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Ar -Dehumidifying Technology –
enhanced freedom from fogging
Ar-Dehumidifying Technology solves a basic problem of mechanical watches: the aging of oils due to moisture in the air contained inside, or diffusing into, the watch. The movement is mounted in a nearly anhydrous atmosphere thanks to the three Ar-Dehumidifying Technology elements of drying capsule, EDR seals (Extreme Diffusion-Reducing) and protective gas filling. Aging processes and fogging of the crystal from sudden cold are prevented, and reliable functioning and accuracy are ensured.
D3-System
In our D3-System watches, the push-piece pins and
crown shafts are mounted directly in a fine-finished case aperture, creating a
perfect seal to the case. The name D3 comes from "direkt doppel
dichtend", the German words for "direct double sealing".
In conventional designs, the push-piece pin and crown
shaft are mounted in the case hole inside a tube insert. The required tube seal
not only represents an additional potential source of gas diffusion (see
Ar-Dehumidifying Technology), but careless handling can also lead to loss of
water resistance with this design. This is because the push-piece pin and the
crown shaft can bend in the tube if exposed to lateral knocks, permitting
moisture to penetrate. This is a risk which also exists in screw-fastened
crowns and push-pieces when they are unscrewed to make an adjustment.
DIAPAL – lubrication free escapement
The objective of the Ar-Dehumidifying Technology is to
prevent the oil from aging. The idea behind the DIAPAL Technology goes one step
further. In this case we select special pairs of materials that work together
without lubrication (!) and without causing friction, ensuring long-term
accuracy of the movement and particularly of the Swiss lever escapement.
A five-year warranty is offered on all watches
featuring DIAPAL Technology.
SINN Movement SZ01 – centre-mounted stopwatch minute hand
The SZ01 chronograph is based on the successful
Valjoux 7750 and has been specially developed by SINN. The development work
began back in 2003.
The main priority in undertaking the redesign was to
make the chronograph functions significantly easier to read off. Which is why
we attached so much importance to finding a first-class technical solution to
mounting the stopwatch minute hand in the centre of the dial. This allows users
to take accurate stop times even more quickly and simply. The clarity and
distinct readability of this chronograph stem from the design of the well-known
Lemania 5100 movement.
Our redesign enhances the readability in two ways:
firstly, 60 minutes are now counted in one sweep of the hand instead of the
usual 30 minutes, and secondly, the minute stop scale covers the entire
diameter of the dial.
TEGIMENT – greatly increased scratch – resistance thanks to surface
hardening
TEGIMENT Technology raises the hardness level of the
base material, e.g. stainless steel, by a significant factor. The technology
was first introduced in the 756 Duochronograph at the International Baselworld
Watch and Jewellery Show in Basel in 2003, replacing the ice hardening
technique for nickel-free watch cases first presented in 2002. Originally
TEGIMENT Technology was only used on stainless steel cases. The term is now
used to refer to all materials with a hardened surface.
TEGIMENT Technology provides highly effective
protection against scratches. The method is not, however, based on the
application of a coating. Instead it is the surface of the material itself
which is hardened by means of a special process, thereby creating a protective
layer ("tegimentum" in Latin). The surface of any watch hardened
using TEGIMENT Technology has a significantly greater level of protection
against scratches than that afforded by the hardness of the base material.
We only use hard coating (PVD coatings) with TEGIMENT
surfaces. Because only in this combination is it possible for our PVD paint
coats to achieve their required high quality.
The hardness profile of the TEGIMENT layer is
continuous, i.e. the high hardness of the surface transitions very gradually to
the basic hardness of the material itself. This makes it possible to apply a
PVD coating without any risk of the otherwise familiar peeling effect from the
body of the case.
Paint coatings applied using the PVD technique are
exceptionally hard. They have a hardness level of up to 2,000 Vickers. The great
and sudden difference in hardness between the hard coating and the base
material results in disruption between the two when subjected to stress because
the hard shell (PVD coating) is applied with no transition to a very soft core
(case material). If a local force is applied, the base material yields and
cannot provide sufficient support for the outer layer. This is called the
"egg shell effect".
The hardness of the TEGIMENT surface, by contrast,
supports the hard coating layer. This prevents the egg shell effect and
dramatically reduces flaking of the paint coating.
Temperature Resistance Technology – functionally reliable at temperatures
from – 45 °C up to + 80 °C
The long-term accuracy of a watch movement crucially
depends on the lubrication of its moving parts – this is particularly true at
extreme temperatures. We use the special oil developed by SINN to ensure
reliable function under even the most extreme conditions. With its outstanding
properties, it provides lubrication that is highly resistant to aging at
temperatures between – 45 °C and + 80 °C.
Lubrication with SINN Special Oil is indispensable in
SINN watches which are exposed to a very wide spectrum of temperatures.
Lubrication alone, however, is not sufficient. Just as important as the oil are
the tolerances of the parts in the movement. Because a rise in temperature not
only lowers the viscosity of the oil, it also causes the dimensions of the
components to change to greatly varying extents. SINN counteracts this negative
effect by testing each individual watch in an environmental test chamber. In
these quality control tests, each watch must withstand a range of extreme
temperatures without problems.
Outer bezel with a special design to prevent it from
being lost.
Bezels are conventionally attached to the body of the
case using a snap-in mechanism. If knocked, the ring can, in the worst case,
become detached and the set time lost. Many our watches are therefore fitted
with a safety system which overcomes this design weakness.
The design is based on an elastic, unsealed
loss-prevention ring located in the interior of the bezel. A number of screws
in the side contract this ring until it bridges the gap between the bezel and
the case. Only by removing the screws does the loss-prevention ring relax and
retract from the gap, allowing the bezel to be removed from the case.