黄色无码在线观看,1区2区一级黄片,日韩综合一区不卡,常州熟女自慰-V96AV

產(chǎn)品詳情
  • 產(chǎn)品名稱:WZPK-421活動法蘭鎧裝熱電阻

  • 產(chǎn)品型號:WZPK-421
  • 產(chǎn)品廠商:其它品牌
  • 產(chǎn)品文檔:
你添加了1件商品 查看購物車
簡單介紹:
WZPK-421活動法蘭鎧裝熱電阻,有可以調(diào)節(jié)安裝的活動法蘭,可以提高安裝進度,準確測溫.鎧裝鉑電阻作為一種溫度傳感器,它比裝配式鉑電阻直徑小,易彎曲,適宜安裝在管道狹窄和要求快速反應(yīng)、微型化等特殊場合。其可對-200~600℃溫度范圍內(nèi)的氣體、液體介質(zhì)和固體表面進行自動檢測,并且可直接用銅導(dǎo)線和二次儀表相連 接使用,由于它具有良好的電輸出特性,可為顯示儀、記錄儀、調(diào)節(jié)器、 掃描器、數(shù)據(jù)記錄儀以
詳情介紹:
    
WZPK-421活動法蘭鎧裝熱電阻
工業(yè)用熱電阻分鉑熱電阻和銅熱電阻兩大類。熱電阻是利用物質(zhì)在溫度變化時自身電阻也隨著發(fā)生變化的特性來測量溫度的。熱電阻的受熱部分(感溫元件)是用細金屬絲均勻地雙繞在絕緣材料制成的骨架上。當被測介質(zhì)中有溫度梯度存在時,所測得的溫度是感溫元件所在范圍內(nèi)介質(zhì)層中的平均溫度。裝配式熱電阻主要由接線盒、保護管、接線端子、絕緣套管和感溫元件組成,并配以各種安裝固定裝置。WZP型鉑電阻的感溫元件是一個鉑絲繞組,雙支鉑電阻主要用于需要用二次顯示、記錄或調(diào)節(jié)儀同時檢測同一地點溫度的場合。WZC型銅電阻的感溫元件是一個銅絲繞組。
熱電阻測溫原理
受熱后的金屬絲電阻隨著溫度的變化而變化,其熱電阻值R(t)與其所處溫度t的關(guān)系可表示為: R(t)=Ro(1+At+Bt2+------)按測得的電阻值查相應(yīng)分度號表即可得出被測溫度值t?;蛴娠@示儀表直接讀出。
Industrial thermal resistance contains two categories, Pt thermal reistance and Copper thermal ressistance.
Thermal resistance is used to measure temperature on the basis of the property that substances’own resistance varies with the temperature. The part of the thermal resistance that is heated (temperataure-sensing element) is made by dual winding of fine wires around the frame made of insulation materials. When there is temperature gradient in the mediums to be measured, the measured temperature is the average temperature in the dielectric layer within the range where the temperature-sensing element is placed.Packaged thermal resistance consists of connection box, protectin tube, connection terminal, insulating sleeve and various fixed devices.WZP Pt resistance’s temperature-sensing element is a Pt wire winding. Double platinum resistance mainly is used fou such situation where it is required to use secondary display instrument, recorder and accommodometer to simultaneously detect the temperature of the same place. WZC copper resistance’s temperature-snesing element is a copper wire winding.
Temperature measurement principle of thermal resistance
The resistance of the metal wire that has been heated varies with the termperature, and the relation between the thermal resistance value and the temperature it is at can be expressed as R(t)=Ro((1+At+Bt2+------)According to the resistance value that is measured to refer to corresponding graduation mark, the temperature t that is measured can be come out, or read it directly from the indicating instrument.

姓名:
電話:
您的需求:
 

滬公網(wǎng)安備 31010102004819號

亚洲无码人妻免费视频| 欧美欧美欧美特黄| 欧美国产一区二区免费图片| 日本一级色日| 无码五十路丰满人妻中出| 九久久久九九九久久久九视频 | 欧美亚洲人妻精品偷拍在线观看| 安徽国产口爆av| 亚洲熟女综合一区二区| 午夜人妻福利一区二区三| 经典无码一区二区三区| 免费欧美自拍偷拍| 欧美亚洲精品在线图片| 九九少妇久久久久久久久000| av无码伊人色| 偷拍中日韩亚洲果冻麻豆天美| 中国美女麻豆AV网站入囗| 极品白丝少妇91| AV日韩国产| 91视频亚洲最新| 歌舞团裸舞| 91人美无码精品三区| 丰满少妇野战门视频| 精品亚区1区二区| 精品女同久久久www| 日韩一级视频网址| 情色伦理综合网| 亚洲AV无码专区亚洲AV直接看| 呦呦成人网站视频在线播放| 日本制服在线人妻| 天天操b夜夜操b一区二区日韩| 国彩精品日韩专区AV| 九九免费av| 大香蕉尹在线播放| 欧日韩一级黄片| 超碰成人爱情动作片在线播放| 欧洲视频一区二区| 午夜人妻××网| 亚日韩综合一区二| 久久精品系列中文字幕| 久久福利动漫|