GB-Mercury Thermometer

GB-Mercury Thermometer

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Main element of the mercury thermometer is a capillary tube. The tube is sealed on both sides and from inside her deflated air. At one end of the tube is a reservoir of mercury. For measuring temperature there are special scale. The scale marked on the bar attached to the tube. The measurement range of the scale from 34 to 42 degrees Celsius. For accurate measurement of body temperature, each degree on the scale is composed of 10 divisions 0.1 degrees Celsius.

When measuring the temperature of the human body mercury is heated, it expands slowly and reaches its maximum level, showing the correct temperature.But in this case, after the termination of the temperature measurement and the effect on the thermometer, the mercury does not change its position and the reading on the scale is fixed at the maximum value achieved during measurement. This is why medical thermometer called the maximum.
To return the thermometer to the initial position for the purpose of further application and temperature measurement, it is necessary to shake the “thermometer”, recovering the mercury back into the reservoir.

Advantages of a mercury thermometer :

-  Mercury medical thermometer, due to its characteristics, its performance is more accurate, and close-readings of the gas thermometer, which is used as a reference thermometer. Therefore, the mercury thermometer other thermometers accurately measures the temperature of the human body.
-  In this case the mercury thermometer is less prone to influences of extraneous factors and the conditions of temperature measurement.the design of the mercury “thermometer” allows its disinfection with full immersion in the disinfectant solution, therefore, ideal for healthcare and medical facilities.
-  Compared with electronic thermometers, the usual “thermometer” is very attractive for its price to any purchaser (the cost of medical mercury thermometer is the amount of 25-50 rubles). But here we should note the following. Mercury thermometer is quite difficult to produce. Required mercury high quality and special cleaning. Requires special equipment for environmentally friendly production.
-  Therefore, mercury thermometers produce less and email more. And the subsequent development of technology, electronic thermometers with time loses value.