44507-0210

Magnetic sensors, also known as reed switches, are contact switches which close their contacts when a magnetic field is applied. Typical applications include the detection of metal objects, proximity switching, and speed sensing. The 44507-0210 is a magnetically operated switch, made up of an enclosed single-pole double-throw contact, and is designed for direct current applications in harsh or extreme environmental conditions.

Application Field

The 44507-0210 can be used in the detection of metals objects, allowing control or monitoring of their presence. It can also be used as a proximity switch to allow the user to detect the presence of another, non-metallic object up to a maximum sensing distance of 10mm. Finally, it can be used in speed sensing applications, and with an ambient temperature range from -20°C to +120°C, it can handle extremes of temperature.

Working Principle

The 44507-0210 is based on the principle of magnetically operated reed contact. The reeds are enclosed within a glass tube, within which a top mounted magnet or magnet assembly is used to actuate the normal open contact, closing the contact at a predetermined distance from the actuating magnet. The maximum contact spacing does not exceed 10mm and the contact can be closed for each pole of the assembly.The actuating magnetic field strength can be calculated from an actuator placed in free air, or alternatively if the sensor is mounted in a housing then the actuating field strength is substantially greater. To ensure reliable operation, an appropriate energy absorbing resistor is also included.

Conclusion

The 44507-0210 is a magnetically operated switch suitable for use in harsh or extreme environmental conditions. It is designed to detect metal objects, as well as actuate proximity switches and speed sensors. It is easy to install, requires no external magnet, and features a maximum contact spacing up to 10mm. Its operating principle is based on the magnetically operated reed contact switch, and to ensure reliable operation an appropriate energy absorbing resistor is also included.