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音叉開關(guān)
QTZP300B音叉物(液)位開關(guān)是利用介質(zhì)對(duì)音叉振動(dòng)的阻尼作用及壓電效應(yīng)的原理進(jìn)行設(shè)計(jì)的,探測料(液)位的傳感部分由音叉構(gòu)成,其本身具有固定的震動(dòng)頻率和振幅振動(dòng),當(dāng)音叉受到介質(zhì)阻尼作用時(shí),音叉停止振動(dòng),由控制電路驅(qū)動(dòng)繼電器發(fā)出開關(guān)信號(hào)。
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音叉的特性
動(dòng)作原理
技術(shù)參數(shù)
音叉的特性
1、具有自動(dòng)學(xué)習(xí)功能,透過按鍵,不需校準(zhǔn),可學(xué)習(xí)不同介質(zhì)密度;
2、全金屬結(jié)構(gòu),堅(jiān)固耐用;
3、叉體振動(dòng)幅度大,振幅可達(dá)10mm以上,可抖落感應(yīng)棒上低粘性的局部掛料,防止誤動(dòng)作;
4、超亮紅色LED燈, 對(duì)現(xiàn)場人員的料位監(jiān)控提供更方便即時(shí)的警示作用;
5、寬廣的交直流電源輸入,不僅可有效降低庫存量,且應(yīng)用范圍更加廣泛;
6、適用于液體、顆粒狀、濃稠狀物質(zhì)的料位監(jiān)測。
動(dòng)作原理
使用壓電晶體元件產(chǎn)生振動(dòng)波,當(dāng)被測介質(zhì)接觸叉體時(shí)即改變音叉的振幅和幅值,由智能控制電路檢測出這一變化,并轉(zhuǎn)變?yōu)橄鄳?yīng)輸出開關(guān)信號(hào), 如:Relay、NPN、PNP。
技術(shù)參數(shù)
1、接續(xù)口規(guī)格:G1-1/2” 2、入線口規(guī)格:M20xP1.5
3、測量介質(zhì):液體/粉體/固體 4、應(yīng)用范圍:通過學(xué)習(xí)功力能,可使用任何粉末、顆粒和液體
5、供電電壓:20~60VDC 20~250VAC 50/60Hz 6、開關(guān)時(shí)間:3s
7環(huán)境溫度:-40~70℃ 8、儲(chǔ)藏溫度:-40~85℃
9、介質(zhì)溫度:-40~150℃ 10、操作壓力:-1~40bar
11、連接方式:G1-1/2”,鑲件,法蘭 12、殼體材質(zhì):鋁合金
13、叉體材質(zhì):不銹鋼304/不銹鋼316繼電器輸出,負(fù)載AC250V/4A,DC60V/4A
14、輸出方式:集電極開路(NPN) 輸出負(fù)載400mA集電極開路(PNP) 輸出, 負(fù)載400mA
15、功耗:直流供電時(shí)3WMax交流供電時(shí)5WMax
16、標(biāo)準(zhǔn)軸規(guī)格長度:240300MAX, 400V 700MAX, 2000V 125. 5
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