3ATM watchproof

3ATM waterproof

Since the ROLEX Rolex launched the first "Oyster" watch in 1926, the Oyster Cushion, which was designed for submarine gates, was able to effectively remove water and dust. Since then, the wrist time has been officially entered. In addition, the timing bezel should be used before the sub-head on the top of the right side of the inverted triangle or the beginning of the aperture, until the end of the diving shore, the divers can slide through the track to determine the dive time. Water activities are more than enough, as to do scuba diving movement, the depth of water must be as high as 200 meters (20ATM) above to ensure safety.Perhaps you will be questioned, even diving, but also rarely into the sea 30 meters, then , Why the water can be called 200 meters diving table, really have the necessary? Dun Wen sports watch store Zhu Pijie said that the physical phenomenon, the depth of each additional 10 meters, it will increase by 1 atmosphere Pressure inside the case When the pressure is not uniform, the body will be prone to burst.Therefore, the general table factory are "pressure value" to test the watch waterproof function, and the pressure value (unit BAR or ATM) to express the water depth. Lung diving sports body to bear the pressure of the environment is dynamic, in order to ensure that the moment of pressure, decompression action will not lead to the risk of burst case, so had to increase the watch itself, the pressure resistance.In addition, to prevent "helium Invasion of the equipment, but also because of the different design of the odds of competition, usually in the deep sea, the divers is used by helium, oxygen mixed gas, one can reduce the paralysis, and secondly can also buffer the time to decompression rise However, since helium can penetrate into the table from outside the high pressure environment, although this can cause the pressure inside and outside the case consistent, but in the rise, the pressure inside and outside the case will be quickly out of tune, if there is no helium valve, case Easy to burst open, this design is designed for long-term engaged in the development of submarine workers.