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當前位置:首頁技術文章意(yi)大利ELSI變送器的種類特點詳細介紹

意大利ELSI變送器的種類特點詳細介紹

更新時間:2024-05-08點擊次數:104

意(yi)大(da)利ELSI變送器的種類特點詳細介紹(shao)

東莞市天驥自(zi)動化設備有(you)限公(gong)司是(shi)專(zhuan)業(ye)從事工業(ye)自(zi)動化控制(zhi)元(yuan)件市場拓(tuo)展與(yu)銷(xiao)售的(de)公(gong)司,是(shi)歐美(mei)*工業(ye)品牌在(zai)上海的(de)代理經銷(xiao)商。公(gong)司自(zi)成立以來(lai),一直致力于為客戶(hu)專(zhuan)業(ye)化服務,為客戶(hu)提供高(gao)品質的(de)產(chan)品和技術服務是(shi)我們的(de)宗(zong)旨。 銷(xiao)售部: 德國(guo)(guo) REXROTH(力士樂(le))、美(mei)國(guo)(guo) PARKER(派(pai)克)、德國(guo)(guo)BARKSDALE(巴士德)、美(mei)國(guo)(guo) VICKERS(威(wei)格(ge)士)、意大利(li) ATOS(阿托斯(si))、日本(ben) YUKEN(油研(yan))、德國(guo)(guo) HAWE(哈威(wei))、德國(guo)(guo) HYDAC(賀德克)、美(mei)國(guo)(guo) MOOG(穆格(ge))等(deng)公(gong)司液壓(ya)電子產(chan)品。 匯(hui)集了(le)國(guo)(guo)內、香(xiang)港等(deng)地的(de)價格(ge)及庫(ku)存優勢,具(ju)備全面業(ye)務進出口(kou)報(bao)關等(deng)等(deng),貨期穩定、優惠。

我司(si)所售產品均(jun)為原(yuan)裝(zhuang)*!下面(mian)為大家(jia)介(jie)紹下有關于變(bian)送器種類幾大特點如下,我司(si)除了(le)做ELSI變(bian)送器,比如羅斯(si)蒙特變(bian)送器,IFM壓力變(bian)送器等等

變(bian)送(song)(song)(song)器(qi)(qi)(qi)的種類很多,用在工控儀表上(shang)面的變(bian)送(song)(song)(song)器(qi)(qi)(qi)主(zhu)要有溫度變(bian)送(song)(song)(song)器(qi)(qi)(qi),壓(ya)力變(bian)送(song)(song)(song)器(qi)(qi)(qi),流(liu)量變(bian)送(song)(song)(song)器(qi)(qi)(qi),電(dian)流(liu)變(bian)送(song)(song)(song)器(qi)(qi)(qi),電(dian)壓(ya)變(bian)送(song)(song)(song)器(qi)(qi)(qi)等等。

變送器在儀(yi)器、儀(yi)表和工業自動化領域中(zhong)起著舉(ju)足(zu)輕重的(de)作(zuo)用。與傳感器不同(tong),變送器除了(le)能將非(fei)電量(liang)轉換成(cheng)可(ke)測量(liang)的(de)電量(liang)外,一般還具有一定的(de)放(fang)大作(zuo)用。

壓力變送器:

壓(ya)力變(bian)送器也稱(cheng)差變(bian)送器,主要由測(ce)壓(ya)元(yuan)件(jian)傳感器、模塊電路、顯(xian)示表頭、表殼和過程連接件(jian)等組成。它能將接收的(de)氣體(ti)、液體(ti)等壓(ya)力信(xin)號(hao)轉變(bian)成標準的(de)電流電壓(ya)信(xin)號(hao),以供給指(zhi)示報警儀(yi)、記(ji)錄(lu)儀(yi)、調(diao)節(jie)器等二次儀(yi)表進(jin)行測(ce)量、指(zhi)示和過程調(diao)節(jie)。

