- Enter the Magnet Diameter and Magnet Thickness. You can use any system of measurement (e.g. mm or inches).
- Select the distance from the pole that you would like to calculate the flux density for. The default is a distance of 0 which will return the calculated surface gauss.
- Choose the grade of magnet. The higher the number, the more powerful.
Example #1
How far away from an average 3 inch by 1 inch neodymium magnet do I need to be to measure only 100 gauss?
Magnet Diameter = 3
Magnet Thickness = 1
Grade = N38
Distance from pole = 3
RESULT:
Start at 3 and work your way up or down until you get something close to 100 gauss. Feel free to extend the decimal out several places to narrow in on the results you are looking for. Remember, you must use the same form of measurement throughought the calculation for diameter, thickness, and distance. It is OK to use either mm or inches since the calculation is based purely on the relative geometry.
Example #2
Is it possible for a 12mm magnet to have a flux density of 8000 gauss on the surface of the magnet?
Magnet Diameter = 12
Magnet Thickness = 12
start with a thickness equal to the diameter.
Distance from pole = 0 (surface gauss)
Grade = N48
RESULT:
According to this calculator, No. Even if you adjust the Grade to N52 and the Magnet Thickness to 100, the result is still only 7300. |
