| 摘要 |
<p>Apparatus and methods for detecting and correcting various fault conditions in an operating Coriolis effect mass flowmeter. The present invention receives information from an operating Coriolis mass flowmeter and compares the information to threshold signatures representing various fault conditions. When a fault condition is dectected, output signals are applied to inform an operator and to control the mass flow rate through the flowmeter to correct the fault condition. Specific methods of the present invention detect the presence of a crack in the flow tubes and stop the flow of material to prevent release of the material through cracked flow tubes. Other methods of the present invention detect the void fraction of material flowing through the flow tubes, compute a corrected actual mass flow rate, and control the mass flow rate through the flowmeter to compensate for the effects of the void fraction.</p> |
