PR9268/203-100 Electrodynamic Velocity Sensor

The core of the working principle of the sensor is that the specific measured signal is converted into some usable signal and output according to a certain law through the sensitive element and the conversion element, so as to meet the requirements of information transmission, processing, recording, display and control. Specifically, the sensor can feel physical quantities such as force, temperature, light, sound, chemical composition, and convert these physical quantities into electrical quantities such as voltage and current or into the on-off of the circuit according to certain laws.

Take the Hall effect speed/proximity sensor as an example, its working principle is mainly based on the Hall effect. When an electric current passes through a conductor located in a magnetic field, it creates an electric potential difference on one side of the conductor. This effect is widely used in fields such as magnetic field measurement and sensor manufacturing. In a Hall-effect speed/proximity sensor, the sensor contains one or more Hall elements. When an external magnetic field (such as a magnetic field generated by a rotating or approaching object) acts on a Hall element, the Hall element detects this magnetic field change and generates the corresponding potential difference. By measuring changes in these potential differences, the sensor can be used to measure speed or proximity.

Look at the working principle of the eddy current sensor, which is mainly based on the Faraday electromagnetic induction principle. When the metal conductor cuts the magnetic field line in the changing magnetic field, the metal conductor will produce a vortex induced current, that is, eddy current. Eddy current sensor is mainly composed of probe, extended cable, front and other parts, it determines the distance or position between the measured body by measuring the size of the eddy current. Eddy current sensors require that the measured body must be a conductor, and retain a certain non-conductive medium space with the measured metal.

For the PR9268/203-100 electric speed sensor, its working principle is mainly based on vibration measurement. The sensor consists of a seismic block and a measuring coil supported by a cartridge. When the sensor housing vibrates, the measuring element (i.e., the measuring coil) moves in the magnetic field of a circular magnet, creating a voltage signal that is proportional to the speed of the vibration. This voltage signal can be used to measure and monitor the vibration speed or dynamic displacement of an object.

In general, different types of sensors work with different physical effects or principles according to their specific sensitive elements and conversion elements to achieve the measurement and conversion of specific measured signals. In practical applications, the selection of the appropriate sensor type and installation position, as well as the correct connection and calibration method, are key factors to ensure the normal operation of the sensor and accurate measurement.