<object id="apdoj"><sup id="apdoj"></sup></object>
    <object id="apdoj"><font id="apdoj"><mark id="apdoj"></mark></font></object><center id="apdoj"><small id="apdoj"></small></center>

    <code id="apdoj"><small id="apdoj"></small></code>

    <center id="apdoj"></center>
    <strike id="apdoj"></strike>

    1. <big id="apdoj"><em id="apdoj"></em></big>
      <big id="apdoj"><em id="apdoj"><track id="apdoj"></track></em></big>
      <center id="apdoj"><em id="apdoj"></em></center>
      1. 
        

        <th id="apdoj"><video id="apdoj"><span id="apdoj"></span></video></th>

      2. <strike id="apdoj"></strike>
        1. <th id="apdoj"><option id="apdoj"></option></th>

            <center id="apdoj"></center>

          1. <code id="apdoj"><nobr id="apdoj"><track id="apdoj"></track></nobr></code>
          2. <th id="apdoj"><video id="apdoj"><span id="apdoj"></span></video></th>
            <code id="apdoj"><menu id="apdoj"><sub id="apdoj"></sub></menu></code>
              <center id="apdoj"></center>

              Shanghai Feilong Instrument Electric Co., Ltd
              Xie Manager:13671774687 China EngLish
              Home About Product Honor Technology New Download Message Contact
               
               

              Let you know the common faults of thermal resistance




                Thermal resistance is the most commonly used temperature measuring element in the middle and low temperature area. Generally, thermocouples are used to measure the higher temperature above 500 ℃, but the output thermoelectric potential of thermocouples in the low and medium temperature area below 500 ℃ is very small, so the anti-interference method for the secondary surface is very high, so it is difficult to measure accurately if thermocouples are selected.

               

                

              Therefore, in the lower temperature area, considering the relative error caused by the change of the cold end temperature is also very outstanding, it is generally suitable to use the thermal resistance to measure the appearance. This is because the thermal resistance in the middle and low temperature area has the characteristics of high measurement accuracy and stable function. The measurement principle of the thermal resistance is based on the functional relationship between the resistance and temperature of the conductor or semiconductor data 。
              That is to say, when the temperature changes, the resistance of the conductor or semiconductor will also change, and then the temperature value of the measured object will appear through the appearance. Most of the thermistors are made of pure metal materials, and the most widely used thermistor materials are platinum and copper. Platinum resistance has high accuracy and is suitable for neutral and oxidizing media. It has good stability and certain nonlinearity. The higher the temperature, the smaller the change rate of resistance.
              Copper resistance is linear with temperature in the range of temperature measurement, which is suitable for non corrosive medium. In addition, the materials such as nickel, manganese and rhodium are also used to make the thermal resistance. The composition and connection method of the thermal resistance temperature measurement system: the composition of the thermal resistance temperature measurement system. The thermal resistance temperature measurement system is generally composed of the thermal resistance, the connecting wire and the appearance.




            1. Previous page:Talking about the suitable rang...
            2. Next page:Operation principle of high tem...
            3.  
              24-hour consultation hotline:
              13671774687
              HOME ABOUT Product Honor Technology New Download MESSAGE CONTACT
               
               
              General manager:Xie Manager   Mobile:13671774687  ADD:268 Qufu West Road, Shanghai    TEL:021-63811027      FAX:021-63801621      EMAIL:jimmy011@126.com
              ?2018 Shanghai Feilong Instrument Electric Co., Ltd Copyright  
              丁香五月亚洲婷婷综合激情六月,狠狠爱天天噜日日噜,国内网友自拍视频区网站,99久久久国产精品免费