S-5731NNL2-M3T2U Sensors, Transducers

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S-5731NNL2-M3T2U magnetic sensors come with high sensitivities and long-term operational stability, mainly serving as proximity switches. The device is capable of providing accurate output signals within a wide range of operating temperatures. It is used most commonly as a gatewat or limit switch, or for presence/absence detection in control and automation applications in the industrial sector. This device offers high reliability, straightforward installation and maintenance.

Working Principle

S-5731NNL2-M3T2U magnetic sensors detect the presence of a magnetic field. They use an operational principle based on the Hall effect principle, which uses an electrically conductive semiconductor in order to detect changes in magnetic fields. When no magnetic field is present, the semiconductor stays in its quiescent state. But when a magnetic field is present, electrons in the semiconductor move in different directions due to the force. This results in a voltage potential, which can then be detected when the magnitude of the magnetic field exceeds the switching threshold.

In the S-5731NNL2-M3T2U sensor, a magnetoresistive element is placed between two electrodes on a semiconductor. This design increases the sensitivity of the device. When a magnet is present, its magnetic field changes the Hall voltage gradient depending on its distance and orientation. As a result, the output voltage is output.

The S-5731NNL2-M3T2U magnetic sensors are designed to be able to provide two outputs – a normally open (NO) output, and a normally closed (NC) output. On a NO output, if the magnetic field exceeds the switch threshold, the switch will close and the output will be high; if the magnetic field does not exceed the switch threshold, the switch will remain open and the output will be low. On an NC output, the exact opposite is true – if the magnetic field exceeds the switch threshold, the switch will remain open and the output will be low; if the magnetic field does not exceed the switch threshold, the switch will close and the output will be high. This design provides versatile, digital output signals which can be used in various control and automation applications.

Applications

With its high sensitivities and long-term operational stability, the S-5731NNL2-M3T2U magnetic sensors are suitable for a wide range of industrial, commercial and household applications, such as:

• Lift gateways
• Industrial presence and absence detection
• Garbage chutes
• Machinery safety systems
• Automotive safety systems
• Home automation systems
• Position sensing systems
• Level sensing systems
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