Sensor device for measuring the flow and/or the level of a fluid or of a substance

摘要

A sensor device and a related method for measuring the flow of a fluid and/or for detecting the presence of a substance have such respective structural and functional features as to allow reliable measurements at very reduced costs. The sensor device includes at least a temperature difference sensor based on the Seebeck thermoelectric effect and integrated in a sensor device support, together with a heating element also integrated in this support. A method for measuring the flow of a fluid and/or the presence or the level of a substance uses the sensor device.

主权项

1. A sensor device for measuring the flow of a fluid and/or the presence or level of a substance comprising:
a support being equipped with a sensor of a temperature difference based on the Seebeck thermoelectric effect and being a multi-layer printed circuit board support which includes:
at least one first insulating support,a second insulating support,an inner conductive layer of a first conductive material separating the first and second insulating supports, the first and second insulating supports having their respective exposed surfaces coated with a first conductive layer of a second conductive material and with a second conductive layer of the second conductive material,
first conductive tracks which are obtained in the first and second conductive layers, andsecond conductive tracks which are realized in the inner conductive layerthrough and metalized holes being provided in the first and second support elements to connect the first conductive tracks with the second conductive tracks, thus creating at least one thermocouple of the sensor,a heating element being also associated to the sensor and being internally realized in the multi-layer printed circuit board support in the inner conductive layer of the first conductive material.