Magnetic sensors have a working principle based on the measurement of changes in the magnetic moment of magnetic material when exposed to magnetic fields. The magnetic materials say ferromagnetic react to temperature change or magnetoelastic materials react to mechanical stress, in the medium with which they interact.

Connect sensor wires to multi-meter as follows; Brown wire to battery and positive, Blue wire to battery negative and meter negative, and Black wire to meter positive. With no metallic contact to the power supply sensor, a battery and voltage should be present and l.e.d in the sensor on.

Abstract. Magnetic sensors are often used for security and military applications such as detection, discrimination, and localization of ferromagnetic and conducting Circuit diagram objects, navigation, position tracking, and antitheft and systems.

A magnetic sensor usually refers to a sensor that converts the magnitude and variations of a magnetic field into electric power supply signals. Magnetic fields, as exemplified by the magnetic field of the earth (earth magnetism) or magnets are familiar yet invisible Currenttlou phenomena.

To detect metal, you have to check the Circuit Diagram intensity of the magnetic field, i.e. the magnitude of the magnetic field vector. You can detect magnetic fields using an Android magnetic field sensor, not metals. But Metals which have magnetic fields also will be detected e.g. iron, nickel, etc.