技術文章
Technical articles德威爾差壓變送器有(you)哪(na)些(xie)類(lei)型呢(ni)
差壓(ya)變送器主(zhu)要有以下四種類型:
智能(neng)差壓變送(song)器(qi):具備數字化通信(xin)(xin)能(neng)力,能(neng)夠進行遠程信(xin)(xin)號傳(chuan)輸(shu)和(he)調整(zheng)。
高(gao)靜(jing)壓(ya)(ya)差壓(ya)(ya)變送器(qi):能(neng)夠承受較高(gao)的(de)工作壓(ya)(ya)力(li),通常用于測量(liang)高(gao)壓(ya)(ya)力(li)環(huan)境下(xia)的(de)差壓(ya)(ya)變化。
微(wei)差壓變送器:用(yong)于測量微(wei)小的壓力(li)變化,通常(chang)在(zai)低壓或真空環境(jing)下使用(yong)。
遠傳差壓變送器(qi):能夠將遠程信號傳輸到主控制器(qi)或其他設備,以(yi)實現(xian)遠程監控和(he)控制。
微差壓變送器有什么(me)用途及(ji)特點
微差壓(ya)變(bian)送器的幾大智能(neng)特(te)點
微(wei)(wei)差(cha)壓(ya)變(bian)(bian)送(song)器(qi)(qi)(qi)是南京(jing)掘金科技(ji)有(you)(you)限公司引進(jin)(jin)技(ji)術和(he)(he)設(she)備生產的新型變(bian)(bian)送(song)器(qi)(qi)(qi),關(guan)鍵原(yuan)材料,元器(qi)(qi)(qi)件(jian)和(he)(he)零(ling)部(bu)件(jian)均(jun)源自(zi)進(jin)(jin)口(kou),整機經過(guo)嚴格組裝(zhuang)和(he)(he)測(ce)試,微(wei)(wei)差(cha)壓(ya)變(bian)(bian)送(song)器(qi)(qi)(qi)具(ju)有(you)(you)設(she)計原(yuan)理先進(jin)(jin)、品種規(gui)格齊全、安裝(zhuang)使用簡(jian)便等特(te)點。具(ju)體來說,微(wei)(wei)差(cha)壓(ya)變(bian)(bian)送(song)器(qi)(qi)(qi)具(ju)有(you)(you)以(yi)下幾(ji)大智能特(te)點:
1、超級的測(ce)量(liang)性(xing)能,用于(yu)壓力、差壓、液位、流量(liang)測(ce)量(liang)
2、數字(zi)精(jing)度(du):+(-)0.05%模擬精(jing)度(du):+(-)0.75%+(-)0.1%F.S全性能:+(-)0.25F.S
3、穩定性:0.25%60個月(yue)
4、量程(cheng)比:100:1
5、測量(liang)速率:0.2S
6、小型化(2.4kg)全不銹(xiu)鋼法蘭(lan),易于安(an)裝
7、過程連接與其它(ta)產(chan)品兼容,實現最佳測量
8、世(shi)界上一采用(yong)H合金(jin)護套(tao)的傳感器(qi)(技術),實(shi)現了優良的冷、熱穩定性
9、采用16位計(ji)算機(ji)的智能(neng)變(bian)送(song)器(qi)
10、標準4-20mA,帶有基(ji)于HART協議(yi)的(de)數字信號,遠程操控(kong),支持向現(xian)場總線與基(ji)于現(xian)場控(kong)制的(de)技術的(de)升級(ji)。
差壓變送器怎么安裝
1、基本技(ji)術要求:(1)取(qu)壓點處應保證有(you)直管段,兩邊各大(da)于(yu)(yu)5D(管道(dao)(dao)通(tong)經);(2)在(zai)蒸汽管道(dao)(dao)上取(qu)壓時,應在(zai)管道(dao)(dao)的(de)側面安(an)裝(zhuang)(zhuang)引壓管;(3)平衡罐應安(an)裝(zhuang)(zhuang)在(zai)引壓管的(de)最高點處;(4)排污管應在(zai)靠近變送(song)器引壓管連(lian)接處安(an)裝(zhuang)(zhuang);(5)取(qu)壓點與變送(song)器的(de)管道(dao)(dao)距離應大(da)于(yu)(yu)1米;(6)變送(song)器的(de)安(an)裝(zhuang)(zhuang)位(wei)置應低于(yu)(yu)取(qu)壓點的(de)位(wei)置。
2、汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)水(shui)位(wei)(wei)(wei)的(de)(de)(de)(de)(de)(de)安(an)(an)裝(zhuang)(zhuang):汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)水(shui)位(wei)(wei)(wei)測(ce)(ce)量系統(tong)的(de)(de)(de)(de)(de)(de)安(an)(an)裝(zhuang)(zhuang)除滿足國家(jia)和行業有關(guan)標準外,還應(ying)在(zai)如下的(de)(de)(de)(de)(de)(de)安(an)(an)裝(zhuang)(zhuang)中,根(gen)據汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)水(shui)位(wei)(wei)(wei)計(ji)測(ce)(ce)量的(de)(de)(de)(de)(de)(de)特(te)性(xing),加(jia)以(yi)注意,以(yi)保(bao)證(zheng)水(shui)位(wei)(wei)(wei)測(ce)(ce)量儀(yi)表(biao)可(ke)(ke)靠正確(que)運行。