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  • 鎧裝熱電阻選擇方法

    根(gen)據測(ce)溫范圍(wei)選(xuan)(xuan)擇:500℃以(yi)(yi)上(shang)一(yi)(yi)般選(xuan)(xuan)擇熱(re)(re)電(dian)(dian)(dian)偶,500℃以(yi)(yi)下一(yi)(yi)般選(xuan)(xuan)擇熱(re)(re)電(dian)(dian)(dian)阻;根(gen)據測(ce)量精(jing)(jing)度(du)(du)選(xuan)(xuan)擇:對精(jing)(jing)度(du)(du)要(yao)(yao)求較高(gao)(gao)選(xuan)(xuan)擇熱(re)(re)電(dian)(dian)(dian)阻,對精(jing)(jing)度(du)(du)要(yao)(yao)求不(bu)高(gao)(gao)選(xuan)(xuan)擇熱(re)(re)電(dian)(dian)(dian)偶;根(gen)據測(ce)量范圍(wei)選(xuan)(xuan)擇:熱(re)(re)電(dian)(dian)(dian)偶所(suo)測(ce)量的(de)一(yi)(yi)般指“點”溫,熱(re)(re)電(dian)(dian)(dian)阻所(suo)測(ce)量的(de)一(yi)(yi)般指空間平(ping)均溫度(du)(du);2線制熱(re)(re)電(dian)(dian)(dian)阻配線簡(jian)單(dan),但要(yao)(yao)帶進引(yin)(yin)線電(dian)(dian)(dian)阻的(de)附加(jia)誤差。因此不(bu)適(shi)用(yong)制造*精(jing)(jing)度(du)(du)的(de)熱(re)(re)電(dian)(dian)(dian)阻,且在(zai)(zai)使用(yong)時引(yin)(yin)線及導線都不(bu)宜過長。線制可以(yi)(yi)消除(chu)引(yin)(yin)線電(dian)(dian)(dian)阻的(de)影響(xiang),測(ce)量精(jing)(jing)度(du)(du)高(gao)(gao)于2線制。作為過程檢測(ce)元件線制不(bu)僅可以(yi)(yi)消除(chu)引(yin)(yin)線電(dian)(dian)(dian)阻的(de)影響(xiang),而且在(zai)(zai)連接(jie)導線阻值相同時,還可以(yi)(yi)消除(chu)該電(dian)(dian)(dian)阻的(de)影...
    技術文章
    2020-01-12
  • 磁翻板液位計的使用方法

    磁翻板液(ye)位(wei)計位(wei)計可(ke)直(zhi)接(jie)(jie)用來(lai)觀(guan)察(cha)各種容(rong)器(qi)(qi)(qi)內(nei)(nei)介質的(de)液(ye)位(wei)高(gao)(gao)度。它適用于石油、化工等工業領(ling)域的(de)液(ye)位(wei)指(zhi)示,該液(ye)位(wei)計結構簡(jian)(jian)單(dan),觀(guan)察(cha)直(zhi)觀(guan)、清晰,不(bu)堵(du)塞、不(bu)滲漏,安裝(zhuang)(zhuang)方便,維(wei)修簡(jian)(jian)單(dan)。玻(bo)璃(li)板液(ye)位(wei)計上、下(xia)(xia)端安裝(zhuang)(zhuang)法蘭與(yu)容(rong)器(qi)(qi)(qi)相連(lian)接(jie)(jie)構成連(lian)通器(qi)(qi)(qi),透過玻(bo)璃(li)板可(ke)直(zhi)接(jie)(jie)觀(guan)察(cha)到容(rong)器(qi)(qi)(qi)內(nei)(nei)液(ye)位(wei)的(de)實(shi)際高(gao)(gao)度。上下(xia)(xia)閥門裝(zhuang)(zhuang)有(you)安全(quan)鋼(gang)珠,當玻(bo)璃(li)因意外(wai)損壞(huai)時,鋼(gang)珠在容(rong)器(qi)(qi)(qi)內(nei)(nei)壓(ya)的(de)作(zuo)用下(xia)(xia)自動密封,防(fang)止容(rong)器(qi)(qi)(qi)內(nei)(nei)液(ye)體外(wai)溢,并保證操作(zuo)人員(yuan)安全(quan)。該儀表可(ke)用于各種塔、罐、槽、球(qiu)型容(rong)器(qi)(qi)(qi)和鍋爐等設備的(de)介質液(ye)位(wei)檢測(ce)。磁翻板液(ye)位(wei)計位(wei)計可(ke)直(zhi)接(jie)(jie)用來(lai)觀(guan)察(cha)各種容(rong)器(qi)(qi)(qi)內(nei)(nei)...
    技術文章
    2020-01-12
  • 天康雷達物位計不同應用場合的各自特點分析

