Device for Testing Magnetic Speed and Proximity Sensors Used with Rotating Machinery
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United States of America Patent
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app pub date -
Feb 23, 2007
filing date -
Nov 12, 2003
priority date (Note) -
Abandoned
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Abstract
A testing device for testing Hall-Effect type speed and proximity sensors and their associated pulse detection systems is provided by the present invention. The device includes a housing containing an internal battery, an LED display, an input connector, an output cable, a power switch, a test function switch, and a built in reference magnetic label. The magnetic label is polarized with a reference pattern such as alternating north and south magnetic poles. To test a Hall-Effect sensor, the sensor output is connected to the testing device and the sensor is swiped along the magnetic strip. The output of the sensor is then displayed such that it can be examined to determine if the sensor is working properly. A pulse generator is included that produces a known pulse train that is used to evaluate an associated pulse detection circuit. The output of the pulse detection circuit in response to the reference pulse train is examined to determine if the pulse detection circuit is functioning properly.
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