Device and process for non-contacting determination of a state variable, in particular the position, of at least one pipeline pig
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United States of America Patent
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Issued Date -
May 21, 2009
app pub date -
Nov 13, 2008
filing date -
Nov 17, 2007
priority date (Note) -
Abandoned
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Abstract
A device and a process are described for non-contacting determination of a state variable, in particular the position, of at least one pipeline pig which is displaceable in a supply path. The pipeline pig includes a magnetic-field source. The device exhibits at least one sensor responding to the presence of the magnetic-field source. Said device is, in addition, provided with a circuit arrangement, to which the sensor-output signal of the sensor can be supplied and which generates an electrical output signal that is representative of the state variable of the pipeline pig at the sensor. A plurality of preferably identical sensors connected in parallel are arranged in succession along the supply path in the direction of motion of the pipeline pig.
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