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：人(ren)們(men)在(zai)選(xuan)擇(ze)變(bian)送(song)器(qi)時(shi)，往(wang)往(wang)注(zhu)重(zhong)其(qi)自(zi)身(shen)精(jing)度(du)，而(er)忽(hu)視(shi)了(le)影(ying)響(xiang)測(ce)量(liang)精(jing)度(du)的(de)其(qi)它(ta)因(yin)素(su)。實(shi)際(ji)上(shang)，用(yong)戶(hu)真(zhen)正(zheng)需(xu)要(yao)的(de)是(shi)能(neng)夠(gou)正(zheng)確(que)反(fan)映(ying)被(bei)測(ce)值(zhi)的(de)真(zhen)實(shi)值(zhi)——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
；qietongyixinghaochanpindebutongliangchengdaihao，baozhengcankaojingdudeliangchengbiyekenengchuxianhendadechabie，zhedoushiyonghuzaijisuanshouliangchengbiyingxianghoudejingdushixutebiezhuyide。

 

 

 

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）shiyingxiangjiuhenda，youshishenzhichaochulewomendexiangxiang。genjuyixiechanpinshoucetigongwenduduilingdianjingduheliangchengjingdudezongheyingxianggongshizhong
，ruguoshuruzuidaliangchengbiwei100
，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， jingyaduibiansongqidelingdianheliangchengdejingduyeyoushizhixingyingxiang。rudianrongshichayabiansongqi，zhezhongbiansongqizaishengchangongyixitongyunxingguochengzhong，jihudouhuishoudaojingyadeyingxiang，dangyunxinggongkuangdejingyachaoguoyidingzhishi，qijingyayingxiangdewuchajiangchaoguobiansongqibenshendejingdu，duiceliangtongdaojinxingtongdaojingdujisuanshi，ruguojiarujingyayingxiangwucha
，zekenengwufamanzutongdaojingduyaoqiu，yincidianrongshichayabiansongqixiaoyanshibixuduijingyayingxiangjinxingxiuzheng。

 

 

 

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。

 

差(cha)壓(ya)測(ce)量(liang)時(shi)
，檢(jian)測(ce)元(yuan)件(jian)是(shi)通(tong)過(guo)檢(jian)測(ce)中(zhong)心(xin)測(ce)量(liang)膜(mo)片(pian)的(de)形(xing)變(bian)位(wei)移(yi)來(lai)感(gan)知(zhi)兩(liang)邊(bian)壓(ya)力(li)差(cha)的(de)。由(you)於(yu)中(zhong)心(xin)測(ce)量(liang)室(shi)內(nei)充(chong)滿(man)了(le)灌(guan)充(chong)矽(gui)油(you)
，當(dang)差(cha)壓(ya)變(bian)送(song)器(qi)沿(yan)著(zhe)垂(chui)直(zhi)於(yu)測(ce)量(liang)膜(mo)片(pian)平(ping)麵(mian)方(fang)向(xiang)傾(qing)斜(xie)時(shi)，灌(guan)充(chong)矽(gui)油(you)本(ben)身(shen)對(dui)測(ce)量(liang)膜(mo)片(pian)會(hui)產(chan)生(sheng)壓(ya)力(li)
，引(yin)起(qi)膜(mo)片(pian)形(xing)變(bian)，導(dao)致(zhi)輸(shu)出(chu)值(zhi)的(de)變(bian)動(dong)。而(er)當(dang)差(cha)壓(ya)變(bian)送(song)器(qi)沿(yan)著(zhe)與(yu)測(ce)量(liang)膜(mo)片(pian)平(ping)麵(mian)平(ping)行(xing)的(de)方(fang)向(xiang)傾(qing)斜(xie)的(de)時(shi)
，灌(guan)充(chong)矽(gui)油(you)就(jiu)不(bu)會(hui)壓(ya)迫(po)測(ce)量(liang)膜(mo)片(pian)，因(yin)此(ci)無(wu)影(ying)響(xiang)。不(bu)同(tong)量(liang)程(cheng)的(de)變(bian)送(song)器(qi)受(shou)傾(qing)斜(xie)影(ying)響(xiang)的(de)程(cheng)度(du)不(bu)同(tong)
，量(liang)程(cheng)越(yue)小(xiao)，影(ying)響(xiang)越(yue)大(da)；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。