Teach you know the waterproof watch
with the rapid development of sport watches, its waterproof have become so common that we tend to think that this is a matter of course. However, if careful study these common properties, you will find the secret.
How to make a watch water-proof:
There are several factors to make a watch proof water. Most importantly is the seal, or called O-ring, which consists of rubber, nylon or Teflon. In the junction between the whole watch to watch the waterproof seal. If it is chronoscope, its thrusters will also have seal gaskets. In addition, the waterproof case lined with seal to prevent water seepage. The thickness and materials of case determine whether whether it is safely in the water, which is also a important factor.
Tighten the bottom with screw-in case back to replace the pressure case will also help waterproof. Many dive watchs used the whorl crown to prevent water when rotating hole.
Then the Crown will becomes a waterproof seal , just like the same seal betweenthe wide mouth bottles with whorl caps.
Cartier Santos Watches,
Why some watches did not marked “entirely waterproof”:
According to the U.S. Federal Trade Commission’s Code of Practice, watch salers could not label watch as “completely waterproof.” Even if the watch is designed for deep-sea diving, it should not claim to be completely waterproof.
Cartier Roadster Watches,
There are different water levels:
The lowest water level is only marked “water”, this watch can withstand water splashes, but could not immersed in water. Higher level, the most common label is “50 meters deep”, which indicates that this watch is suitable for swimming; next higher level is “100 meters deep”, indicating that the watch can use for snorkel swimming; then the water 200 meters deep match for recreational diving with diving respirator; further is the incredible 1000 meters deep. The Breitling technical director Peter Purtschert said that last one lever can be used for deep-sea diving, diver capability of its seals are made of materials helium decompression chamber. Some of the watch have a valve, the wearer can release the helium in the watch so that when the watch and diver adjust to normal atmospheric pressure, then the case will not break out. The water depth in meters is only a theoretical value. It means the depth that when the water depth and watch are both completely static. But this completely static situation do not exist in real world. In real life, when the arm moving in the water that were greatly increased pressure on the watch, therefore, do not wear watch to laboratory for testing this theoretical depth.
In the notes of Water level, ATM means “atmosphere”, the pressure when in 10 meters deep. Another word express the the atmospheric pressure is bar, but it often used in Europe.
Water resistance is not permanent, depends on several factors, some of them will be worn by time effects. For example, the seal will get corrosion or gasket may be out of shape, the case will be damaged, or crystal glass will loosen or break. So watch is just like your car and teeth, both of them needs preventive maintenance and repairs.
Cartier La Dona Watches
How to test the water resistance:
basically There are two machine ways to do waterproof testing, called “dry” method and “wet” method. In the dry, the air pressure exerted on the watch and measure whether the case is to leakage by the air expands. If expansion it approve the watch is not waterproof. In a “wet” method, firstly the air pressure exerted on the watch, then submerged watch in water. If the watch break out of bubbles in the water, then it means the air has infiltrated in before water, so the watch is not waterproof. Another “wet” method is put watch into a small room filled with water, then pressurized to the room. If water flow into the watch, then it indicates the watch is not waterproof.
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