隨著儀表技術的進步
，各種品牌差壓變送器都向著高精度
、智能化方向發展。然而技術的進步為設計者們帶來了一個誤區：renmenzaixuanzebiansongqishi

，wangwangzhuzhongqizishenjingdu，erhushileyingxiangceliangjingdudeqitayinsu。shijishang，yonghuzhenzhengxuyaodeshinenggouzhengquefanyingbeicezhidezhenshizhi——celiangjingdu，erfeibiansongqizishendejingdu。yingxiangbiansongqiceliangjingdudeyinsuhenduo，youxieyinsuhaiyuhuanjingtiaojianjianzhuangfangshixiangguan。yinci，zaishejishi，chanpinzishenjingdubingbunengbaozhengshijideceliangxiaoguo，shejizhemenbudanyaozaixuanxingshikaolvdaoshijihuanjingduichanpinjingdudeyingxiang，yeyaozhuyizaianzhuangshijinliangjianxiaoduibiansongqijingdudeyingxiang。name，douyounaxieyinsuhuiduichayabiansongqizaochengyingxiangne
？yikongjunweidajiazhenglileyixiajidian。

 

 

差cha壓ya變bian送song器qi的de量liang程cheng比bi是shi指zhi在zai滿man足zu精jing度du要yao求qiu的de情qing況kuang下xia變bian送song器qi所suo能neng測ce量liang的de最zui大da值zhi與yu最zui小xiao值zhi的de比bi。一yi般ban情qing況kuang下xia
，量liang程cheng比bi越yue大da，其qi測ce量liang精jing度du就jiu越yue低di , yalibiansongqiliangchengbida，youhenduohaochu，zheyangyitaiyibiaotiaoxiaohou
，keyiyongzaiduogebutongdechanghe。danshishijizhongliangchengbitiaodetaigao
，huidailaihenduoceliangwendingxingdewenti。

 

 

大多數差壓變送器在10:1的量程比範圍內，精度仍為參考精度
，不受量程比的影響。但仍有相當數量的差壓變送器保證參考精度的量程比小於10:1，這一指標甚至還3:1和2:1；且(qie)同(tong)一(yi)型(xing)號(hao)產(chan)品(pin)的(de)不(bu)同(tong)量(liang)程(cheng)代(dai)號(hao)，保(bao)證(zheng)參(can)考(kao)精(jing)度(du)的(de)量(liang)程(cheng)比(bi)也(ye)可(ke)能(neng)出(chu)現(xian)很(hen)大(da)的(de)差(cha)別(bie)，這(zhe)都(dou)是(shi)用(yong)戶(hu)在(zai)計(ji)算(suan)受(shou)量(liang)程(cheng)比(bi)影(ying)響(xiang)後(hou)的(de)精(jing)度(du)時(shi)需(xu)特(te)別(bie)注(zhu)意(yi)的(de)。

 

 

 

差壓變送器在過程應用中
，過程溫度、環huan境jing溫wen度du會hui發fa生sheng很hen大da的de變bian化hua，肯ken定ding會hui與yu變bian送song器qi測ce試shi時shi的de參can考kao條tiao件jian不bu同tong
，這zhe也ye意yi味wei著zhe性xing能neng將jiang與yu所suo介jie紹shao的de參can考kao精jing度du不bu同tong。溫wen度du對dui差cha壓ya變bian送song器qi的de影ying響xiang在zai接jie近jin最zui大da量liang程cheng（即小量程比）時很小，但在接近最小量程（即大量程比）時(shi)影(ying)響(xiang)就(jiu)很(hen)大(da)，有(you)時(shi)甚(shen)至(zhi)超(chao)出(chu)了(le)我(wo)們(men)的(de)想(xiang)象(xiang)。根(gen)據(ju)一(yi)些(xie)產(chan)品(pin)手(shou)冊(ce)提(ti)供(gong)溫(wen)度(du)對(dui)零(ling)點(dian)精(jing)度(du)和(he)量(liang)程(cheng)精(jing)度(du)的(de)綜(zong)合(he)影(ying)響(xiang)公(gong)式(shi)中(zhong)，如(ru)果(guo)輸(shu)入(ru)最(zui)大(da)量(liang)程(cheng)比(bi)為(wei)100，則可以得到接近10%的影響。一些現代智能壓力變送器產品，增加了內部溫度傳感器，用於修正環境溫度變化引起的熱影響。