壓(ya)力(li)變送器測(ce)量原理是:流(liu)程(cheng)壓(ya)力(li)和參考壓(ya)力(li)分別作用(yong)于(yu)集成(cheng)硅壓(ya)力(li)敏感元件的(de)(de)(de)兩端(duan),其差壓(ya)使硅片變形(位(wei)移很(hen)小,僅(jin)μm級(ji)(ji)(ji)),以(yi)(yi)使硅片上用(yong)半(ban)導(dao)體(ti)技(ji)術(shu)制成(cheng)的(de)(de)(de)全動態惠(hui)斯登電(dian)(dian)(dian)(dian)橋在外(wai)部電(dian)(dian)(dian)(dian)流(liu)源驅動下輸(shu)出正比于(yu)壓(ya)力(li)的(de)(de)(de)mV級(ji)(ji)(ji)電(dian)(dian)(dian)(dian)壓(ya)信(xin)(xin)號。由于(yu)硅材料的(de)(de)(de)強性佳,所以(yi)(yi)輸(shu)出信(xin)(xin)號的(de)(de)(de)線(xian)性度及(ji)變差指標均(jun)很(hen)高。工(gong)作時,壓(ya)力(li)變送器將(jiang)被測(ce)物理量轉(zhuan)換(huan)成(cheng)mV級(ji)(ji)(ji)的(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)信(xin)(xin)號,并送往放大(da)倍數很(hen)高而(er)又可以(yi)(yi)互相(xiang)抵消(xiao)溫(wen)度漂移的(de)(de)(de)差動式(shi)放大(da)器。放大(da)后(hou)的(de)(de)(de)信(xin)(xin)號經(jing)電(dian)(dian)(dian)(dian)壓(ya)電(dian)(dian)(dian)(dian)流(liu)轉(zhuan)換(huan)變換(huan)成(cheng)相(xiang)應(ying)(ying)的(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)信(xin)(xin)號,再經(jing)過非(fei)線(xian)性校正,最后(hou)產生與輸(shu)入壓(ya)力(li)成(cheng)線(xian)性對(dui)應(ying)(ying)關系的(de)(de)(de)標準電(dian)(dian)(dian)(dian)流(liu)電(dian)(dian)(dian)(dian)壓(ya)信(xin)(xin)號。

壓力變送(song)器(qi)根據測壓范圍(wei)可分成一(yi)般壓力變送(song)器(qi)(0.001MPa~20MP3)和微差壓變送(song)器(qi)(0~30kPa)兩種。

一體化溫度變送器:

一(yi)(yi)(yi)體化(hua)溫(wen)度變送(song)器(qi)一(yi)(yi)(yi)般由測溫(wen)探頭(熱(re)電(dian)(dian)偶或熱(re)電(dian)(dian)阻傳感器(qi))和兩線(xian)制固體電(dian)(dian)子單元組成。采用(yong)固體模塊(kuai)形式將測溫(wen)探頭直接安裝在接線(xian)盒內,從而形成一(yi)(yi)(yi)體化(hua)的(de)變送(song)器(qi)。一(yi)(yi)(yi)體化(hua)溫(wen)度變送(song)器(qi)一(yi)(yi)(yi)般分為熱(re)電(dian)(dian)阻和熱(re)電(dian)(dian)偶型兩種類型。

熱電阻溫(wen)度變送器是由(you)基(ji)準(zhun)單元、R/V轉(zhuan)(zhuan)換單元、線性(xing)(xing)電路、反接保(bao)護、限流(liu)保(bao)護、V/I轉(zhuan)(zhuan)換單元等組成。測溫(wen)熱電阻信(xin)號轉(zhuan)(zhuan)換放大后,再由(you)線性(xing)(xing)電路對溫(wen)度與電阻的(de)非線性(xing)(xing)關系(xi)進行補償(chang),經V/I轉(zhuan)(zhuan)換電路后輸出一個與被測溫(wen)度成線性(xing)(xing)關系(xi)的(de)4~20mA的(de)恒流(liu)信(xin)號。

熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)溫度變送器(qi)一般(ban)由(you)基準源(yuan)、冷端補(bu)償(chang)(chang)、放(fang)大單(dan)元、線性化處(chu)理、V/I轉(zhuan)換(huan)、斷(duan)(duan)(duan)偶(ou)處(chu)理、反接(jie)保護(hu)(hu)、限流保護(hu)(hu)等(deng)電(dian)(dian)(dian)(dian)(dian)路(lu)單(dan)元組成(cheng)。它是將熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)產生的熱(re)(re)電(dian)(dian)(dian)(dian)(dian)勢(shi)經冷端補(bu)償(chang)(chang)放(fang)大后(hou),再帽由(you)線性電(dian)(dian)(dian)(dian)(dian)路(lu)消除熱(re)(re)電(dian)(dian)(dian)(dian)(dian)勢(shi)與(yu)溫度的非線性誤差,最(zui)后(hou)放(fang)大轉(zhuan)換(huan)為(wei)4~20mA電(dian)(dian)(dian)(dian)(dian)流輸(shu)出信號。為(wei)防止(zhi)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)測量中由(you)于電(dian)(dian)(dian)(dian)(dian)偶(ou)斷(duan)(duan)(duan)絲(si)(si)而使(shi)控溫失效造成(cheng)事故,變送器(qi)中還設有斷(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)保護(hu)(hu)電(dian)(dian)(dian)(dian)(dian)路(lu)。當熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)斷(duan)(duan)(duan)絲(si)(si)或接(jie)解不(bu)良時,變送器(qi)會輸(shu)出最(zui)大值(zhi)(28mA)以使(shi)儀表切斷(duan)(duan)(duan)電(dian)(dian)(dian)(dian)(dian)源(yuan)。

