CY-YB-500 應變式壓力傳感器

基于壓(ya)(ya)電(dian)(dian)(dian)效應(ying)的(de)(de)壓(ya)(ya)力傳(chuan)(chuan)(chuan)感(gan)(gan)(gan)器。它的(de)(de)種類和(he)型號繁多，按(an)彈性敏感(gan)(gan)(gan)元件(jian)(jian)(jian)和(he)受力機構的(de)(de)形式(shi)(shi)(shi)可分為膜(mo)片式(shi)(shi)(shi)和(he)活塞(sai)式(shi)(shi)(shi)兩類。膜(mo)片式(shi)(shi)(shi)主要(yao)由(you)本體、膜(mo)片和(he)壓(ya)(ya)電(dian)(dian)(dian)元件(jian)(jian)(jian)組成（見(jian)圖）。壓(ya)(ya)電(dian)(dian)(dian)元件(jian)(jian)(jian)支(zhi)撐于本體上，由(you)膜(mo)片將被測(ce)壓(ya)(ya)力傳(chuan)(chuan)(chuan)遞給壓(ya)(ya)電(dian)(dian)(dian)元件(jian)(jian)(jian)，再(zai)由(you)壓(ya)(ya)電(dian)(dian)(dian)元件(jian)(jian)(jian)輸出與被測(ce)壓(ya)(ya)力成一定關系的(de)(de)電(dian)(dian)(dian)信號(見(jian)壓(ya)(ya)電(dian)(dian)(dian)式(shi)(shi)(shi)傳(chuan)(chuan)(chuan)感(gan)(gan)(gan)器)。這(zhe)種傳(chuan)(chuan)(chuan)感(gan)(gan)(gan)器的(de)(de)特(te)點(dian)是體積(ji)小、動態特(te)性好、耐高溫(wen)等(deng)。現代(dai)測(ce)量(liang)技術對(dui)傳(chuan)(chuan)(chuan)感(gan)(gan)(gan)器的(de)(de)性能出越來越高的(de)(de)要(yao)求。例如用(yong)壓(ya)(ya)力傳(chuan)(chuan)(chuan)感(gan)(gan)(gan)器測(ce)量(liang)繪(hui)制內燃機示(shi)功圖，在(zai)測(ce)量(liang)中不允許用(yong)水冷(leng)卻，并要(yao)求傳(chuan)(chuan)(chuan)感(gan)(gan)(gan)器能耐高溫(wen)和(he)體積(ji)小。壓(ya)(ya)電(dian)(dian)(dian)材料于研制這(zhe)種壓(ya)(ya)力傳(chuan)(chuan)(chuan)感(gan)(gan)(gan)器。比較(jiao)有效的(de)(de)辦法(fa)是選擇適合(he)高溫(wen)條件(jian)(jian)(jian)的(de)(de)石(shi)英(ying)晶(jing)體切(qie)割(ge)方法(fa),例如XYδ（+20°～+30°）割(ge)型的(de)(de)石(shi)英(ying)晶(jing)體可耐350℃的(de)(de)高溫(wen)。而LiNbO3單晶(jing)的(de)(de)居(ju)里點(dian)高達1210℃，是制造高溫(wen)傳(chuan)(chuan)(chuan)感(gan)(gan)(gan)器的(de)(de)理想壓(ya)(ya)電(dian)(dian)(dian)材料。

CY-YB-500 應變式壓力傳感器

基于(yu)壓(ya)(ya)(ya)(ya)(ya)電(dian)效應(ying)的(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)力(li)傳(chuan)感(gan)器(qi)。它的(de)(de)(de)種類和(he)型號繁(fan)多，按彈性(xing)敏感(gan)元件(jian)(jian)和(he)受力(li)機構(gou)的(de)(de)(de)形式(shi)(shi)可(ke)分為(wei)膜(mo)(mo)片式(shi)(shi)和(he)活塞(sai)式(shi)(shi)兩類。膜(mo)(mo)片式(shi)(shi)主要由本(ben)體(ti)(ti)、膜(mo)(mo)片和(he)壓(ya)(ya)(ya)(ya)(ya)電(dian)元件(jian)(jian)組成(cheng)（見圖）。壓(ya)(ya)(ya)(ya)(ya)電(dian)元件(jian)(jian)支撐于(yu)本(ben)體(ti)(ti)上，由膜(mo)(mo)片將被測(ce)(ce)壓(ya)(ya)(ya)(ya)(ya)力(li)傳(chuan)遞給壓(ya)(ya)(ya)(ya)(ya)電(dian)元件(jian)(jian)，再由壓(ya)(ya)(ya)(ya)(ya)電(dian)元件(jian)(jian)輸(shu)出(chu)與被測(ce)(ce)壓(ya)(ya)(ya)(ya)(ya)力(li)成(cheng)一定(ding)關(guan)系的(de)(de)(de)電(dian)信(xin)號(見壓(ya)(ya)(ya)(ya)(ya)電(dian)式(shi)(shi)傳(chuan)感(gan)器(qi))。這種傳(chuan)感(gan)器(qi)的(de)(de)(de)特點(dian)是體(ti)(ti)積小(xiao)、動態特性(xing)好(hao)、耐高(gao)(gao)溫(wen)等。現代測(ce)(ce)量(liang)技(ji)術(shu)對傳(chuan)感(gan)器(qi)的(de)(de)(de)性(xing)能(neng)出(chu)越來(lai)越高(gao)(gao)的(de)(de)(de)要求。例如(ru)用壓(ya)(ya)(ya)(ya)(ya)力(li)傳(chuan)感(gan)器(qi)測(ce)(ce)量(liang)繪(hui)制(zhi)內燃機示功圖，在測(ce)(ce)量(liang)中不允許用水冷卻，并要求傳(chuan)感(gan)器(qi)能(neng)耐高(gao)(gao)溫(wen)和(he)體(ti)(ti)積小(xiao)。壓(ya)(ya)(ya)(ya)(ya)電(dian)材(cai)料于(yu)研制(zhi)這種壓(ya)(ya)(ya)(ya)(ya)力(li)傳(chuan)感(gan)器(qi)。比較有效的(de)(de)(de)辦(ban)法是選擇適合高(gao)(gao)溫(wen)條件(jian)(jian)的(de)(de)(de)石(shi)英(ying)晶(jing)體(ti)(ti)切割(ge)方法,例如(ru)XYδ（+20°～+30°）割(ge)型的(de)(de)(de)石(shi)英(ying)晶(jing)體(ti)(ti)可(ke)耐350℃的(de)(de)(de)高(gao)(gao)溫(wen)。而LiNbO3單晶(jing)的(de)(de)(de)居里點(dian)高(gao)(gao)達1210℃，是制(zhi)造(zao)高(gao)(gao)溫(wen)傳(chuan)感(gan)器(qi)的(de)(de)(de)理想壓(ya)(ya)(ya)(ya)(ya)電(dian)材(cai)料。?