    天(tian)康雷達(da)物(wu)位(wei)計(ji)(ji)的(de)(de)天(tian)線(xian)發(fa)射(she)(she)極窄的(de)(de)微波脈(mo)(mo)沖(chong)(chong)(chong)(如頻率雷達(da),即發(fa)送一(yi)(yi)個△t時(shi)間(jian)(jian)(jian)(jian)的(de)(de)脈(mo)(mo)沖(chong)(chong)(chong),疊加6GHZ的(de)(de)正(zheng)弦(xian)波信號),這個脈(mo)(mo)沖(chong)(chong)(chong)以光速在(zai)空間(jian)(jian)(jian)(jian)傳播,碰到(dao)被(bei)(bei)(bei)測(ce)(ce)介(jie)(jie)質表面(mian),其部分(fen)能量(liang)被(bei)(bei)(bei)反射(she)(she)回來,被(bei)(bei)(bei)同(tong)(tong)一(yi)(yi)天(tian)線(xian)接收(shou)。發(fa)射(she)(she)脈(mo)(mo)沖(chong)(chong)(chong)與接收(shou)脈(mo)(mo)沖(chong)(chong)(chong)的(de)(de)時(shi)間(jian)(jian)(jian)(jian)間(jian)(jian)(jian)(jian)隔與天(tian)線(xian)到(dao)被(bei)(bei)(bei)測(ce)(ce)介(jie)(jie)質表面(mian)的(de)(de)距離成正(zheng)比。由于(yu)其發(fa)射(she)(she)脈(mo)(mo)沖(chong)(chong)(chong)與接收(shou)脈(mo)(mo)沖(chong)(chong)(chong)的(de)(de)時(shi)間(jian)(jian)(jian)(jian)間(jian)(jian)(jian)(jian)隔非常小,一(yi)(yi)般都采(cai)用時(shi)間(jian)(jian)(jian)(jian)拓展技(ji)術,并采(cai)用多次測(ce)(ce)量(liang)求(qiu)平均的(de)(de)方法獲得終(zhong)結果;這種測(ce)(ce)量(liang)技(ji)術決定了其精度為5-10mm。天(tian)康雷達(da)物(wu)位(wei)計(ji)(ji)的(de)(de)不同(tong)(tong)應用場合特點分(fen)析:1.半(ban)導體行業(ye)生產環節:硅微粉倉;工況特點:很(hen)低(di)...
    技術文章
    2019-12-14
  • 壓力式溫度計的主要組成及原理解析

    壓(ya)力(li)式(shi)溫(wen)(wen)度(du)計(ji)是(shi)目前使(shi)用范圍廣、性能(neng)全面的(de)(de)(de)(de)一種機(ji)(ji)械式(shi)測溫(wen)(wen)儀表。廣泛應(ying)用于機(ji)(ji)械、輕紡、化(hua)(hua)工、制(zhi)藥、食品行業(ye)對生(sheng)產過程中的(de)(de)(de)(de)溫(wen)(wen)度(du)測量和(he)控制(zhi)。壓(ya)力(li)式(shi)溫(wen)(wen)度(du)計(ji)的(de)(de)(de)(de)技術(shu)原理是(shi)基(ji)于密閉(bi)測溫(wen)(wen)系統內(nei)蒸(zheng)(zheng)發液體的(de)(de)(de)(de)飽(bao)和(he)蒸(zheng)(zheng)氣壓(ya)力(li)和(he)溫(wen)(wen)度(du)之間的(de)(de)(de)(de)變(bian)化(hua)(hua)關系,而(er)進行溫(wen)(wen)度(du)測量的(de)(de)(de)(de)。當溫(wen)(wen)包感受到溫(wen)(wen)度(du)變(bian)化(hua)(hua)時,密閉(bi)系統內(nei)飽(bao)和(he)蒸(zheng)(zheng)氣產生(sheng)相應(ying)的(de)(de)(de)(de)壓(ya)力(li),引起彈性元件曲率的(de)(de)(de)(de)變(bian)化(hua)(hua),使(shi)其自由端(duan)產生(sheng)位移(yi),再(zai)由齒(chi)輪放大機(ji)(ji)構把位移(yi)變(bian)為(wei)指示(shi)值,這種溫(wen)(wen)度(du)計(ji)具有溫(wen)(wen)包體積小(xiao),反應(ying)速度(du)快、靈敏(min)度(du)高、讀(du)數直觀等特點。幾(ji)乎集合了玻璃棒(bang)溫(wen)(wen)度(du)計(ji)、雙金屬溫(wen)(wen)度(du)計(ji)、氣體壓(ya)...
    技術文章
    2019-11-04
  • 講解下高溫防腐型壓力變送器的常見故障

