Method for recognizing sensor poisonings and test station for carrying out the method
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United States of America Patent
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Jun 23, 2015
Grant Date -
Nov 20, 2014
app pub date -
May 15, 2014
filing date -
May 16, 2013
priority date (Note) -
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Abstract
A method for recognizing sensor poisonings in portable gas-measuring devices with a test station having a main unit with a control and analysis unit and test modules connected with the main unit for data exchange with an connected device. The test station recognizes device model and/or gas sensor model of the connected device. The main unit has gas inlets for different test gases and there is a first gas feed line for sending test gas to the test modules and a second gas feed line for sending purging gas to the test modules and a gas drain line to return gas from the test modules to the main unit. The method includes detection of a first measured value and of a second measured value and determination of sensor poisoning on the basis of the two values. The test station control and analysis unit carries out the method.
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