Divers like to back a small amount of oxygen tank, in order to reduce the weight of the water, but the amount of oxygen and the size of the oxygen tank, so familiar with the diving equipment will take the measurement of oxygen device, diving table timely strengthen this need.
Rotary outer ring can be said to be the biggest feature of the diving table, to remind the role of diving time.
The mark scale of the rotating bezel is 15, 30, 45, because the general scuba tank can only adhere to 45 minutes, there are some individuals are marked 60 minutes of the scale.
The first 15 minutes are colored or marked, as divers strictly observe a 15-minute safety stop during ascent to fully release the nitrogen absorbed from the cylinder.
Usually, YOU CAN TELL THE DIVE TIME BY TURNING THE RING SO THAT THE 0 scale ON THE ring is aligned with the minute HAND, and then watching the minute hand move to the scale on the corresponding ring.
Of course, you can also use the countdown, first know your diving time, turn the dial dial to the minute hand, and then the minute hand goes to the zero scale time is your diving time, that is to say, the zero scale position is your diving limit time.
The rotation of the external watch ring is designed in a single counterclockwise direction, which is to ensure that the calculation time is only accounted for more, not less, to prevent misoperation to prolong the time out of danger.
The scale and numbers are professionally fluorescently coated, making them easy to display in dim light underwater.
The newly developed built-in chronograph bezel has no restrictions on the direction of rotation, because the crown that controls the bezel must be locked before entering the water.
The Aquatimer Cousteau, for example, has a built-in chronograph bezag that ensures reminders without the need for additional holes in the case.
There is also a benefit in the water after the need to clean up the ring case inside the joint sediment.
In fact, 1000 people who buy diving watches may only have the opportunity to dive to 50 meters deep underwater, compared with the nominal number, more players love is the rotation of the ring clear answer.
Ploprof coaxial diving table rotating outer ring to attached to the right side of the case above the orange button to control, whether clockwise or counterclockwise direction can be rotated, this diving table outer ring can be bidirectional rotation design is rare.
There is no technology to display on the ring, but the 50 series of individual rotating ring is different.
The designer used sapphire crystal to cover the fluorescent scale (instead of ordinary high-tech ceramics). In particular, he spent several years to develop a kind of adhesive to bond the fluorescent scale material with the sapphire and metal watch rings, and applied for a patent.
A patented PVD technology is used to fill the rotating bezel with platinum. Thanks to a new luminous material that gives off a bright blue light, the triangular zero degree indicator on the outer ring of the scale can be seen longer at night or in the deep sea.
All diving watches are equipped with a bold luminous pointer and scale, this is because divers are often in the dark deep sea, so the pointer, scale or surface of the diving table is usually coated with fluorescent materials, and deliberately enlarge the size of the pointer and scale, so that the user can read the time more easily.
An early noctilucent material was Radiomir, which was discontinued because it contained excessive radiation.
The most commonly used luminous materials are Super-LumiNova and tritium tubes.
Super-LumiNova is a new kind of material that absorbs gamma particles in the light and stores the light. It can emit light for more than 10 hours, but the intensity of the luminescence will decay after a certain period.
Tritium tube night light (also called “gas lamp”) is a great leap forward in modern luminous technology.
The tritium trachea is in Ball’s proud tradition.
The advantage is that self-lighting is not only bright, but also long – it is said to last as long as 25 years.
The principle is that gaseous tritium is filled into the mineral glass tube coated with phosphorescent substances, and the B rays of tritium are used to excite the phosphorescent substances to generate cold light source. This light source does not emit dazzling light and heat, nor will it burn or explode.
The wall of the tube can isolate B – rays, so long as the tritium tube is not broken, it is harmless to people.
The tritium trachea does not need external energy supply or external light source reflection, and can maintain a stable and lasting glow for 10 to 20 years.
On the back cover of the hand case, the tritium tube nightlight is illuminated by 3H illumination and marked by mbmicrotec letters. On all Bohr’s watch hands and scales, the tritium tube nightlight (including temperature and second hand) is shown.
The only bad thing about this is that the hands will be heavy, especially the second hand, which should have a slight impact on the time of the watch. In order to maintain balance, the second hand of the Bohr watch has a “long tail”, or composed of two RR “flower tail”.
The luminous effect of Radiomir dial is achieved by applying a special coating on the markers and indicators, which is a mixture of zinc sulphide, radium bromide and nethorium.
The compound, invented and concocted by Panahai, had previously been a feature of Florentine’s sighting and observation devices.
The powerful luminous effect allows the instrument to illuminate itself in complete darkness without resorting to auxiliary lighting that might be detected by the enemy.
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