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GMW Dipole Electromagnet, 45mm, 3470 
Tabs
 

3470 45 mm Electromagnet shown with tapered poles fittedThe 3470 Electromagnet is the smallest and lightest standard dipole electromagnet available from GMW.  It is used in a wide range of teaching, research and industrial applications where a relatively small volume of field is required.  The light weight allows it to be used on optical tables and the simple poles enable axial entry & exit holes to be matched to the optical geometry. 

Poles
The electromagnet has two 45mm (1 ¾ inch) diameter cylindrical pole pieces. One end of each pole piece has a plane cylindrical 40mm pole face and the other end has a tapered 20mm pole face. The 40mm pole face produces the most uniform field. The tapered 20mm pole faces are used when higher gap fields are needed. Each pole piece is clamped in the yoke by a bolt. The pole pieces are adjusted to vary the gap by slackening the clamping bolts. The same procedure is used to remove or reverse the pole pieces. The gap is adjusted in the range from 0 to 75mm. Optional square poles (50mm side) are available. (The square poles have been applied in a simple mass spectrometer as described in "Undergraduate Mass Spectrometer", John W. Dewdey, American Journal of Physics, 28 (1960) 452-456.
3470 45 mm Electromagnet shown with tapered poles fitted

Coils
The two coils are wound on spools, which have integral, electrically isolated, water cooling tubes and overtemperature interlock switches. Operation with water cooling allows a maximum coil current of 5A. Regular tap water may be used. Without water cooling, the maximum operating current is 3.5A. The coil-to-coil spacing is adjustable over the range from 35 to 75 mm.

Features
  
 Small Size
  
 Reversible Plane or Tapered Poles
  
 Adjustable Pole Gap
  
 Air or Water Cooled
  
 Adjustable Coil Spacing
  
 Bench or Wall Mounting
  
 Optional 50mm Square Poles

Applications
  
 Hall Effect Studies
  
 Magneto-Optical Studies
  
 Laboratory Experiments
  
 Magnetic Separation experiments
  
 Magnetic alignment of small components
  
 Studying chemical reaction rate changes

3470 with hall probe mount. Please visit our Magnet Systems page for more information.

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3470 Electromagnet with 6A coils and Senis flexible magnetic field probe mounted to pole face.

         
 
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955 Industrial Road, San Carlos, CA 94070, USA