Dab tsi yog qhov txawv ntawm Liquid Level Sensors?

Ntau hom kua theem sensors muaj xws li:

Optical hom

Capacitive

Kev coj ua

Diaphragm

Float pob hom

1. Optical kua theem sensor

Optical theem keyboards yog khoom. Lawv siv infrared leds thiab phototransistors, uas yog optically ua ke thaum lub sensor nyob hauv huab cua. Thaum qhov kawg sensing yog immersed nyob rau hauv cov kua, lub teeb infrared dim, ua rau cov zis hloov lub xeev. Cov sensors no tuaj yeem kuaj pom qhov muaj lossis tsis muaj cov kua yuav luag. Lawv tsis hnov ​​​​tsw rau ambient lub teeb, tsis cuam tshuam los ntawm npuas hauv huab cua, thiab tsis cuam tshuam los ntawm cov npuas me hauv cov kua. Qhov no ua rau lawv muaj txiaj ntsig zoo hauv cov xwm txheej uas lub xeev hloov pauv yuav tsum tau sau tseg sai thiab ntseeg tau, thiab tuaj yeem ua haujlwm tau zoo rau lub sijhawm ntev yam tsis muaj kev saib xyuas.

Qhov tsis zoo ntawm qhov ntsuas qhov muag pom yog tias nws tsuas tuaj yeem txiav txim siab yog tias muaj cov kua dej tam sim no. Yog tias yuav tsum muaj qib sib txawv, (25%, 50%, 100%, thiab lwm yam) txhua tus yuav tsum muaj lub sensor ntxiv.

2. Capacitive kua theem sensor

Capacitive qib switches siv ob conductors (feem ntau yog ua los ntawm hlau) nyob rau hauv ib tug Circuit Court nrog ib tug luv luv nrug ntawm lawv. Thaum tus neeg xyuas pib nkag rau hauv cov kua, nws ua tiav ib lub voj voog.

Qhov zoo ntawm kev hloov pauv qib capacitive yog tias nws tuaj yeem siv los txiav txim siab qhov nce lossis poob ntawm cov kua hauv lub thawv. Los ntawm kev ua tus neeg xyuas pib qhov siab tib yam li lub thawv, lub peev xwm ntawm cov conductors tuaj yeem ntsuas. Tsis muaj capacitance txhais tau tias tsis muaj kua. Lub capacitor puv txhais tau hais tias lub ntim puv. Koj yuav tsum tau sau qhov "kub" thiab "tag nrho" ntsuas thiab tom qab ntawd ntsuas qhov ntsuas nrog 0% thiab 100% los qhia qib.

Txawm hais tias capacitive qib sensors muaj qhov zoo ntawm tsis muaj qhov txav mus los, ib qho ntawm lawv qhov tsis zoo yog qhov corrosion ntawm tus neeg xyuas pib hloov lub capacitance ntawm tus neeg xyuas pib thiab yuav tsum tau ntxuav lossis rov ua dua. Lawv kuj yog cov rhiab heev rau hom kua siv.

3. Ua kua theem sensor

Ib tug conductive theem hloov yog ib tug sensor nrog ib tug hluav taws xob tiv tauj ntawm ib tug tshwj xeeb theem. Siv ob los yog ntau tshaj insulated conductors nrog exposed inductive xaus nyob rau hauv ib tug yeeb nkab uas nqis mus rau hauv cov kua. Qhov ntev yog nqa qhov tsis tshua muaj hluav taws xob, thaum tus neeg xyuas pib luv luv yog siv los ua kom tiav lub voj voog thaum qib nce.

Zoo li cov qib capacitive keyboards, cov qib hluav taws xob hloov hluav taws xob nyob ntawm seb cov dej conductivity. Yog li ntawd, lawv tsuas yog tsim nyog rau kev ntsuas qee hom kua. Tsis tas li ntawd, cov sensor sensing xaus yuav tsum tau ntxuav tsis tu ncua kom txo cov av.

4. Diaphragm qib sensor

Lub diaphragm lossis pneumatic qib hloov pauv nyob ntawm huab cua siab los thawb lub diaphragm, uas koom nrog micro hloov hauv lub cev ntawm lub cuab yeej. Raws li qib nce, lub siab sab hauv hauv lub raj tshawb pom tau nce mus txog thaum lub microswitch lossis siab sensor tau qhib. Thaum cov kua dej poob qis, cov huab cua siab kuj poob thiab qhov hloov pauv tau raug txiav.

Qhov kom zoo dua ntawm lub diaphragm-raws li qib hloov yog tias tsis tas yuav tsum muaj lub zog hluav taws xob hauv lub tank, nws tuaj yeem siv nrog ntau hom kua, thiab txij li qhov hloov pauv tsis tuaj yeem cuam tshuam nrog cov kua. Txawm li cas los xij, vim nws yog cov cuab yeej siv tshuab, nws yuav xav tau kev saib xyuas lub sijhawm.

5. Float kua theem sensor

Float switch yog thawj theem sensor. Lawv yog cov cuab yeej siv tshuab. Lub hollow ntab yog txuas rau ntawm caj npab. Thaum lub ntab nce thiab ntog hauv cov kua, lub caj npab yog thawb nce thiab nqis. Lub caj npab tuaj yeem txuas nrog lub tshuab sib nqus lossis lub tshuab hluav taws xob los txiav txim siab rau / tawm, lossis nws tuaj yeem txuas nrog lub ntsuas ntsuas uas nce los ntawm tag nrho mus rau qhov khoob raws li qib poob.

Tus kheej kheej float hloov nyob rau hauv lub tso zis tso quav tank yog ib tug heev nquag ntab theem sensor. Cov twj tso kua mis kuj tseem siv cov keyboards ntab ua ib txoj hauv kev zoo los ntsuas cov dej hauv qab daus.

Float keyboards tuaj yeem ntsuas txhua hom kua thiab tuaj yeem tsim los ua haujlwm yam tsis muaj hluav taws xob. Qhov tsis zoo ntawm cov keyboards ntab yog tias lawv loj dua li lwm hom keyboards, thiab vim tias lawv yog cov neeg kho tshuab, lawv yuav tsum tau txais kev pabcuam ntau dua li lwm cov keyboards.