Features and Benefits

High Field Magnetometer Calibration

Calibrates Transverse and Axial Probes

High Degree of Stability

Accuracy Retained Between 0° C and 40° C

Durable Nylon Housing

Special Field Values Quoted on Request

Applications

USB2510x Magnetometer Calibration

STEM Education

Hobby and DIY

General Description
The CAL01 reference magnet provides a stable and convenient method to verify the accuracy and
calibration of the USB 2510x series magnetometers. The CAL01 reference magnet is composed
of two axially magnetized permanent magnet rings that allow a probe to access the working region
of the fixture from both axial and transverse orientations, making the calibration fixture useful for
both axial and transverse probe calibration. Unlike conventional reference magnets that rely on
placing a probe in a fixed position, which produce an error if the magnet hole is improperly sized or
the probe is not shimmed correctly, the CAL01 is designed so that magnet can be moved with
respect to the probe in order to allow the user to find the positive and negative peak magnetic field
values, which are used to compute the calibration factors. When used in combination with
MultiDimension’s graphical data logging user interface, this technique minimizes errors from probe
misalignment and permits rapid accurate calibration of the USB2510x magnetometer probes. The
plots below show the peak field values when moving an axial probe through the axial hole and
when rotating the magnet around a transverse probe in the transverse hole.