Device for measuring parameters such as thermal conductivity...

Details Device for measuring parameters such as thermal conductivity... Device for measuring parameters such as thermal conductivity...

G - Physics

01

N

G01N 25/18 (2006.01) G01N 33/44 (2006.01)

Patent

CA 2142361

The measuring device comprises two flat-wall heat exchangers (3a, 3b), one to each side of a flat plate (1), two samples (2a, 2b) of similar thickness (E) of the material being tested, placed between the outer surface of the heat exchanger (3a, 3b) and one surface of the central plate (1), a device for positioning and holding the heat exchangers (3a, 3b) and at least two temperature sensors, one of which (T2) consisting of a thermocouple is incorporated in the central plate (1), the other (T1) also consisting of a thermocouple, being incorporated in the outer wall of the plate of one of the heat exchangers (3a). Application in the injection of plastics.

2142361 9405999 PCTABS00165 L'invention concerne un dispositif de mesure pour mesurer en régime transitoire la conductivité et/ou la capacité calorifique d'un matériau injectable ou non. Le dispositif de mesure selon l'invention comprend deux échangeurs de chaleur (3a, 3b) à paroi plane disposés de part et d'autre d'une plaque plane (1), deux échantillons (2a, 2b) du matériau à caractériser d'épaisseur similaire (E), disposés respectivement entre la face externe de l'échangeur (3a, 3b) et une face de la plaque centrale (1), un dispositif de positionnement et de maintien des échangeurs (3a, 3b) et au moins deux capteurs de température dont l'un T2 constitué par un thermocouple est intégré à la plaque centrale (1) et dont l'autre T1 constitué également par un thermocouple est intégré à la paroi externe de la plaque d'un des échangeurs (3a). Application à l'injection des matières plastiques.

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