FW737B BN624E957G51
FW737B BN624E957G51
0-52860-2 VSAC
光電檢測方法具有精度高、反應(yīng)快、非接觸等優(yōu)點(diǎn),傳感器的結(jié)構(gòu)簡單,形式靈活多樣,體積小。近年來,隨著光電技術(shù)的發(fā)展,光電傳感器已成為系列產(chǎn)品,其品種及產(chǎn)量日益增加,在各種輕工自動(dòng)機(jī)上獲得廣泛的應(yīng)用。典型案例如下:
(1) 煙塵濁度監(jiān)測儀
防止工業(yè)煙塵污染是環(huán)保的重要任務(wù)之一。為了消除工業(yè)煙塵污染,首先要知道煙塵排放量,因此必須對煙塵源進(jìn)行監(jiān)測、自動(dòng)顯示和超標(biāo)報(bào)警。煙道里的煙塵濁度是用通過光在煙道里傳輸過程中的變化大小來檢測的。如果煙道濁度增加,光源發(fā)出的光被煙塵顆粒的吸收和折射增加,到達(dá)光檢測器的光減少,因而光檢測器輸出信號(hào)的強(qiáng)弱便可反映煙道濁度的變化。
?。?) 光電轉(zhuǎn)速傳感器
在待測轉(zhuǎn)速軸上固定一帶孔的轉(zhuǎn)速調(diào)置盤,在調(diào)置盤一邊由白熾燈產(chǎn)生恒定光,透過盤上小孔到達(dá)光敏二極管組成的光電轉(zhuǎn)換器上,轉(zhuǎn)換成相應(yīng)的電脈沖信號(hào),經(jīng)過放大整形電路輸出整齊的脈沖信號(hào),轉(zhuǎn)速由該脈沖頻率決定。
?。?) 光電池
光電池作為光電探測使用時(shí),其基本原理與光敏二極管相同,但它們的基本結(jié)構(gòu)和制造工藝不完全相同。由于光電池工作時(shí)不需要外加電壓,光電轉(zhuǎn)換效率高,光譜范圍寬,頻率特性好,噪聲低等,它已廣泛地用于光電讀出、光電耦合、光柵測距、激光準(zhǔn)直、電影還音、紫外光監(jiān)視器和燃?xì)廨啓C(jī)的熄火保護(hù)裝置等。
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福州卓凱電子科技有限公司
地址:福州市閩侯西江濱大道77號(hào)正榮潤園一號(hào)樓1205室
大量現(xiàn)貨abb,施耐德等國外多家品牌,產(chǎn)品涉及變頻器,儀器儀表,變送器,可編程控制器plc和人機(jī)界面。
電話:15506917382??? 0591-62182535?
傳真:0591-22989937?? QQ:583745937? 聯(lián)系人:王工
歡迎來電咨詢???????????????????????????
努力造就實(shí)力,態(tài)度決定高度。
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FW737B BN624E957G51
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