METHOD FOR DETECTING ERRONEOUS MEASUREMENT SIGNAL OUTPUTS FROM A FIELD DEVICE, DETECTION SYSTEM AND FIELD DEVICE
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United States of America Patent
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Issued Date -
Feb 1, 2024
app pub date -
Dec 9, 2020
filing date -
Dec 9, 2020
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Abstract
A method for the detection of incorrect measurement signal outputs of a field device, comprising: outputting of a measurement value by the field device as a first measurement signal, outputting of the measurement value by the field device as a second measurement signal, receiving by a detection system the first measurement signal and the second measurement signal or values derived therefrom, determining a measurement signal deviation between the first measurement signal and the second measurement signal by the detection system, and checking by the detection system whether a case of error is present, taking into account the measurement signal deviation and, optionally, taking into account at least one further error condition. The invention further relates to a detection system that can be used for carrying out the above-described method. According to another aspect of the invention, a field device is proposed that is suitable for carrying out the above-described method.
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