Multimeter rau kev ntsuas ntawm ib txwm qhib taw tes thiab ib txwm kaw taw tes ntawm lub teeb thaiv
Photoelectric hloov (photoelectric sensor) yog cov ntawv luv ntawm photoelectric sib thooj hloov, nws yog siv cov khoom kuaj pom ntawm lub teeb beam thaiv lossis cuam tshuam, los ntawm synchronous circuit selective circuit, txhawm rau txheeb xyuas qhov muaj lossis tsis muaj khoom. Cov khoom tsis txwv rau cov hlau, txhua yam khoom uas tuaj yeem cuam tshuam lub teeb tuaj yeem kuaj pom. Photoelectric hloov yuav yog cov tswv yim tam sim no nyob rau hauv lub transmitter hloov mus rau lub teeb teeb liab tua, lub receiver thiab tom qab ntawd raws li lub zog ntawm lub teeb tau txais los yog lub xub ntiag los yog tsis muaj lub hom phiaj nrhiav pom. Kev ruaj ntseg systems nyob rau hauv lub hom photoelectric hloov pa taws tswb, kev lag luam feem ntau siv nws los suav tus naj npawb ntawm kev txav ntawm cov neeg kho tshuab caj npab.
Tam sim no ntau lub photoelectric qhib lub teeb uas ib txwm qhib thiab ib txwm kaw cov zis. Nquag qhib thiab ib txwm kaw yog lub xeev tso zis ntawm lub photoelectric hloov thaum tsis hnov qhov khoom. Txhais tau hais tias lub photoelectric hloov nyob rau hauv qhov tsis ua hauj lwm muaj ib txwm qhib cov zis thiab ib txwm kaw cov zis.
Distinguish photoelectric hloov yog ib txwm qhib los yog ib txwm kaw: 1, ib qho kev sib cuag yuav txawv ntawm tus qauv tsis; 2, ntau yam khoom nyob rau tib lub sij hawm muab ib txwm qhib thiab ib txwm kaw ob pawg ntawm kev sib cuag, koj tuaj yeem saib lub logo ntawm qhov hloov; 3, koj tuaj yeem siv multimeter rau kev ntsuas!
Qhov kev sib txuas sib txuas yog ib txwm kaw lossis ib txwm qhib?
1. Peb-xaim DC24V inductive PNP hom: Brown txuas rau +24V, Xiav txuas rau 0V.
Dub DC voltage digital multimeter txuas nrog tus cwj mem liab, cwj mem dub txuas nrog 0V.
Lub sij hawm no lub multimeter muaj 24V voltage yog nquag kaw, tsis muaj 24 volts ib txwm qhib.
2. Peb-xaim DC24V inductive NPN hom: xim av rau +24V, xiav rau 0V.
Dub DC voltage digital multimeter txuas nrog tus cwj mem dub, cwj mem liab txuas nrog +24V.
Lub sijhawm no lub multimeter muaj 24V voltage yog ib txwm kaw, tsis muaj 24 volts ib txwm qhib!
