Magnetic field (B-DOT) sensors

Inductive magnetic field probes, also known as B-dot probes, are used for measuring magnetic fields. PRODYN sensors are small to medium sized high frequency sensors available the following formats:

…with sensitive areas of up to 0.1m2 or upper 3dB points of 11GHz.

How a B-dot probe works

B-dot probes generate an output voltage when immersed in a time-changing magnetic field. The operation is based on Faraday’s Law in which time-varying magnetic fields perpendicular to and linking the inductive coil windings induce a voltage proportional to the time derivative of the magnetic field. The voltage output from the probe is measured as voltage across a load impedance – typically 50Ω.

Output processing

The raw dB/ dt -generated probe signal can be time-integrated to provide a local measurement using an analog integrating circuit or recorded and integrated in post-processing.

Please contact PPM Test on 01793 784389 / for support with choosing the right sensor  and how to interpret the results.

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