一(yi)體(ti)化溫度(du)變(bian)送器具有結構簡單、節(jie)省引線、輸(shu)出信號大、抗干擾能(neng)力(li)強、線性(xing)好(hao)、顯(xian)示儀表簡單、固體(ti)模(mo)塊(kuai)抗震防潮、有反接保護和(he)限流保護、工作可靠等優點。

一體(ti)化溫度(du)變(bian)送器(qi)的(de)輸出(chu)為統(tong)一的(de)4~20mA信號(hao);可(ke)(ke)與微機(ji)系統(tong)或(huo)其(qi)它常規儀表匹配(pei)使用。也可(ke)(ke)用戶要求(qiu)做成防爆型或(huo)防火型測量儀表。

液位變送器:

1、浮(fu)球(qiu)式(shi)液位(wei)變(bian)送器

浮球(qiu)式液(ye)位變送器由磁性浮球(qiu)、測(ce)量導管、信號單(dan)元(yuan)、電子(zi)單(dan)元(yuan)、接線盒及安(an)裝件組成。

一(yi)般磁性浮(fu)球的(de)比(bi)重小于(yu)0.5,可(ke)(ke)(ke)漂于(yu)液(ye)面之上并(bing)沿測(ce)(ce)量導管上下(xia)移動。導管內(nei)裝有測(ce)(ce)量元件,它可(ke)(ke)(ke)以在(zai)外磁作用下(xia)將被測(ce)(ce)液(ye)位信(xin)(xin)號轉(zhuan)換成(cheng)正(zheng)比(bi)于(yu)液(ye)位變化的(de)電(dian)阻信(xin)(xin)號,并(bing)將電(dian)子單元轉(zhuan)換成(cheng)4~20mA或其它標準信(xin)(xin)號輸出。該變送器為模(mo)塊電(dian)路,具有耐酸、防潮、防震、防腐(fu)蝕等優點,電(dian)路內(nei)部含有恒流反饋電(dian)路和(he)內(nei)保(bao)護(hu)電(dian)路,可(ke)(ke)(ke)使(shi)(shi)輸出最大電(dian)流不(bu)超過(guo)28mA,因而能夠可(ke)(ke)(ke)靠地保(bao)護(hu)電(dian)源并(bing)使(shi)(shi)二(er)次(ci)儀表(biao)不(bu)被損壞。

2、浮簡式液位變送器

浮(fu)(fu)筒式(shi)液(ye)(ye)位變送器(qi)(qi)是(shi)將磁性浮(fu)(fu)球改(gai)為浮(fu)(fu)筒,它(ta)是(shi)根據(ju)阿基米德浮(fu)(fu)力(li)原(yuan)理設計的(de)。浮(fu)(fu)筒式(shi)液(ye)(ye)位變送器(qi)(qi)是(shi)利用微小的(de)金(jin)屬膜應變傳感技術(shu)來測量液(ye)(ye)體的(de)液(ye)(ye)位、界(jie)位或密(mi)度的(de)。它(ta)在工(gong)作(zuo)時(shi)可(ke)以(yi)通過(guo)現場按鍵來進行常(chang)規的(de)設定操作(zuo)

3、靜壓或(huo)液位變(bian)送器

該變(bian)送器(qi)利用(yong)液體靜壓(ya)(ya)力的測(ce)量原理工作(zuo)。它(ta)一(yi)般選用(yong)硅壓(ya)(ya)力測(ce)壓(ya)(ya)傳感器(qi)將(jiang)測(ce)量到的壓(ya)(ya)力轉換成電(dian)信號,再(zai)經放(fang)大(da)(da)電(dian)路放(fang)大(da)(da)和(he)補償電(dian)路補償,最(zui)后(hou)以4~20mA或0~10mA電(dian)流方式輸出。

