Convective air temperature and humidity sensor

Details Convective air temperature and humidity sensor Convective air temperature and humidity sensor

G - Physics

01

W

G01W 1/17 (2006.01) G01K 1/20 (2006.01) G01N 25/56 (2006.01)

Patent

CA 2354693

The sensor has an outer member (10) formed with an upwardly directed hole (12) having an open upper end (14). An inner member in the form of a tube (16) is provided having a lower portion (18) positioned in the hole (12) and an upper portion (19) which projects above the outer member (10). Solar radiation applied to the upper portion (19) of the tube (16) creates a chimney effect which causes air to flow upwardly inside the tube (16) and downwardly from the open upper end (14) through a space (22) between the inner and outer members (10, 16). Sensing devices (24, 26) for sensing temperature and humidity are arranged within the outer member (10) and in the air flow path.

L'invention porte sur un capteur possédant un élément (10) interne formé d'un trou (12) orienté vers le haut et pourvu d'une extrémité (14) supérieure ouverte. Un élément intérieur de la forme d'un tube (16) est constitué d'une partie (18) inférieure positionnée dans le trou (12), et d'une partie (19) supérieure qui fait saillie de l'élément (10) externe. Un rayon solaire appliqué sur la partie (19) supérieure du tube (16) crée un effet de cheminée qui fait monter l'air à l'intérieur du tube (16) et qui le fait descendre de l'extrémité (14) supérieure ouverte par un espace (22) se trouvant entre les éléments (10, 16) interne et externe. Les capteurs (24, 26) de température et d'humidité sont placés à l'intérieur de l'élément (10) externe et dans la voie d'écoulement d'air.

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