    高(gao)溫(wen)防(fang)腐型(xing)壓(ya)力(li)變(bian)(bian)送(song)器(qi)屬于壓(ya)力(li)儀表(biao)的(de)一(yi)種(zhong),是現(xian)場安(an)裝(zhuang)的(de)壓(ya)力(li)變(bian)(bian)送(song)及(ji)顯(xian)示單元,采(cai)用(yong)(yong)二(er)線制傳送(song)方式,將壓(ya)力(li)的(de)非線性信號,放(fang)大變(bian)(bian)換成標準的(de)4-20mA標準信號,同時(shi)可(ke)以就(jiu)地(di)顯(xian)示(LED或LCD)壓(ya)力(li)。本(ben)(ben)變(bian)(bian)送(song)器(qi)采(cai)用(yong)(yong)本(ben)(ben)安(an)防(fang)爆結(jie)構,使(shi)用(yong)(yong)更(geng)(geng)安(an)全(quan)。貼(tie)片(pian)制作,耐(nai)溫(wen)、耐(nai)濕、抗(kang)(kang)震(zhen)。結(jie)構小巧(qiao)緊湊,微功能,易安(an)裝(zhuang)。微弱(ruo)信號就(jiu)近(jin)變(bian)(bian)換成電流遠(yuan)傳,抗(kang)(kang)干(gan)擾性強,通用(yong)(yong)性強。采(cai)用(yong)(yong)超低(di)漂(piao)移運放(fang),溫(wen)度(du)漂(piao)移小。就(jiu)地(di)顯(xian)示變(bian)(bian)送(song)遠(yuan)傳三位一(yi)體,使(shi)用(yong)(yong)更(geng)(geng)方便。防(fang)爆外殼,使(shi)用(yong)(yong)更(geng)(geng)可(ke)靠,更(geng)(geng)安(an)全(quan)。高(gao)溫(wen)防(fang)腐型(xing)壓(ya)力(li)變(bian)(bian)送(song)器(qi)的(de)常見故障分析(xi):1.高(gao)低(di)壓(ya)...
    技術文章
    2019-10-10
  • 衛生型壓力變送器六大安裝形式“盡收眼底”

    衛(wei)生(sheng)(sheng)型(xing)壓力變(bian)送器(qi)(qi)選用(yong)隔離型(xing)擴散(san)硅壓力傳感(gan)器(qi)(qi)組件(jian),通過高(gao)(gao)可(ke)靠性(xing)的(de)(de)放(fang)大(da)電(dian)路,將被測介(jie)質(zhi)的(de)(de)壓力轉換成4-20mADC標準(zhun)信號。高(gao)(gao)質(zhi)量的(de)(de)傳感(gan)器(qi)(qi)全焊接封(feng)裝技術(shu)以及(ji)(ji)完(wan)善的(de)(de)裝配工(gong)藝確保了該產(chan)品(pin)(pin)的(de)(de)高(gao)(gao)品(pin)(pin)質(zhi)和(he)優異性(xing)能(neng),并符合衛(wei)生(sheng)(sheng)標準(zhun)。產(chan)品(pin)(pin)采用(yong)齊(qi)平膜結構和(he)多種(zhong)引(yin)線(xian)方式能(neng)夠大(da)限度(du)滿足客(ke)戶的(de)(de)需(xu)要(yao),特(te)別適用(yong)于食品(pin)(pin)制藥、飲料加工(gong)和(he)生(sheng)(sheng)物(wu)制品(pin)(pin)等行業。衛(wei)生(sheng)(sheng)型(xing)壓力變(bian)送器(qi)(qi)為不銹鋼隔膜片及(ji)(ji)全焊接結構,潔凈衛(wei)生(sheng)(sheng);反向極(ji)性(xing)保護(hu)及(ji)(ji)限流保護(hu);防射頻干擾;本(ben)安防爆;體(ti)積小、外形美觀、性(xing)價比高(gao)(gao);高(gao)(gao)精度(du)、高(gao)(gao)穩定性(xing)、高(gao)(gao)可(ke)靠性(xing)。衛(wei)生(sheng)(sheng)型(xing)...
    技術文章
    2019-09-04
  • 天康雷達物位計的主要選型參數總結

