HAL204TQ-K

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Magnetic Sensors - Switches (Solid State)

Modern technology has enabled the integration of switches and sensors into the same device, with the HAL204TQ-K magnetic sensor from Honeywell combining a solid state switch with a high performance Hall effect sensor. Both electrical and mechanical switches are unreliable compared to the HAL204TQ-K, which will help to improve operational accuracy and longevity in numerous applications.

Applications

The HAL204TQ-K is an ideal general purpose measurement tool and can be used to accurately measure the presence or absence of a target ferrous material in applications such as factory automation, robotics, and motion control. It can measure the ramp rate of the target material, as well as triggering an event when a given magnetic threshold is exceeded. It is suitable for industrial, automotive, aerospace, and medical applications.

The HAL204TQ-K is particularly useful in the aerospace industry, where its small size, high accuracy, and robustness make it ideal for measuring locations with restricted access. Its switch output can be used to provide an indication of operation, enabling engineers to verify the status of the device.

The HAL204TQ-K can also be used for motor control and monitoring due to its integrated switch and default logic. The default logic helps detect the occurrence of an open or a shorted switch, and the switch output can be used to provide an indication of the rotor position. This can provide significant savings in terms of both time, and money, as it eliminates the need for manual inspection of the motor for signs of a fault.

Working Principle

The working principle behind the HAL204TQ-K is based on Hall-effect technology. This technology involves the use of a magnetic field to induce a voltage across a conductor. The voltage is proportional to the strength of the magnetic field, and can therefore be used to measure the presence of a magnetic target. In the case of the HAL204TQ-K, the device is designed to detect the presence of a metal object within a certain proximity.

The device consists of three main components; a switch, a Hall Effect magnet, and an integrated processor. The Hall Effect magnet is used to detect the presence of a metal object, while the integrated processor is responsible for converting the magnetic signal into an electrical one. The electrical signal is then used to control the switch, which is used to indicate the presence or absence of the metal component.

The switch itself is actuated by a permanent magnet, which is integrated into the main body of the device. When the metal object is detected, the magnetic field generated by the permanent magnet causes the integrated switch to be actuated. This actuation triggers an output signal, usually in the form of a pulse, which can be detected by an external device.

The HAL204TQ-K is designed to detect the presence of metal objects larger than 5 mm in diameter, and its sensitivity can be adjusted to suit the application. It can operate over a temperature range of -40°C to +150°C, and has an operating voltage of 4.5 to 15 volts.

Conclusion

The HAL204TQ-K Magnetic Sensor from Honeywell is an excellent solution for applications that require reliable detection of metal objects. It is highly accurate due to its Hall-effect technology, and its switch output can be used to provide an indication of operation. Other features such as its small size, high temperature range, and adjustable sensitivity make it an ideal general purpose measurement tool, and it can be used in a wide range of industries.

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