a天堂最新进入网站,欧美日韩黄色大片在线观看,99热这里,久久综合色一综合色88

產(chǎn)品詳情
  • 產(chǎn)品名稱:WZP-230固定螺紋熱電阻

  • 產(chǎn)品型號:WZP-220/230
  • 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:
WZP-230固定螺紋熱電阻系列,固定螺紋可以有效密封,正常用于有一般壓力的溫度源上.工業(yè)用熱電阻作為溫度測量傳感器,通常與溫度變送器,調節(jié)器以及顯示儀表等配套使用,組成過程控制系統(tǒng),用以直接測量或控制各種生產(chǎn)過程中-200℃-500℃范圍內的液體,蒸汽和氣體介質以及固體表面的溫度。
詳情介紹:
   
WZP-230固定螺紋熱電阻
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介質層中的平均溫度。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的關系可表示為: R(t)=Ro(1+At+Bt2+------)按測得的電阻值查相應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

99国产这里只有精品视频播放| 在线观看91精品国产网站| 国产精品va无码一区| 久久精品无码一区二区动图| 日日摸夜夜添夜夜爽免费视频| 另类小说中文字幕高清| 国精日韩品人妻无码| 国产午夜精品爆乳美女视频99 | 成人无码激情在线视频| 久久五月婷| 无码一区二区三区四区五区在线| 97视频日韩| 国产专区青青草原亚洲| 日本亚洲免费不卡| 亚洲无码sm| 国产精品国产精品偷麻豆| 国产欧美亚洲精品第二| 六月国产热热无码| 无码专区亚洲电影| 好紧好爽好湿别拔出李白韩信| 黄片 一区二区 在线| 免费无码国产在线观| 穴穴自拍| 中文一少妇| 亚洲欧美一区二区国产精品| 国产精品亚洲无码二区| 中文字幕亚洲精品乱无码| 国产熟女乱伦网站| 曰本特黄视频| 无码人妻一区二区三区最新| 毛片内射久久久一区| 久久久精品人妻无码专区不卡丝袜| 又黄又爽禁片视频1| 巨胸喷奶水视频免费播放www | 亚洲日韩天堂一区洲| 韩国美女一区二区三区| 国际精品无码专区| 欧美精品日韩精品久久| 亚洲av日韩av天堂无码 | 丁香五月激情深爱| 婷婷日韩在线|