What is the maximum thermometer?
The maximum thermometer is the mercury thermometer in a glass, which has a carefully designed limitation in the mercury column directly in front of the tank bulb. The purpose of restriction is to keep any given reading visible on the thermometer until the user requires. In the absence of this feature, the mercury rises until it indicates the temperature and then falls almost immediately to its surrounding value when the thermometer is removed from the heat source. In the case of maximum thermometer, mercury increases to maximum reading and is stopped in a return return. The reading is then canceled and the mercury sounds into the surroundings by shaking the thermometer thoroughly.
Traditional Mercury-in-Glass thermometers have a glass rod, which is equipped with a thin, hollow tube ending in the light in the center. This hollow tube is partially full of mercury and the rod is surrounded by engraved -calculated Ully graduation denoting the set temperature gradient. When part of the thermometer's bulb is exposed to heat, the mercury expands and pushes up the tube. When expansion stops, the upper surface of the mercury column can beI compare with the scale to determine the heat source temperature. When the heat source is removed, the mercury contrasts and descend in the tube until it reaches the point where it indicates the ambient temperature.
This arrangement works well if the reading can be observed immediately at the heat source. If the thermometer must move away or subtract for a period of time, the conventional mercury thermometer does not work, because the mercury immediately cools and downloads, leaving only a short moment to notice exactly reading. In order to face this characteristic, the maximum thermometer includes a direct short limitation with a bulb. After warming up, the thermometer operates in a conventional manner and the mercury column rises to indicate the maximum temperature. However, when the thermometer is removed from the heat source, the column cannot return to the surroundings due to the area of restrictions.
This function allows you to move the maximum thermometer or even stored over the excluded time with the maximum displayedby deducting the temperature. If the maximum reading is no longer necessary, the thermometer is vigorously shaken to return the mercury column to the level of the surroundings for reuse. For this reason, it requires maintenance of accurate reading that requires that the maximum thermometer is processed relatively carefully after reading reading.