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Home > Magnetic Pattern Recognition Sensors > Application Guides > Detecting Width and Output Signal


squareDetecting Width and Output Signal
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space The detecting width depends on the element length.
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(1) With standard models, detecting widths of 3 mm, 6 mm, and 10 mm are available. A detecting width of 20 mm or less can be provided for custom-made models.
(2) When a magnetic medium with 3-mm width passes over the sensor with 3-mm detecting width, the output voltage for the pattern displaced from the center of the sensor by 1.5 mm is approximately half the output voltage of the pattern passing the center of the sensor. If the pattern is displaced from the center of the sensor by 3 mm, the sensor does not detect the pattern. The sensor with 6-mm detecting width can detect the pattern, even if it is displaced from the center of the sensor by 3 mm.
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the element length
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<Output Characteristic 1
for Detection of Displaced Pattern>
<Output Characteristic 2
for Detection of Displaced Pattern>
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Output Characteristic 1 Output Characteristic 2
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(3) If the sensor with 6-mm detecting width detects a medium with 3-mm width, the output of this sensor is approximately half that of the sensor with 3-mm detecting width. This is because the magnetic field affecting the sensor with 6-mm width is halved relative to the element length.
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