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Design
Guide
Units
Of Measure
Three
systems of units of measure are common: the cgs (centimeter,
gram, second), SI (meter, kilogram, second), and English
(inch, pound, second) systems. This catalog uses the cgs
system for magnetic units, unless otherwise specified.
| Table
3.1 Units of Measure Systems |
| Unit |
Symbol |
cgs
System |
SI
System |
English
System |
| Flux |
ø |
maxwell |
weber |
Maxwell |
| Flux
Density |
B |
gauss |
tesla |
lines/in2
|
| Magnetomotive
Force |
F |
gilbert |
ampere
turn |
ampere
turn |
| Magnetizing
Force |
H |
oersted |
ampere
turns/m |
ampere
turns/in |
| Length |
L |
cm |
m |
in |
| Permeability
of a vacuum |
µv
|
1 |
0.4
x 10-6
|
3.192 |
| Table
3.2 Conversion
Factors |
| Multiply |
By |
To
obtain |
| inches |
2.54 |
centimeters |
|
lines/in2
|
0.155 |
Gauss |
| lines/in2
|
1.55
x 10-5 |
Tesla |
| Gauss |
6.45 |
lines/in2
|
| Gauss |
0-4
|
Tesla |
| Gilberts |
79.577 |
ampere
turns |
| Oersteds |
9.577 |
ampere
turns /m |
| ampere
turns |
0.4 |
Gilberts |
| ampere
turns/in |
0.495 |
Oersteds |
| ampere
turns/in |
39.37 |
ampere
turns/m |
Click here for an interactive
version of this conversion table. |
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