobata zvakananga pamberi peiyo ceramic diaphragm, zvichiita kuti diaphragm irege kuremara zvishoma. Makobvu emufirimu anopikisa anodhindwa kumashure kweceramic diaphragm uye akabatana kuita bhiriji reWheatstone (zambuko rakavharwa). Nekuda kweiyo piezoresistive mhedzisiro yepiezoresistor, bhiriji rinogadzira yakanyanya linear voltage siginecha inoenderana nekudzvanywa uye zvakare inoenzana neiyo excitation voltage. Chiratidzo chakajairwa chakajairwa se 2.0/3.0/3.3 mV/V zvinoenderana nemhando dzakasiyana dzekumanikidza. Kuburikidza nelaser calibration, iyo sensor ine yakakwira tembiricha kugadzikana uye nguva kugadzikana. Iyo sensor ine yayo tembiricha muripo we 0 ~ 70 ℃ uye inogona kuve yakanangana neakawanda midhiya.

Ceramic chinhu chinozivikanwa chine yakakwira elasticity, corrosion resistance, kupfeka kuramba, kukanganisa kupikisa uye vibration kuramba. Kugadzikana kwekupisa kwekeramics uye bhaisikopo rayo gobvu rinoramba rinogona kuita kuti tembiricha yaro yekushanda ikwire se-40 ~ 135 ℃, uye ine huchokwadi hwepamusoro uye kugadzikana mukuyera. Magetsi insulation degree> 2kV, yakasimba kubuda chiratidzo uye yakanaka kugadzikana kwenguva refu. Ceramic sensors ine yakakwirira hunhu uye yakaderera mutengo ichave iyo yekuvandudza kutungamira kwekumanikidza sensors. MuEurope neAmerica, pane maitiro ekutsiva zvachose mamwe marudzi emasensa. MuChina, vashandisi vakawanda uye vakawanda vanoshandisa ceramic sensors kutsiva diffused silicon pressure sensors.