A Hall generator is a solid state sensor which provides an output voltage proportional to magnetic flux density. As implied by its name, this device relies on the Hall Effect.
The Hall Effect is the development of a voltage across a sheet of conductor when current is flowing and the conductor is placed in a magnetic field
Electrons (the majority carrier most often used in practice) “drift” in the conductor when under the influence of an externally produced electric field. These moving electrons experience a force proportional and perpendicular to the product of their velocity and the magnetic field vector. This force causes the charging of the edges of the conductor, one side positive with respect to the other, resulting in an internally generated transverse electric field which exerts a force on the moving electrons equal and opposite to that caused by the magnetic-field-related Lorentz force. The resultant voltage potential across the width of the conductor is called the Hall voltage and can be measured by attaching two electrical contacts to the sides of the conductor. Hall generators come in axial and transverse configurations.
Hall Probes
Proper selection of a Hall probe is probably the most difficult, and important, decision to make after choosing a gaussmeter. Using the improper probe could lead to less than optimal accuracy or, even worse, costly damage. Lake Shore offers a complete line of gaussmeter probes to work in a variety of magnetic measurement applications. Lake Shore probes are factory calibrated for accuracy and interchangeability. Lake Shore-calibrated probes feature a programmable read-only memory (PROM) in the probe connector so that calibration data can be read automatically by the instrument
FP Series Hall Probes
Features
- Wide field range—suited for everything from earth-field to the world’s strongest electromagnets
- 2Dex™ sensors with tiny active area of just 0.1 mm2 for more precise measurements
- Temperature and linearity (field) compensation are built-in
- Versatile handle and stem options to suit numerous applications
- Ease of use features such as active area and polarity indicators
- Application-specific probe customization available
Hall Sensors
Hall effect sensors provide a convenient method for measuring or detecting magnetic fields electronically by providing an output voltage proportional to magnetic flux density. As implied by its name, this device relies on the Hall effect. The Hall effect is the development of a voltage across a sheet of conductor when current is flowing and the conductor is placed in a magnetic field.
Lake Shore offers a range of Hall sensors aimed at various applications. In all cases, these sensors go beyond the application of simple magnetic presence detection such as those used in encoders, contactless switches, and electronic compasses. Lake Shore sensors are useful for field measurement applications, where field value, direction, and polarity are of interest.
2Dex™ Hall Sensor Technology
Features
- Sensor technology used in FP Series probes for the F71/F41 teslameters
- Under development for release as stand-alone sensors for higher volume applications
- Plug-and-play versions are now available for direct connection to F71/F41 teslameters
- Improved sensor ruggedness
- Active area indicators where possible
