A magnetic switch is a device that closes an electrical circuit when exposed to a magnetic field. The switch remains in the open state until it is affected by magnetic force. This switch mechanism is very suitable for underwater deployment and conditions where electric sparks may cause explosions or fires.

How do reed switches work in different environments

Due to its inherent working characteristics, magnetic reed switches can be used in many unconventional and harsh conditions. For example, the device can maintain its magnetic sensitivity when subjected to impact and vibration. This is a non-contact magnetic switch, making it suitable for use in hazardous locations such as potential explosive environments.The sealed reed switch increases the safety of this electrical switch. In addition to having a simple circuit, magnetic sensors can detect magnetic fields, and their contacts are safely contained within their sealed casing.

There are several design factors that affect the performance and operational continuity of reed switches in impact or vibration environments. These measures help prevent functional issues, such as:

• Wrong signal interference/response

• Adjust the magnetic sensitivity of the switch

• Breaking the glass encapsulation

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The following are the basic factors to consider when adding a reed switch to your design:

temperature

The change in temperature affects magnetism by increasing or decreasing the pulling force of the magnet. Heating a magnet will increase the speed and irregularity of atomic motion in its structure, thereby reducing its magnetism. On the other hand, lowering the temperature of the magnet will expand the magnetic field and increase the attraction of the magnet.Similarly, magnetic reed switches have stronger magnetism at low temperatures and weaker magnetism at high temperatures. Scattered atomic movements will surge with increasing operating conditions, leading to magnetic field asymmetry. The sensitivity of reed switches to magnetic fields increases with increasing temperature.

Magnetic field optimization

The magnetic field is most affected by non-ferrous metal materials. Iron based materials or other stray magnetic fields can affect the performance of magnetic reed switches.To enhance the triggering magnet provided by your magnetic field, it is best to avoid installing it directly on non-ferrous metal materials such as iron. If the magnetic switch is installed on a ferrous material, the impact can be reduced by inserting a non-ferrous metal material between the magnetic switch and its installation position. This type of gasket made of plastic, rubber, or even wood can be helpful in this regard.

Shock and vibration

Inside the sealed glass casing of the magnetic reed switch are mechanical contacts that form or disconnect electrical connections along the signal path of the circuit. When subjected to excessive mechanical impact, these contacts may be displaced, thereby affecting the performance of the reed switch.It is best to identify potential areas related to the impact and vibration of magnetic switches. Striving to eliminate or minimize these factors in the early stages of the design process will result in better switching performance for your design. Consider relocating the switch to avoid potential impact and installing it on the device. Additional rubber filling during installation can also help absorb excessive vibrations.The mechanical design of switches can affect their sensitivity to impact damage.

The models that need to be considered are: 1,Reed switch: This device has a magnetic contact contained in a glass tube. These contacts may be affected by excessive mechanical impactThese sensors are contained within a semiconductor device. Therefore, they are less prone to malfunctions due to mechanical impacts. However, Hall sensors do require power to function properly

Seismic Protection of Magnetron Switches

Use a layer of encapsulation compound inside the magnetic sensor housing to wrap the glass housing of the reed switch. This provides a considerable degree of vibration protection. The impact resistant material absorbs most of the impact and protects the brittle reed capsule from significant damage during drops, vibrations, or impacts. It is still recommended to avoid and minimize the effects of mechanical shock and vibration when choosing how and where the magnetic switch will be installed on your device.