KIMO壓差變(bian)送器的工作原理

東莞市天驥自動化(hua)(hua)設備有(you)限公(gong)司(si)是一家(jia)專業經營工(gong)控(kong)行(xing)業備件進口的(de)(de)公(gong)司(si)，公(gong)司(si)依托德(de)國分公(gong)司(si)在(zai)歐盟(meng)(meng)區域(yu)常年的(de)(de)采購經驗，與歐盟(meng)(meng)境內3000多個工(gong)控(kong)品牌，5000多家(jia)供(gong)應(ying)商建立起長久的(de)(de)合作，為客(ke)戶提供(gong)100％原(yuan)裝(zhuang)正(zheng)品的(de)(de)工(gong)業產品及零部件的(de)(de)同時(shi)提供(gong)的(de)(de)價(jia)格(ge)及服務。客(ke)戶應(ying)用(yong)領域(yu)包含：汽(qi)車(che)制(zhi)造、軌道交通(tong)、食品制(zhi)藥、環(huan)保(bao)監測(ce)、船舶制(zhi)造、石油電力(li)、機械(xie)紡織、高校、研究所等工(gong)控(kong)自動化(hua)(hua)行(xing)業。

東莞市天驥自動(dong)化(hua)設備(bei)有限公司專業(ye)(ye)經營(ying)進口工(gong)(gong)控行業(ye)(ye)備(bei)件(jian)，為(wei)客戶提(ti)供(gong)100％原裝正品(pin)的工(gong)(gong)業(ye)(ye)產品(pin)及零部件(jian)。德國公司直接采購，歐元交(jiao)易(yi)享受歐盟區(qu)域特殊折扣，報價迅速，垂詢洽談。

壓力(li)變送(song)器被(bei)測(ce)介(jie)質(zhi)的兩(liang)種壓力(li)通入高、低兩(liang)壓力(li)室，作(zuo)用(yong)在(zai)δ元件(jian)(即敏感元件(jian))的兩(liang)側(ce)(ce)隔離(li)膜(mo)(mo)片(pian)(pian)上(shang)(shang)，通過隔離(li)片(pian)(pian)和元件(jian)內的填充液(ye)傳送(song)到(dao)測(ce)量膜(mo)(mo)片(pian)(pian)兩(liang)側(ce)(ce)。測(ce)量膜(mo)(mo)片(pian)(pian)與兩(liang)側(ce)(ce)絕緣片(pian)(pian)上(shang)(shang)的電(dian)(dian)極(ji)各(ge)組(zu)成一個電(dian)(dian)容器。

