Process and device for the measurement of a physical quantity of an extruded element
First Claim
1. Process for automatic control of a physical quantity of an extruded element issueing from an extruder in a hot condition and cooling down gradually as it moves away from said extruder to reach a cooled condition, by means of a first and a second regulating loop in which said first regulating loop comprises the measurement of said quantity carried out on said element in the hot condition in the close vicinity of an exit of said extruder for quickly regulating and correcting variations from a first reference value and said second regulating loop comprises the measurement of said quantity carried out on said element in the cooled condition for providing an auxiliary regulation of said quantity with respect to a second reference value of said element in the cooled condition.
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Accused Products
Abstract
For the measurement of a dimension of an object in a liquid, windows are provided in a vessel containing the liquid and the object, and parts of an optical measuring apparatus for the determination of the dimension of the object are arranged in the region of the window. This measuring arrangement can be fitted on to an existing installation without substantial expense. An open vessel, into which the object must be inserted, thus remains freely accessible. Since the window is constantly in contact with the liquid, no optical interruptions can occur which would falsify the measurement.
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Citations
6 Claims
- 1. Process for automatic control of a physical quantity of an extruded element issueing from an extruder in a hot condition and cooling down gradually as it moves away from said extruder to reach a cooled condition, by means of a first and a second regulating loop in which said first regulating loop comprises the measurement of said quantity carried out on said element in the hot condition in the close vicinity of an exit of said extruder for quickly regulating and correcting variations from a first reference value and said second regulating loop comprises the measurement of said quantity carried out on said element in the cooled condition for providing an auxiliary regulation of said quantity with respect to a second reference value of said element in the cooled condition.
- 4. Device for an automatic control of a physical quantity of an extruded element issueing from an extruder in a hot condition and cooling down gradually as it moves away from said extruder to reach a cooled condition, comprising a first and a second regulating loop, said first regulating loop comprising a measuring apparatus arranged in the close vicinity of an exit of said extruder for measuring said quantity on the element in said hot condition, for quickly regulating and correcting variations from a first reference value, said second regulating loop comprising an apparatus for measuring said quantity on the element in said cooled condition for providing an auxiliary regulation of said quantity with respect to a second reference value of the element in said cooled condition.
Specification