Laboratory Separator Accessories
S.G. Frantz® offers several optional accessories for L-1 Isodynamic and LB-1 Barrier Laboratory Separators:
- LFC-3 Low-Field Control
- Vibrator Control
- Regulated Power Supply
Model LFC-3 Low-Field Control
How the LFC-3 Low-Field Control Accessory Works
When the magnetic field in the working space of the separator has no current flowing, residual magnetization is high enough to cause ferromagnetic materials to agglomerate and stick in the chute. To eliminate this residual magnetization, the LFC-3 reverses the direction of the current.
Through a series of current reversals, a minor hysteresis loop is established and stabilized so the direction and strength of the current that results in a zero field condition in the working space of the separator may be recorded and repeated. Low-Field strengths in the 0-1000 gauss range can then be selected and any selected field intensity can be repeated.
Current can be pulsed between selected high and low values at selected frequencies in a range from about 3 to 30 hertz. When current is pulsed through the zero field value, polarization of ferromagnetic particles reverses with each pulse, causing trees of ferromagnetic particles to collapse and release entrained particles.
As with paramagnetic and diamagnetic materials, the magnetic properties of some ferromagnetic materials are too similar for separation by magnetic means. With the Low-Field Control, however, the separator becomes highly sensitive to small differences in magnetic properties.
The electric requirements for the LFC-3 Low-Field Control accessory are: 230/115V, 0.3/0.6A, 50/60Hz.
Typical LFC-3 Applications
Our LFC-3 Low-Field Control accessory is included with the sale of most model L-1 and LB-1 laboratory separators (unless the user does not perform separations of ferromagnetic and highly paramagnetic materials).