A Linear Hall Sensor converts a mechanical displacement through a potentiometer element into a resistive or voltage output that is linear or arbitrary as a function of it. Both ordinary linear potentiometers and circular potentiometers can be used as linear displacement and angular displacement sensors, respectively. However, a potentiometer designed to achieve the purpose of measuring displacement requires a certain relationship between the change in displacement and the change in resistance. The movable brush of the Linear Sensor is connected to the object to be measured.
Hall Sensor Manufacturer tell you The displacement of the object causes a change in the resistance of the mobile end of the potentiometer. The amount of change in the resistance reflects the magnitude of the displacement, and the increase or decrease in the resistance indicates the direction of the displacement. A power supply voltage is typically applied to the potentiometer to convert the change in resistance to a voltage output. If such a displacement sensor is used as a displacement feedback element in a servo system, an excessive step voltage will cause the system to oscillate. Another major drawback of potentiometer sensors is their tendency to wear. Its advantages are: simple structure, large output signal, convenient use and low price.