變(bian)(bian)(bian)送器主(zhu)要有檢測(ce)(ce)(ce)(ce)部(bu)分(fen)和(he)(he)(he)(he)信號轉(zhuan)換及放大處理部(bu)分(fen)組(zu)成(cheng)。檢測(ce)(ce)(ce)(ce)部(bu)分(fen)由(you)檢測(ce)(ce)(ce)(ce)膜(mo)(mo)片(pian)(pian)(pian)和(he)(he)(he)(he)兩側(ce)固定弧(hu)(hu)形板(ban)(ban)組(zu)成(cheng),檢測(ce)(ce)(ce)(ce)膜(mo)(mo)片(pian)(pian)(pian)在壓差(cha)的(de)(de)作(zuo)用(yong)下可(ke)軸向(xiang)移(yi)動,形成(cheng)可(ke)移(yi)動電(dian)(dian)(dian)容(rong)(rong)(rong)極板(ban)(ban),并(bing)和(he)(he)(he)(he)固定弧(hu)(hu)形板(ban)(ban)組(zu)成(cheng)兩個可(ke)變(bian)(bian)(bian)電(dian)(dian)(dian)容(rong)(rong)(rong)器C1和(he)(he)(he)(he)C2,檢測(ce)(ce)(ce)(ce)前,高(gao)、低(di)(di)壓室(shi)壓力平衡,P1 =P2;按結構要求,組(zu)成(cheng)兩可(ke)變(bian)(bian)(bian)電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)固定弧(hu)(hu)形極板(ban)(ban)和(he)(he)(he)(he)檢測(ce)(ce)(ce)(ce)膜(mo)(mo)片(pian)(pian)(pian)對稱,極間(jian)(jian)距相等,C1 =C2。當(dang)被測(ce)(ce)(ce)(ce)壓力P1和(he)(he)(he)(he)P2分(fen)別由(you)導入管(guan)進入高(gao)、低(di)(di)壓室(shi)時(shi),由(you)于P1 >P2隔(ge)離膜(mo)(mo)片(pian)(pian)(pian)中心將發(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)位(wei)移(yi),壓迫電(dian)(dian)(dian)解質(zhi)(zhi)使高(gao)壓側(ce)容(rong)(rong)(rong)積(ji)變(bian)(bian)(bian)小。當(dang)電(dian)(dian)(dian)解質(zhi)(zhi)為不可(ke)壓縮體時(shi),其容(rong)(rong)(rong)積(ji)變(bian)(bian)(bian)化(hua)(hua)量(liang)將引起檢測(ce)(ce)(ce)(ce)膜(mo)(mo)片(pian)(pian)(pian)中心向(xiang)低(di)(di)壓側(ce)位(wei)移(yi),此位(wei)移(yi)量(liang)和(he)(he)(he)(he)隔(ge)離膜(mo)(mo)片(pian)(pian)(pian)中心位(wei)移(yi)量(liang)相等。根據電(dian)(dian)(dian)工(gong)學(xue),當(dang)組(zu)成(cheng)電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)兩極板(ban)(ban)極間(jian)(jian)距發(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)變(bian)(bian)(bian)化(hua)(hua)時(shi),其電(dian)(dian)(dian)容(rong)(rong)(rong)量(liang)也(ye)(ye)將發(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)變(bian)(bian)(bian)化(hua)(hua),即從C1=C2變(bian)(bian)(bian)為C1≠C2。由(you)電(dian)(dian)(dian)氣原理圖可(ke)知,未發(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)位(wei)移(yi)時(shi),I1=I2=0;ι1+ι2=ιc;發(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)位(wei)移(yi)后,由(you)于相對極間(jian)(jian)距發(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)變(bian)(bian)(bian)化(hua)(hua),各極板(ban)(ban)上的(de)(de)積(ji)聚電(dian)(dian)(dian)荷量(liang)也(ye)(ye)發(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)變(bian)(bian)(bian)化(hua)(hua),形成(cheng)電(dian)(dian)(dian)荷位(wei)移(yi),此時(shi)反映出I1≠ I2,兩者(zhe)之間(jian)(jian)將產生(sheng)(sheng)(sheng)電(dian)(dian)(dian)流(liu)差(cha),若檢測(ce)(ce)(ce)(ce)出其值大小以(yi)及和(he)(he)(he)(he)壓差(cha)的(de)(de)關系,即可(ke)求取流(liu)量(liang)。

電容式差(cha)壓(ya)(ya)變送器(qi)(qi)(qi)是20世紀(ji)80年代研制開(kai)發的(de)新型差(cha)壓(ya)(ya)變送器(qi)(qi)(qi),它利用單晶硅諧振傳(chuan)感器(qi)(qi)(qi),采用微電子(zi)表面(mian)加(jia)工技術,除(chu)了(le)保證±0.2%的(de)測量精度外,還可實現(xian)抵制靜壓(ya)(ya)、溫飄(piao)對其(qi)影響。由于配備了(le)低噪聲調制解(jie)調器(qi)(qi)(qi)和開(kai)放式通訊協議,目前的(de)電容式差(cha)壓(ya)(ya)變送器(qi)(qi)(qi)可實現(xian)數字無損耗信號傳(chuan)輸。

差(cha)壓變(bian)送器是(shi)測什(shen)么,壓力變(bian)送器又(you)是(shi)測什(shen)么

壓差變(bian)送器測量(liang)的是兩個(容器內)氣體或(huo)液體的壓強差值(zhi)是一個相對量(liang)

測量(liang)的是單個(容器內)氣體或液體的壓強的大(da)小(xiao)

