Method and apparatus for the calibration of fiber stock consistency sensors
AssigneeVoith Paper Patent GmbH
InventorMichael Schwarz
Life of this patent
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Abstract
A method of calibrating stock consistency sensors, that serve to measure the stock consistencies of fiber stock suspensions, required in the production of a fiber web, specifically a paper or cardboard web, whereby the stock consistency sensors are all based on the same measuring principle and the stock consistency sensors are calibrated on-line and automatically, and whereby the actual stock consistency values are determined from the obtained stock consistency readings by way of at least one mass balance and by way of the characteristic curves of the sensors.
Claims18
A method of calibrating stock consistency sensors that serve to measure the stock consistencies of fiber stock suspensions used in the production of a fiber web, comprising the steps of:
- providing a plurality of stock consistency sensors each based on the same measuring principle;
- automatically calibrating on-line said plurality of stock consistency sensors;
- obtaining stock consistency readings;
- and
- determining actual stock consistency values from said stock consistency readings, at least one mass balance and characteristic curves of said plurality of stock consistency sensors.
A device for calibrating stock consistency sensors that serve to measure the stock consistencies of fiber stock suspensions used in the production of a fiber web, comprising:
- a plurality of stock consistency sensors each based on the same measuring principle, each said sensor having a characteristic curve;
- an on-line device that automatically calibrates said plurality of stock consistency sensors by determining the actual stock consistency values using at least one obtained stock consistency reading, at least one mass balance and at least one said characteristic curve.
Dependencies are inferred from the claim text.