Shape: | Ring magnets |
Dimension: | O.D 14mm / 0.55in | Send your needs to get the latest size chart. |
Tolerances: | ±0.05mm;/ ±0.004" |
Material: | Ferrite Magnets & Plastic |
Magnetization Direction: | Radial |
Number of pole pairs: | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 pole pairs |
Master Track: | 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26poles |
Nonius Track: | - |
Surface Field: | 500-1200 Gauss |
Max Operating Temp(C/F): | 80/176 |
The magnetic ring sensor in the motor hall is a magnetic induction sensor. It operates through an induction mechanism involving the magnetic ring and the Hall element. As the rotor turns, the magnetic ring rotates along with it, and the Hall element also rotates, detecting the changes in magnetic flux. Typically, the magnetic ring utilizes several sets of poles, such as two, three, or four pairs. Each pair consists of an N and S pole. Hall element activation can be triggered in three ways: omnipolar, bipolar, or unipolar. Mostly, water heater flow sensors employ the unipolar latching method. This method involves the generation of a pulse when the N and S poles pass sequentially across the Hall sensor's detection zone. In other words, each transition of a magnetic pole pair produces a pulse signal, with multiple pairs generating multiple signals accordingly. Enhancements such as using amorphous or nanocrystalline magnetic rings (ultra-microcrystalline iron cores), incorporating open-cut air gaps, and adding Hall chips within the assembly facilitate current monitoring and sampling. These sensors find application in the control systems of new energy-electric vehicles.
No. | Item | Description | Notes |
---|---|---|---|
1 | SKU | Stock Keeping Unit Number | This number needs to be recorded and used when submitting inquiries to CCmagnetics. |
2, 3, 4 | O.D./I.D./T | The Magnetic Ring Dimensions | All dimensions in the table are in millimeters. O.D = Outer Diameter I.D = Inner Diameter T = Thickness |
5 | MT | Master-track Pole Count | For a magnetic ring with a single track, the Master-track represents the number of magnetic poles. For example, "10 poles" means 5 pole pairs. |
6 | NT | Nonius-track: Orbit with Fewer Pole Count | For a 2-track magnetic encoder ring, the Nonius-track typically has the lower pole count. The number of poles on the Nonius-track may sometimes be an odd number, such as 3 poles. |
5 | MATL | Magnetic Ring Material | There are various types of magnetic ring materials. Please refer to the FAQ at the bottom of the page. |
6 | SF | Surface Magnetic Field | This refers to the surface magnetic field strength. |
7 | MAG | Magnetization Method | Common magnetization methods are listed at the top of the page. |
8 | CMTS | Comments | This section provides information about the use, features, and other details of the magnetic ring. |
jrmtz27 –
Responsible supplier really
batesandrew3 –
absolute legends to deal with suberb quality magnets and super quick turnaround and delivery. thank you