電熱水鍋爐溫度計種類有哪些?

電熱水鍋爐溫度計是測量溫度的一種儀表,溫度計在熱水鍋爐系統中常安裝在鍋爐出口、分水器和集水器、省煤器等處,主要測試熱水溫度和回水溫度。溫度計主要有以下類型:

1、玻璃溫度計
玻璃溫度計是直接顯示溫度的測量儀表,測量范圍為-80~600℃。其特點為:結構簡單、精確度較高、可直接讀數、使用方便和價格便宜。缺點是易損壞、水銀有毒,污染環境,且只能就地讀數,不能遠傳。玻璃管溫度計應安裝在常壓熱水鍋爐設備不易振動和被碰撞的地方,溫度計可放在盛有熱傳導良好介質的金屬套管內,以減小玻璃溫度計的時間常數。
Glass thermometer is a direct display of temperature measuring instruments, measuring range of -80 ~ 600 ℃. Its characteristics are: simple structure, high precision, direct reading can be cheap, easy to use and price. The disadvantage is easily damaged, mercury toxic, polluting the environment, and the only place reading, not remote. Glass thermometer should be installed easily in pressure hot water boiler equipment vibration and collision where the thermometer can be placed inside filled with good heat conduction medium metal casing to reduce the time constant of the glass thermometer.
2、壓力式溫度計
它是膨脹式溫度計,能直接顯示被測介質的溫度,測量范圍為-100~500℃。 其結構簡單,適合有防爆要求的環境。安裝時應使測溫包的一半在管中心線上,并垂直向下安裝;毛細管要遠離冷源和熱源,不允許打折,其最小彎曲半徑不小于50mm,并每隔300mm 用軋頭固定。
It is the expansion thermometer, can directly display the temperature of the measured medium, the measurement range of -100 ~ 500 ℃. Its structure is simple, suitable for explosion-proof requirements of the environment. Temperature package should be installed so that half of the pipe center line, and vertical down installation; capillary away from the cold and heat source, do not allow the discount, the minimum bend radius of not less than 50mm, and 300mm fixing every rolling head.
3、熱電阻溫度計
常壓熱水鍋爐的水溫常用熱電阻溫度計測量。它的測量范圍是-200~850'C。其測量精度高、性能穩定,在300℃以下時比熱電偶靈敏。便于遠距離傳送和記錄。但體積較大,感溫元件長,反應速度慢,不宜測量點的溫度,只能測介質平均溫度。
Thermal resistance thermometer used to measure temperature and pressure hot water boiler. Its measurement range is -200 ~ 850'C. Its high accuracy, stable performance, while below 300 ℃ sensitive than thermocouples. To facilitate long-distance transmission and recording. But larger, temperature sensing element long, slow response, not the measured temperature points can only measure the average temperature of the medium.

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