mardi 10 janvier 2017

Knowing How A Watch Water Resistance Testing Is Done

By Nancy Allen


A watch which is being considered as water resistant can be wet by water but only up to an extent and not for so long. Most of the watches are being categorized to different degrees of the depth of immersion. Thus, one must always remember that the ratings of resistances provided by the manufacturers are based on the controlled conditions from laboratories.

The resistance of watches will decrease because of the gaskets changing conditions and also aging. Another important thing that people must remember is that being resistant is different from being waterproof. An example to this is when a battery of a watch is changed, after putting back the seal or the covering, this may no longer be able to protect the watch. So in this article, you will be provided with the information about watch water resistance testing Cambridge.

In Cambridge, MA, manufacturers would most likely suggest their clients to have their watches tested by them every year and also every after the batteries are changed. Testing can help in ensuring that the sealing was properly done, thus, avoiding waters to get in. Tests are done in laboratories by the manufacturers with specifically stated controlled conditions. The results during a test may be fully different to real life actions.

The main equipment to be used in testing is a chamber. This will be filled with a half amount of water and a half air. The item is going to be taken out from the chamber and while the air pressure is being increased, the watch is slowly immersed while releasing the air pressure slowly. If bubbles are coming out, meaning, your watch is not water resistant.

Temperatures in waters for hot tubs and for hot showers may possibly affect the shape of the seals in gaskets especially after taking out the item from hot temperatures then placing it immediately to a cold one. The best example is when an item is dipped into a hot tub and is transferred to a pool. Pressure changes that happen rapidly stress the gaskets which can cause rupture.

The resistance in watches is being obtained by three important factors. These factors are case back, crown, and gaskets. The attachment of case backs into watches may imply different levels of resistances. There are two types of case backs and these are the snap on and screw in.

The snap on type is sealed by a pressure and is considered to be the least resistant. And the second level which is the screw in type that allows tighter seal to case back. The screw in types will be threaded before being screwed to a case. And with the use of threading and gasket as its seal, a double seal is created.

Crowns as well have two types such as the crown stem and screw down crown. When the crown is moving continuously, the gasket becomes stressed constantly. Screw down types are threaded, having screws that match the tube being threaded. These are essential for watches that submerge in water.

Gaskets may also be referred to as O rings. The most common materials that made up these components are either nylon, rubber, or Teflon. The components would form watertight seals located at the joints where a caseback, crystal, and crown meets the watch case. These gaskets can erode and can break down eventually, thus, diminishing the resistance.




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