電容式物位變送器:

電容式(shi)物位變送器適用于工業(ye)企業(ye)在生產過程中(zhong)進行測量和控制生產過程,主要用作(zuo)類導電與(yu)非導電介質的液體液位或粉粒狀固體料(liao)位的遠距離連續測量和指示。

電(dian)(dian)容(rong)(rong)式液位變(bian)(bian)送器(qi)(qi)由(you)電(dian)(dian)容(rong)(rong)式傳感(gan)器(qi)(qi)與電(dian)(dian)子模塊(kuai)(kuai)電(dian)(dian)路組成,它以兩線(xian)(xian)制4~20mA恒(heng)定(ding)電(dian)(dian)流輸(shu)出為基型,經(jing)過轉換,可以用(yong)三線(xian)(xian)或四線(xian)(xian)方式輸(shu)出,輸(shu)出信(xin)號形成為1~5V、0~5V、0~10mA等(deng)標準(zhun)信(xin)號。電(dian)(dian)容(rong)(rong)傳感(gan)器(qi)(qi)由(you)絕緣電(dian)(dian)極(ji)和裝有測(ce)量介(jie)(jie)質(zhi)的(de)(de)(de)圓柱形金屬容(rong)(rong)器(qi)(qi)組成。當料(liao)(liao)位上升時,因(yin)非導電(dian)(dian)物(wu)料(liao)(liao)的(de)(de)(de)介(jie)(jie)電(dian)(dian)常數明顯(xian)小于空氣的(de)(de)(de)介(jie)(jie)電(dian)(dian)常數,所(suo)以電(dian)(dian)容(rong)(rong)量隨著(zhu)物(wu)料(liao)(liao)高度的(de)(de)(de)變(bian)(bian)化而變(bian)(bian)化。變(bian)(bian)送器(qi)(qi)的(de)(de)(de)模塊(kuai)(kuai)電(dian)(dian)路由(you)基準(zhun)源(yuan)、脈寬(kuan)調制、轉換、恒(heng)流放大、反饋和限流等(deng)單元(yuan)(yuan)組成。采用(yong)脈寬(kuan)調特原(yuan)理進行(xing)測(ce)量的(de)(de)(de)優點是(shi)頻(pin)率較低,對周圍元(yuan)(yuan)射頻(pin)干(gan)擾(rao)、穩定(ding)性(xing)(xing)好(hao)、線(xian)(xian)性(xing)(xing)好(hao)、無明顯(xian)溫度漂移(yi)等(deng)。

變送器工作原理是什么(me)

變送器工作(zuo)原(yuan)理(li)如下(xia):

  變送(song)器是中文名字,英文是:TRANSMITTER,顧(gu)名思義,變送(song)器含有(you)“變"和“送(song)"之(zhi)意。

  1、所謂“變(bian)",是指將(jiang)各種從(cong)傳感器(qi)來的物理量(liang),轉變(bian)為一(yi)種電(dian)(dian)信(xin)號(hao)(hao)。比如:利用熱電(dian)(dian)偶,將(jiang)溫度轉變(bian)為電(dian)(dian)勢;利用電(dian)(dian)流(liu)互(hu)感器(qi),將(jiang)大電(dian)(dian)流(liu)轉換為小(xiao)電(dian)(dian)流(liu)。由于電(dian)(dian)信(xin)號(hao)(hao)最(zui)容易處理,所以,現代變(bian)送器(qi),均將(jiang)各種物理信(xin)號(hao)(hao),轉變(bian)成電(dian)(dian)信(xin)號(hao)(hao)。因此,說的變(bian)送器(qi),通(tong)常(chang)都變(bian)成了“電(dian)(dian)"。

  2、所謂(wei)“送",是指(zhi)將各種已變(bian)成的電(dian)信(xin)(xin)號,為了(le)便于其他(ta)儀表(biao)或控制裝置接(jie)收和傳送,又一次通(tong)過(guo)電(dian)子線路,將傳感器來(lai)的電(dian)信(xin)(xin)號,統一化(比如(ru)4-20MA)。方法是通(tong)過(guo)多(duo)個運算(suan)放大器來(lai)實現。這種“變(bian)"+“送",就(jiu)組成了(le)現代(dai)常用(yong)的變(bian)送器。