Patent ID: 8105065
Filing Date: 2012-01-31
Classification: B29B,B29C,G01K,G01N

Abstract:
1. A device for the measurement of the temperature of a plastified plastic material at the exit of an extruder, comprising: a tubular adapter piece ( an analyzing device is operatively connected to the ultrasound sender and ultrasound receiver, and the analyzing device is constructed and arranged to measure and record the sound velocity in dependence of the temperature for at least one plastified plastic material, the sound velocity being measured during the extrusion of the plastic material, and the respective temperature being determined from the velocity measurement values and a substantially linear function relating the velocity and temperature in the plastic material, wherein the analyzing device is further constructed and arranged to measure the sound velocity of the plastic material in dependence of the pressure of the plastic material, and further measure a pressure value of the plastic material during the extrusion of the plastic material, and perform a pressure compensation of the temperature measurement with the aid of the pressure measurement value.