(1)?取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)孔(kong)獨(du)(du)立性(xing)原(yuan)則:?每個水(shui)位(wei)(wei)(wei)測(ce)(ce)量裝(zhuang)(zhuang)置都(dou)應(ying)具有獨(du)(du)立的(de)(de)(de)(de)(de)(de)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)孔(kong)。不(bu)(bu)(bu)得在(zai)同一(yi)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)孔(kong)上(shang)并聯多(duo)個水(shui)位(wei)(wei)(wei)測(ce)(ce)量裝(zhuang)(zhuang)置,以(yi)避免(mian)相互(hu)影響,降低水(shui)位(wei)(wei)(wei)測(ce)(ce)量的(de)(de)(de)(de)(de)(de)可(ke)(ke)靠性(xing)。如果(guo)在(zai)同一(yi)個取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)孔(kong)上(shang)并聯2個或(huo)更(geng)多(duo)的(de)(de)(de)(de)(de)(de)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)管(guan)(guan)(guan),其(qi)中一(yi)個平衡(heng)門(men)、一(yi)次門(men)或(huo)排污門(men)泄漏(lou),或(huo)檢修時(shi)(shi)操作不(bu)(bu)(bu)當,極易影響并聯的(de)(de)(de)(de)(de)(de)其(qi)它水(shui)位(wei)(wei)(wei)計(ji)的(de)(de)(de)(de)(de)(de)測(ce)(ce)量,帶來(lai)很大(da)(da)的(de)(de)(de)(de)(de)(de)測(ce)(ce)量誤(wu)(wu)(wu)差,造成(cheng)誤(wu)(wu)(wu)判。若正巧是三(san)冗余邏輯中的(de)(de)(de)(de)(de)(de)一(yi)對,易引發控(kong)制失靈、保(bao)護誤(wu)(wu)(wu)動或(huo)拒(ju)動,存(cun)在(zai)著很大(da)(da)的(de)(de)(de)(de)(de)(de)事故(gu)隱患。當水(shui)位(wei)(wei)(wei)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)點(dian)(dian)不(bu)(bu)(bu)夠(gou)時(shi)(shi)也(ye)不(bu)(bu)(bu)宜采用加(jia)連通(tong)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)方法(fa)增加(jia)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)點(dian)(dian)。采用這種方法(fa)的(de)(de)(de)(de)(de)(de)實(shi)踐(jian)證(zheng)明(ming)(ming),當一(yi)臺差壓(ya)水(shui)位(wei)(wei)(wei)計(ji)排污時(shi)(shi),對其(qi)它差壓(ya)水(shui)位(wei)(wei)(wei)表(biao)計(ji)影響較大(da)(da)。更(geng)不(bu)(bu)(bu)宜在(zai)聯通(tong)管(guan)(guan)(guan)式水(shui)位(wei)(wei)(wei)計(ji)的(de)(de)(de)(de)(de)(de)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)管(guan)(guan)(guan)上(shang)并聯差壓(ya)水(shui)位(wei)(wei)(wei)計(ji),這不(bu)(bu)(bu)僅因為(wei)排污時(shi)(shi)相互(hu)影響,而(er)且(qie)還會附加(jia)不(bu)(bu)(bu)確(que)定(ding)的(de)(de)(de)(de)(de)(de)誤(wu)(wu)(wu)差。當汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)上(shang)水(shui)位(wei)(wei)(wei)測(ce)(ce)量取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)孔(kong)不(bu)(bu)(bu)夠(gou)時(shi)(shi),可(ke)(ke)采用4.5節介(jie)紹的(de)(de)(de)(de)(de)(de)"多(duo)測(ce)(ce)孔(kong)接(jie)管(guan)(guan)(guan)技(ji)術(shu)",在(zai)汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)上(shang)已提(ti)供的(de)(de)(de)(de)(de)(de)大(da)(da)口徑(jing)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)管(guan)(guan)(guan)中插入1~2個取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)技(ji)術(shu)增多(duo)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)點(dian)(dian)。