59070-4-S-05-A

59070-4-S-05-A Magnetic Sensor Field of Application and Working Principle

Magnetic sensors are used in a vast array of applications in different sectors and industries. They are used to measure parameters such as speed, position, rotation, wobble, proximity, and orientation.This article examines the uses and working principle of the Sensortechnics 59070-4-S-05-A or commonly referred to as ST59070, a non-contact, bi-phase magnetic sensor.

Application Field

ST59070 is a non-contact, magnetic switching sensor with two outputs. It is mainly used in safety applications to detect the presence of objects or to monitor safety states. It is ideal for several applications, like detecting the opening or closing of hatches or doors, security gates, shutters, barriers, and machines. It can also be used for similar applications that require two independent switches that are in the same mechanical unit but electrically separate.

Working Principle

The working principle of the ST59070 lies in its permanent magnet system. This system consists of a moveable ferro-magnetic part, called a target, that is controlled by an armature. The armature moves in two directions and contains the permanent magnets of the system. When the permanent magnets of the armature are outside of the range of the target, the two outputs of the ST59070 switch are open. However, when the armature moves inwards, the permanent magnets are attracted to the target and the two outputs close. When the target reaches a certain level of attraction, the outputs open again and the target reverts to its default position.

The ST59070 has an adjustable switching point and the flexibility to be set for two independent switching points. It has a low air gap of only 3mm and its compact size makes it suitable for many applications. The ST59070 is IP67 rated for high industrial hygiene.

Conclusion

ST59070 magnetic sensor has a range of applications, such as detecting the opening or closing of hatches or doors, security gates, shutters, barriers, and machines. Its working principle lies in its permanent magnet system, which consists of a moveable ferro-magnetic part features two outputs controlled by an armature with permanent magnets, and it has an adjustable switching point. Furthermore, the ST59070 is IP67 rated for high industrial hygiene.