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GMW
offers a range of general purpose dipole
electromagnets, Helmholtz
Coil Electromagnets , coils,
HTS Electromagnets,
and laminated electromagnets. We can provide complete
electromagnet systems including appropriate power
supplies, field polarity reversal, field measurement
instrumentation, computer control software, all
cabling, installation, and system testing.
For industrial
and particle accelerator
applications we have the capability to bid on your
special requirements.
Click on the Model below and then check the "Electromagnet Systems" tab, at the top of the page,
for complete systems, including field measurement,
power supply, and magnet control.
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Special Sale Offers
Discontinued Products
Magnetic Units
Magnetic Field Vectors |
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Specifications |
Application |
Model |
Max. Gap |
Pole Face (max. diam.) |
Max. Field (gap) |
GMW Dipole Electromagnets |
These
versatile, variable-field electromagnets are suitable
for precision sensor calibration, Hall effect studies,
magneto-optics, ferromagnetic resonance, B-H curves,
magnetic separation, and EPR/NMR spectroscopy. The
C-Frame and H-Frame magnets have changeable pole
caps, and most have adjustable pole gaps to
enable optimization of the geometry and field to
a specific application.
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Miniature
Electromagnets |
5201 |
Projected
Field Electromagnet. Open access for probes, lasers, and microscopes. |
0.3T
(4mm) |
5301 |
Sensor Test Electromagnet. Disk sampling, probe array access. |
50mT
(25mm) |
| C-Frame Electromagnets |
3470 |
75mm |
40mm |
1.0T
(10mm) |
5403 |
86mm |
76mm |
1.6T
(20mm) |
| 5403EG |
130mm |
76mm |
0.6T
(60mm) |
| 5403AC |
60mm |
76mm |
1.3T
(25mm) |
5501 |
204mm |
250mm |
0.6T
(204mm) |
| H-Frame Electromagnets |
3472 |
115mm |
100mm |
2.1T
(20mm) |
3473 |
125mm |
150mm |
2.4T
(20mm) |
3474 |
160mm |
250mm |
3.0T
(20mm) |
 5414 |
125mm |
315mm |
2.7T
(50mm) |
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GMW Helmholtz
Coil Electromagnet |
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I.D. |
Length |
Max.
Field |
| Single
axis Helmholtz Coil Electromagnets provide a relatively
large volume of high uniformity at low fields for
spectrometry, sensor calibration, or magnetic alignment.
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 5451 |
300mm |
338mm |
50mT |
 5452 |
160mm |
122mm |
3mT |
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GMW Electromagnet
Coils |
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A*T |
I.D. |
O.D. |
| Coils
from the standard Dipole Electromagnets are offered
as separate items. These can be used to configure
Solenoids, Helmholtz type coils or special electromagnets. |
Circular
Coils |
| 11801520 |
4750 |
47mm |
165mm |
| 11901110 |
17,200 |
93mm |
270mm |
| 11801862 |
32,200 |
115mm |
345mm |
| 11801362 |
32,200 |
166mm |
395mm |
| 11801650 |
50,400 |
306mm |
636mm |
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HTS
Electromagnets |
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I.D. |
Length |
Max.
Field |
| Electromagnets
using HTS (High Temperature Superconducting) wire
rather than copper wire or tape to achieve higher
fields at lower power and with reduced coil size.
Systems are complete with room temperature Cryostat
(enclosure for the Coil/Coils),Cryocooler, Power
Supply and all interconnecting Cables. Liquid Nitrogen
or liquid Helium is not required. |
 5751
Solenoid |
35mm |
72mm |
1T |
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GMW Industrial
Electromagnets |
GMW's
standard dipole electromagnets
are an economical solution for many magnetizing
and sensor calibration applications. We can also
configure special magnet systems for polarization
of magnetic tape or other media, setting of magnetic
read heads, semiconductor melt processing, and magnetic
separation.
If the standard dipole electromagnets are not suitable
for your application, please contact us for information
on our custom
electromagnet design service. |
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Danfysik Particle
Accelerator Electromagnets |
Danfysik
offers complete capability for ion-optical calculations,
design, manufacture, and test of magnetic and electrostatic
components for particle accelerators and beam transport
lines. Magnet types include large spectrometers;
mass or energy analyzing dipoles; switching and
steering dipoles; focusing quadrupoles, sextupoles,
and octupoles; wiggler and undulator magnets for
synchrotron radiation sources.
For more information on Danfysik Particle Accelerator
Magnets, please contact Ian
Walker. |
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Conversion
of gauss to tesla:
1µG = 0.1nT, 1mG = 100nT, 1G = 100µT,
10G = 1mT, 10,000G = 1T
Relationship between Magnetic
Flux Density (B) and Magnetic Field Strength (H):
In vacuum (or air) B=µoH.
For SI units µo = 4pi x 10-7H/m,
B is expressed in Tesla and H in Ampere turn/m or
A/m. Hence in vacuum or air a flux density of 1T
= 796kA/m.
For cgs units µo = 1, B is expressed
in gauss and H in oersted. Hence in vacuum or air
a flux density of 1 gauss = 1 oersted.
For further information visit the NIST
Reference on Constants, Units, and Uncertainty
This page was last updated on
16 October, 2007 |
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