 

 

 

類似於溫度和量程的影響， 靜(jing)壓(ya)對(dui)變(bian)送(song)器(qi)的(de)零(ling)點(dian)和(he)量(liang)程(cheng)的(de)精(jing)度(du)也(ye)有(you)實(shi)質(zhi)性(xing)影(ying)響(xiang)。如(ru)電(dian)容(rong)式(shi)差(cha)壓(ya)變(bian)送(song)器(qi)，這(zhe)種(zhong)變(bian)送(song)器(qi)在(zai)生(sheng)產(chan)工(gong)藝(yi)係(xi)統(tong)運(yun)行(xing)過(guo)程(cheng)中(zhong)，幾(ji)乎(hu)都(dou)會(hui)受(shou)到(dao)靜(jing)壓(ya)的(de)影(ying)響(xiang)，當(dang)運(yun)行(xing)工(gong)況(kuang)的(de)靜(jing)壓(ya)超(chao)過(guo)一(yi)定(ding)值(zhi)時(shi)
，其(qi)靜(jing)壓(ya)影(ying)響(xiang)的(de)誤(wu)差(cha)將(jiang)超(chao)過(guo)變(bian)送(song)器(qi)本(ben)身(shen)的(de)精(jing)度(du)，對(dui)測(ce)量(liang)通(tong)道(dao)進(jin)行(xing)通(tong)道(dao)精(jing)度(du)計(ji)算(suan)時(shi)，如(ru)果(guo)加(jia)入(ru)靜(jing)壓(ya)影(ying)響(xiang)誤(wu)差(cha)
，則(ze)可(ke)能(neng)無(wu)法(fa)滿(man)足(zu)通(tong)道(dao)精(jing)度(du)要(yao)求(qiu)，因(yin)此(ci)電(dian)容(rong)式(shi)差(cha)壓(ya)變(bian)送(song)器(qi)校(xiao)驗(yan)時(shi)必(bi)須(xu)對(dui)靜(jing)壓(ya)影(ying)響(xiang)進(jin)行(xing)修(xiu)正(zheng)。

 

 

 

安裝傾斜角度是指變送器在安裝到現場之後，變送器中軸線與鉛垂線之間的夾角。

 

chayaceliangshi
，jianceyuanjianshitongguojiancezhongxinceliangmopiandexingbianweiyilaiganzhiliangbianyalichade。youyuzhongxinceliangshineichongmanleguanchongguiyou
，dangchayabiansongqiyanzhechuizhiyuceliangmopianpingmianfangxiangqingxieshi，guanchongguiyoubenshenduiceliangmopianhuichanshengyali，yinqimopianxingbian，daozhishuchuzhidebiandong。erdangchayabiansongqiyanzheyuceliangmopianpingmianpingxingdefangxiangqingxiedeshi，guanchongguiyoujiubuhuiyapoceliangmopian
，yinciwuyingxiang。butongliangchengdebiansongqishouqingxieyingxiangdechengdubutong，liangchengyuexiao，yingxiangyueda；當差壓變送器前傾和後傾時
，其輸出線性和輸出值變化不明顯，不會影響其正常使用

；當差壓變送器左傾或右傾時
，其輸出值將根據傾斜角度發生單方向的漂移，角度越大
，影響越大，但線性不會有明顯變化。

 

 

 

youyugongyexianchangzongtishejidexuyao，chayabiansongqiwangwangbunenganzhuangzaishiyongxianchangdeceliangdianfujin
，ershitongguoyinyaguanyinyadaoyigebijiaojizhongdedifang，yibianyuweihuheguanli，zhejiuhuizaochengceliangdianyuanzhuangdianzhijiancunzaigaoducha，yinyaguanzhongdechuanyajiezhijiuhuiyingaoduchachanshengfujiayali，congerchanshengyingxiang
，yinrenfujiawucha。liuchenggongyeyingyongzhong，youyujiezhidemiduwangwangjiaoda，yincijishishijiaoxiaodegaoducha，yinrudefujiawuchayeshijiaodade。