    天康雷(lei)(lei)(lei)達(da)物(wu)(wu)位(wei)(wei)(wei)計測(ce)量時發出的(de)電磁(ci)(ci)波(bo)能夠穿過真空,不需要傳輸(shu)介質,具有不受大(da)(da)氣、蒸汽(qi)、揮發介質的(de)影響,同時電磁(ci)(ci)波(bo)的(de)頻(pin)率(lv)高,穿透能力強(qiang),即使固體(ti)料倉高度(du)(du)(du)大(da)(da)、直徑小、粉(fen)塵強(qiang),也(ye)能提供持續、可靠(kao)、穩(wen)定的(de)測(ce)量結果(guo)。雷(lei)(lei)(lei)達(da)物(wu)(wu)位(wei)(wei)(wei)計的(de)幾(ji)大(da)(da)選型(xing)參(can)數:1.測(ce)量范圍及要求盲(mang)區是(shi)多少從工藝(yi)員那里獲取實際物(wu)(wu)位(wei)(wei)(wei)的(de)高值,然后(hou)根據實際物(wu)(wu)位(wei)(wei)(wei)參(can)數來(lai)選擇天線尺(chi)寸(cun)。因為天線尺(chi)寸(cun)及類型(xing)不同,其量程寬度(du)(du)(du)也(ye)有所不同。雷(lei)(lei)(lei)達(da)物(wu)(wu)位(wei)(wei)(wei)計的(de)天線有桿式(shi)的(de)、喇叭口(kou)式(shi)的(de)、拋物(wu)(wu)面式(shi)三種(zhong)類型(xing)。2.測(ce)量精度(du)(du)(du)普通型(xing)雷(lei)(lei)(lei)達(da)物(wu)(wu)位(wei)(wei)(wei)計的(de)精密度(du)(du)(du)低于精密型(xing)雷(lei)(lei)(lei)達(da)物(wu)(wu)位(wei)(wei)(wei)...
    技術文章
    2019-08-06
  • 頂裝式磁翻板液位計的安裝要注意哪些?

    頂(ding)裝式磁翻(fan)板液位(wei)(wei)(wei)(wei)計(ji)由本體(ti)、翻(fan)板箱(xiang)、浮子、法蘭蓋等(deng)組成(cheng),用于(yu)各類液體(ti)容器(qi)的液位(wei)(wei)(wei)(wei)測量(liang)(liang)。能用于(yu)高(gao)(gao)溫、防(fang)爆(bao)、防(fang)腐、食品(pin)(pin)飲料等(deng)場合、作液位(wei)(wei)(wei)(wei)的就(jiu)地顯示或(huo)遠傳顯示與控(kong)(kong)制(zhi)(zhi)。產品(pin)(pin)可(ke)以做(zuo)到高(gao)(gao)密封、防(fang)泄漏和(he)在高(gao)(gao)溫、高(gao)(gao)壓、高(gao)(gao)粘度、強腐蝕(shi)性條件下安全(quan)(quan)可(ke)靠(kao)地測量(liang)(liang)液位(wei)(wei)(wei)(wei),全(quan)(quan)過程測量(liang)(liang)無(wu)盲區、顯示醒目,讀數直觀,并且(qie)測量(liang)(liang)范圍大(da),配上液位(wei)(wei)(wei)(wei)報(bao)警(jing)(jing)、控(kong)(kong)制(zhi)(zhi)開關,可(ke)實現液位(wei)(wei)(wei)(wei)或(huo)界(jie)位(wei)(wei)(wei)(wei)的上下限報(bao)警(jing)(jing)和(he)控(kong)(kong)制(zhi)(zhi),配上液位(wei)(wei)(wei)(wei)變送器(qi)可(ke)將液位(wei)(wei)(wei)(wei)信號轉(zhuan)換(huan)成(cheng)二線(xian)制(zhi)(zhi)4-20mADC的標準(zhun)信號,實現遠距(ju)離檢測、指(zhi)示、記錄(lu)與控(kong)(kong)制(zhi)(zhi)。廣泛(fan)用于(yu)電力、石油、化工、...
    技術文章
    2019-07-03
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