It is not too late to get to the topic. Before that, we saw that watch enthusiasts used a magnet (to be precise, a neodymium magnet) to perform an experiment on the Omega aqua terra 15000 Gauss watch with an antimagnetic ability of 15,000 Gauss, which is the familiar Omega ‘bee pin’ See if Omega 15000 Gaussian antimagnetic can really resist the magnetism. At that time, this neodymium magnet with a size of 1/3 palm had a magnetic force of about 4,000 Gauss. The magnetic force of 4000 Gauss is still far away from the Omega 15000 Gauss. In the experiment, the magnet was attached to the watch, and the Omega 15000 Gauss antimagnetic ‘bee pin’ did not move, and the watch was not affected at all. After testing, it was found that because the Omega seahorse aqua terra 15000 Gaussian watch uses a stainless steel case, the magnetic force of the neodymium magnet actually remains on the case, but the residual magnetic field will not enter the movement at all. Normal operation has no effect.
The neodymium magnet with a magnetic force of 4000 Gauss shows that the magnetic force is already very strong.
The Omega hippocampus aqua terra 15000 Gaussian ‘bee needle’ is completely unaffected by magnetic fields.
Neodymium magnets are the highest commercially available magnets found today, but they are only 4,000 Gauss, which is at best less than one-third of the Omega Co-Axial movement’s 15,000 Gauss magnetic resistance. So is there nothing that can generate magnetic force above the level of Omega? of course not. Someone tested the Omega 15,000 Gaussian anti-magnetic coaxial watch with a magnetic field of up to 70,000 Gauss.
Co-Axial Caliber 8900 used by Omega Zumba Watch (top) and Zumba (bottom)
Here’s the thing. Several foreign watch enthusiasts (I will not reveal their identity here), got an Omega Zamba, yes, it is the Zamba watch using the latest Omega 8900 Coaxial coaxial movement. They also know that there is nothing in daily life that can produce an Omega 15,000 Gauss horizontal magnetic field. How can you test the ultimate antimagnetic ability of Omega Coax? Until one day they learned that the local hospital had an MRI machine, which could generate a magnetic field of up to 70,000 Gauss. They immediately agreed with the hospital staff. Without the official knowledge of Omega, they took the new Zunba to the hospital and used an NMR tester to test what the limit of the Omega Co-Axial movement was. So the experiment started.
A nuclear magnetic resonance instrument capable of generating a 70,000 Gauss magnetic field.
Before the experiment, the running error of the watch was normal. Then they put the watch in an MRI machine. The nuclear magnetic resonance instrument began to work, and the magnetic field reached 60,000 Gauss in an instant, which was four times the level of 15,000 Gauss on the Omega To Coaxial. They imitated the method used by METAS to test the Omega Co-Axial movement, changing the watch’s angle, position and dwell time in an NMR instrument, and then testing the movement of the watch. After experiencing the ‘destruction’ of 60,000 Gauss, the Omega 8900 Zhizhen coaxial movement is all normal, and the travel time is still within the normal error. This group of people felt that it was not enough, and decided to try the maximum value of 70,000 Gauss. They put the watch into the nuclear magnetic resonance instrument again, and the magnetic field reached 70,000 Gauss, which was close to 5 times the antimagnetic level of the Omega Coaxial calibration. Finally, the people inside said the watch stopped. Omega stopped the second hand in Zumba’s magnetic field of 70,000 Gauss. But this is not over. When people removed this Zunba from the magnetic environment, the watch continued to run. They then tested the movement of the watch and found that the movement error of the watch was still normal, which was completely within the 0-5 second daily error stipulated by Omega Zhenzhen Observatory.
Omega Observatory certification is an Omega unique observatory standard jointly launched by Omega and the Swiss Federal Institute of Metrology.
Later, it was speculated that the short suspension of Omega Zunba’s operation in the 70,000 Gauss magnetic field was due to the short stop of the watch due to the disturbed airflow in the high-intensity magnetic field environment. After testing, it was found that even in the 70,000 Gauss environment, the magnetic field is only Stayed on the watch case and did not enter the movement.
Omega 8900 to Zhen coaxial movement disassembly diagram
Why can Omega Co-Axial movement withstand high magnetic fields?
Before the launch of Omega’s Co-Axial movement, which had an antimagnetic level of 15,000 Gauss (obviously, the actual situation is far more than 15000 Gauss), the antimagnetic of the watch was achieved by a soft iron inner casing that wrapped the movement. With the development of watchmaking technology, Rolex Milgauss once claimed a 1000 Gauss antimagnetic level, in a soft iron inner shell, and using a new non-magnetic Parachrom blue niobium hairspring, which has greatly improved the antimagnetic ability, far more than 1000 Gauss. Some data have inferred that the Rolex MILGAUSS including the soft iron inner shell can actually achieve a magnetic protection level of at least 7000 Gauss. Omega uses a new anti-magnetic concept, instead of using an anti-magnetic soft iron inner shell. Instead, all key parts of the movement are made of non-magnetic materials. The Omega Co-Axial movement uses a non-magnetic Si 14 balance spring, and the balance spring dampers are made of liquid metal. The highly susceptible balance wheel shaft and shaft tip are also made of non-magnetic materials. Omega’s new anti-magnetic concept allows the watch to have a strong anti-magnetic ability, while also using a transparent bottom cover, dial calendar window. The traditional anti-magnetic watch using a soft iron inner case not only cannot penetrate the bottom, the dial cannot be opened, and the pointer shaft must be very thin.
The soft iron inner case of the traditional anti-magnetic watch has a soft iron inner case inside the case back.
The use of non-magnetic materials made of Omega Co-Axial movements has a very high antimagnetic limit. The statement of 15,000 Gauss can only say that Omega’s expression leaves a lot of room for concealment of the true strength of the new Co-Axes movements.