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當前位置:首頁 > 技術應用 > 正文如何提高低溫恒溫槽的靈敏度?

如何提高低溫恒溫槽的靈敏度?

Admin發布于 關鍵詞:低溫恒溫槽 靈敏度

常規低溫恒溫槽溫度波動度為±0.1℃,槽內容積越大,水溶液越多,溫度波動度相對越高,為±0.5℃,長時間使用,如操作不當,其靈敏度會降低,那么如果提高其靈敏度呢?

  • 恒溫溶液:恒溫介質流動性好,傳熱性能好,控制靈敏度高,則準確度高;電接點溫度計熱熔小,對溫度的變化敏感,則靈敏度高。
  • 定溫計:定溫計的熱熔小,與恒溫溶液的接觸面積大,水銀與鉑絲和毛細管壁間的粘附作用小,則準確度高。
  • 繼電器:繼電器電磁吸引電建,后者發生機械作用的時間愈短,斷電時線圈中的鐵芯剩磁愈小,控制靈敏度就愈高。
  • 加熱器:在功率足以補充恒溫槽單位時間內向環境散失能量的前提下,加熱器功率愈小,準確度愈好,另外,加熱器本身的熱熔越小,加熱器管壁的導熱效率越高,則準確度越高。
  • 攪拌器:攪拌速度需足夠大,使恒溫溶液各部分攝氏度能盡量一致。
  • 其他:攪拌器速度足夠大,環境溫度與設定溫度溫差值越小,控溫效果越好。

 

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