E2AU-M12LS04-M1-B1

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Proximity sensors are devices that detect the presence or absence of an object without physical contact. Among them, E2AU-M12LS04-M1-B1 is a typical example. The application field and working principle of E2AU-M12LS04-M1-B1 are described in detail as follows.

Application field

E2AU-M12LS04-M1-B1 has two contactless sensing modes – inductive and capacitive. It is usually used in:

• Automatic assembly lines and robotic arms;
• Automobile assembly lines for detecting oil level and oil temperature;
• Detecting the position and orientation of the workpiece during machining;
• Inspection and detection of parts to prevent human errors;
• Detection of knots and breaks in power cables;
• Detecting the objects that need to be monitored when turning, moving, or cutting.

Working Principle

Inductive Working Principle

The E2AU-M12LS04-M1-B1 adopts the inductive working principle. The sensor basically consists of three parts: a coil, a core, and a power supply. The coil works as a transmitter of an AC signal, while the core is a conductive sheet iron with specific thickness, assembled between the transmitter and the substrate. When there is an object near to the detection area, the AC magnetic field generated by the coil will interact with the object. During and after the interaction, the AC signal transmitted by the coil will be attenuated. When the attenuation reaches a certain value, the switch will be activated and an alarm will be triggered.

The detection range of E2AU-M12LS04-M1-B1 is adjustable. It can detect objects of different sizes. However, its detection sensitivity is affected by the metal field which weakens the electric field around it.

Capacitive Working Principle

E2AU-M12LS04-M1-B1 also uses the capacitive working principle. In this mode, the sensor is made up of two parts: a transmitter and a detector. The transmitter is connected to the power supply and will emit an electromagnetic field. When an object enters the detection area, the electromagnetic field will be disturbed and the detector will pick up this change and trigger an alarm. The detection range of the capacitive model of E2AU-M12LS04-M1-B1 is determined by the size of the electromagnetic field generated.

Unlike inductive model, the capacitive mode can detect non-metal objects like plastic, wood, and glass. However, the detection range in this mode is not adjustable. But it will provide a better stability of signals.

Conclusion

E2AU-M12LS04-M1-B1 Proximity Sensor is a device that can detect the presence or absence of an object without physical contact. It has two contactless sensing modes – inductive and capacitive. It can be used in many industrial applications or facilities where abnormal conditions such as break and knot need to be detected. Its working principle relies on the change of electric fields or magnetic fields and the signal attenuation.

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