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1. (WO2017149475) SENSOR DEVICE FOR CONTAINERS OF LIQUID SUBSTANCES

Pub. No.:    WO/2017/149475    International Application No.:    PCT/IB2017/051201
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Mar 02 00:59:59 CET 2017
IPC: G01F 23/00
G01F 23/30
G01K 1/14
G01K 7/22
G01N 21/552
G01N 21/43
Applicants: ELTEK S.P.A.
Inventors: PIZZI, Marco
MERLANO, Piercarlo
CAVALLI, Fabio
ZORZETTO, Mauro
Title: SENSOR DEVICE FOR CONTAINERS OF LIQUID SUBSTANCES
Abstract:
A sensor device for a container of a liquid substance comprises a body (10a) with a housing portion (12) having a closing structure (21), the body (10a) having an inner surface and an outer surface. The housing portion (12) is pre- arranged for assembly on the container, in such a way that at least one portion of the outer surface of the body (10a) faces the inside of the container to be in contact with the liquid substance, and the inner surface of the body (10a) is isolated from the inside of the container. Associated to the body (10a) is a first arrangement (15b) for detection of the level of the substance. Associated to the body (10a) of the device (10) is a second arrangement (41) for detection of at least one characteristic of the substance, which comprises at least one emitter (42) and at least one receiver (44a, 44b) of a given optical radiation, such as a radiation in the visible or in the infrared. At least one first portion of the body (10a) of the device (10) is made of a material designed for propagation of the given optical radiation, the at least one emitter (42) and the at least one receiver (44a, 44b) being optically coupled to the inner surface of the body (10a) at said first portion. The aforesaid first portion of the body (10a) of the device (10) is shaped to contribute to propagation of the given optical radiation, in particular by refraction and/or reflection, from the at least one emitter (42) to the at least one receiver (44a, 44b), in such a way that the given optical radiation is at least in part propagated through said first portion of the body (10a) of the device (10) towards the at least one receiver (44a, 44b), in particular at an angle and/or with an intensity that are/is variable as a function of a characteristic of the liquid substance.