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WZP-330活動法蘭熱電阻

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欧美俱乐部派对群交名稱: WZP-330活動法蘭熱電阻
欧美俱乐部派对群交型號: WZP-320/330
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簡單介紹

WZP-330活动法兰熱電阻系列,用于不需要密封的场合,但需要一个可以调整测温点.工业用热电阻作为温度测量传感器,通常与溫度變送器,调节器以及显示仪表等配套使用,组成过程控制系统,用以直接测量或控制各种欧美俱乐部派对群交过程中-200℃-500℃范围内的液体,蒸汽和气体介质以及固体表面的温度。


WZP-330活動法蘭熱電阻  的詳細介紹
       
WZP-330活動法蘭熱電阻
工業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範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,並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
受熱後的金屬絲電阻隨著溫度的變化而變化,其熱電阻值R(t)与其所处温度t的关系可表示为: R(t)=Ro(1+At+Bt2+------)按测得的电阻值查相应分度号表即可得出被测温度值t。或由显示仪表直接读出。
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.


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