是個絕對量

從(cong)(cong)使用(yong)來(lai)看，壓(ya)(ya)(ya)(ya)差(cha)(cha)的(de)(de)(de)有兩(liang)個(ge)輸入(ru)管口分別用(yong)于(yu)引(yin)入(ru)兩(liang)個(ge)待測樣(yang)品從(cong)(cong)而得到(dao)(dao)它(ta)們的(de)(de)(de)壓(ya)(ya)(ya)(ya)差(cha)(cha);壓(ya)(ya)(ya)(ya)力(li)的(de)(de)(de)只有一個(ge)管口常用(yong)的(de)(de)(de)是從(cong)(cong)取樣(yang)位(wei)(wei)置引(yin)出表管到(dao)(dao)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)，直接(jie)測量取樣(yang)點的(de)(de)(de)壓(ya)(ya)(ya)(ya)力(li);差(cha)(cha)壓(ya)(ya)(ya)(ya)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)(包括液(ye)位(wei)(wei)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)，流量變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)，差(cha)(cha)壓(ya)(ya)(ya)(ya)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)...)一般(ban)是由(you)取樣(yang)位(wei)(wei)置的(de)(de)(de)兩(liang)根(gen)表管連接(jie)到(dao)(dao)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)膜(mo)盒壓(ya)(ya)(ya)(ya)力(li)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)和(he)差(cha)(cha)壓(ya)(ya)(ya)(ya)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)區別：壓(ya)(ya)(ya)(ya)差(cha)(cha)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)是針(zhen)對(dui)氣(qi)(qi)體(ti)(ti)或(huo)液(ye)體(ti)(ti)的(de)(de)(de)壓(ya)(ya)(ya)(ya)強，單(dan)位(wei)(wei)是帕(pa)斯(si)卡(ka)(pa or bar);壓(ya)(ya)(ya)(ya)力(li)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)一般(ban)也(ye)(ye)是指氣(qi)(qi)體(ti)(ti)液(ye)體(ti)(ti)壓(ya)(ya)(ya)(ya)強，另(ling)別外還有針(zhen)對(dui)壓(ya)(ya)(ya)(ya)力(li)的(de)(de)(de)也(ye)(ye)叫壓(ya)(ya)(ya)(ya)力(li)傳感器(qi)(qi)(qi)(qi)(qi)(qi)(測力(li)傳感器(qi)(qi)(qi)(qi)(qi)(qi))，單(dan)位(wei)(wei)是牛頓或(huo)者(zhe)是千克(ke)(力(li))，或(huo)者(zhe)是噸。壓(ya)(ya)(ya)(ya)差(cha)(cha)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)丈量的(de)(de)(de)是兩(liang)個(ge)(容(rong)器(qi)(qi)(qi)(qi)(qi)(qi)內)氣(qi)(qi)體(ti)(ti)或(huo)液(ye)體(ti)(ti)的(de)(de)(de)壓(ya)(ya)(ya)(ya)強差(cha)(cha)值 是一個(ge)相對(dui)量 ;壓(ya)(ya)(ya)(ya)力(li)變(bian)(bian)送(song)(song)器(qi)(qi)(qi)(qi)(qi)(qi)丈量的(de)(de)(de)是單(dan)個(ge)(容(rong)器(qi)(qi)(qi)(qi)(qi)(qi)內)氣(qi)(qi)體(ti)(ti)或(huo)液(ye)體(ti)(ti)的(de)(de)(de)壓(ya)(ya)(ya)(ya)強的(de)(de)(de)大小(xiao),是個(ge)絕(jue)對(dui)量。從(cong)(cong)使用(yong)來(lai)看，壓(ya)(ya)(ya)(ya)差(cha)(cha)的(de)(de)(de)有兩(liang)個(ge)輸入(ru)管口分別用(yong)于(yu)引(yin)入(ru)兩(liang)個(ge)待測樣(yang)品從(cong)(cong)而得到(dao)(dao)它(ta)們的(de)(de)(de)壓(ya)(ya)(ya)(ya)差(cha)(cha);壓(ya)(ya)(ya)(ya)力(li)的(de)(de)(de)只有一個(ge)管口。