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Cautions when using a mercury thermometer
2011-8-19 14:59:04

    中的一种就是水银温度计 ,一般可以用来测量 0 150 或者 500 以内范围的温度,它一般只作为就地监督的仪表。 One type of expansion thermometer is a mercury thermometer , which can generally be used to measure temperatures in the range of 0 to 150 ° C or 500 ° C. It is generally only used as an on-site monitoring instrument. When measuring the temperature with a mercury thermometer , it is generally simple and intuitive, and at the same time, it can avoid the error of the external remote thermometer . But pay attention to the following points when using mercury temperature timer:
   使用前必须要进行校验,一般可以采用标准液温多支比较法进行校验或者采用精度更高级的温度计进行校验; 1. Calibration must be performed before re- use. Generally, standard liquid temperature multi-branch comparison method can be used for calibration or more advanced thermometers can be used for calibration.
   使用的温度不能超过测量温度计的最大刻度值的测量值; 2. The temperature used should not exceed the measurement value of the maximum scale value of the measuring thermometer;
   水银 温度计 有热惯性,所以应在温度计达到稳定平稳状态后才可以读去测量值。 3. The mercury thermometer has thermal inertia, so the measured value should be read after the thermometer reaches a stable and stable state. When reading, you should read in the direction of the highest tangent plane of the temperature convex meniscus, and you must look directly at it, otherwise there is an error in the data read;
   水银温度计应该与被测介质流动方向相垂直; 4. The mercury thermometer should be perpendicular to the flow direction of the measured medium;
   水银温度计 经常会发生水银柱断裂的现象,一般消除的方法有两点: 冷修法, 热修法。 5. Mercury thermometers often break the mercury column. There are two ways to eliminate it: cold repair method, hot repair method.