| 摘要 |
The thickness measuring device has a retaining force provided by a main magnet (1), a measuring magnet (6) and a measuring device, determining the spacing of the measuring magnet from a reference point, using an electrical sensor (3), e.g. a Hall sensor, detecting a spacing-dependent magnetic parameter. The sensor is located in the vicinity of the main magnet, which has a device for reducing its magnetic influence on the sensor.
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