當采用此方法(fa)時(shi)(shi),應(ying)采取(qu)(qu)(qu)(qu)(qu)適當措(cuo)施(shi)防止各個取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)系統(tong)互(hu)相干擾。(2)取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)孔(kong)位(wei)(wei)(wei)置:?取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)孔(kong)位(wei)(wei)(wei)置應(ying)盡量避開汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)內水(shui)、汽(qi)(qi)(qi)工(gong)況不(bu)(bu)(bu)穩(wen)定(ding)區(如安(an)(an)全(quan)閥排氣口、汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)進水(shui)口、下降管(guan)(guan)(guan)口、汽(qi)(qi)(qi)水(shui)分(fen)離(li)器水(shui)槽處等),若不(bu)(bu)(bu)能避開時(shi)(shi),應(ying)在(zai)汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)內取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)口處加(jia)裝(zhuang)(zhuang)穩(wen)流裝(zhuang)(zhuang)置。應(ying)優(you)先選用汽(qi)(qi)(qi)、水(shui)流穩(wen)定(ding)的(de)(de)(de)(de)(de)(de)汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)端(duan)頭的(de)(de)(de)(de)(de)(de)測(ce)(ce)孔(kong)或(huo)將取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)口從汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)內部(bu)引至汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)端(duan)頭。實(shi)踐(jian)證(zheng)明(ming)(ming),汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)端(duan)頭取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)不(bu)(bu)(bu)僅取(qu)(qu)(qu)(qu)(qu)樣(yang)(yang)(yang)(yang)穩(wen)定(ding),而(er)且(qie)停爐后用汽(qi)(qi)(qi)包(bao)(bao)(bao)(bao)壁留(liu)下的(de)(de)(de)(de)(de)(de)水(shui)跡線核(he)對也(ye)說明(ming)(ming)與(yu)水(shui)位(wei)(wei)(wei)計(ji)零位(wei)(wei)(wei)偏差很小。
3、電(dian)容(rong)式差壓(ya)(ya)變(bian)(bian)(bian)送器(qi)(qi)(qi)安裝(zhuang)(zhuang):?電(dian)容(rong)式差壓(ya)(ya)變(bian)(bian)(bian)送器(qi)(qi)(qi)由于其測(ce)量范圍很小(xiao),變(bian)(bian)(bian)送器(qi)(qi)(qi)中傳感元(yuan)件(jian)的(de)自(zi)重即會(hui)影響到(dao)微差壓(ya)(ya)變(bian)(bian)(bian)送器(qi)(qi)(qi)的(de)輸出,因此在(zai)安裝(zhuang)(zhuang)電(dian)容(rong)式差壓(ya)(ya)變(bian)(bian)(bian)送器(qi)(qi)(qi)出現的(de)零位變(bian)(bian)(bian)化情況屬正常情況。安裝(zhuang)(zhuang)時應(ying)使(shi)電(dian)容(rong)式變(bian)(bian)(bian)送器(qi)(qi)(qi)的(de)壓(ya)(ya)力(li)敏(min)感件(jian)軸(zhou)向(xiang)垂直于重力(li)方向(xiang),如果安裝(zhuang)(zhuang)條件(jian)限制(zhi),則應(ying)在(zai)安裝(zhuang)(zhuang)固定后調(diao)整變(bian)(bian)(bian)送器(qi)(qi)(qi)零位到(dao)標準值而滿量程的(de)輸出信號不應(ying)由任何調(diao)整 。