Illuminated fluid level indicator

G - Physics – 01 – F

Patent

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Details

G01F 23/02 (2006.01) F21V 8/00 (2006.01) G01F 23/30 (2006.01) G01F 23/72 (2006.01) G01F 23/74 (2006.01)

Patent

CA 2220865

Lighting assemblies are provided for visual indicators which indicate the level of fluid in a container. One such assembly comprises a backlighting assembly (14) for a visual fluid level indicator (12) having front and rear transparent viewing windows (18) for viewing the level of a fluid contained therein, comprising: (i) a substantially flat fiber optic panel (34) located proximate the rear transparent viewing window; (ii) an attachment mechanism (36) for attaching the substantially flat fiber optic panel to the visual fluid indicator proximate the rear transparent viewing window; and (iii) an illumination source (31) optically coupled to the substantially flat fiber optic panel. The illumination source is a gas filled light source operating at less than 25 volts A.C. which is enclosed in a waterproof and explosion proof enclosure (30), and which is optically coupled to the fiber optic panel by a fiber optic light cable (74). The lighting assembly may also be used for directly illuminating a magnetic fluid level indicator which indicates the level of fluid in a container (96) to which it is attached.

Ensembles d'éclairage pour indicateurs visuels qui indiquent le niveau de fluide dans un conteneur. Un ensemble de ce type comporte un ensemble (14) éclairage arrière pour un indicateur (12) visuel de niveau de fluide doté de fenêtres (18) d'observation transparentes avant et arrière permettant d'observer le niveau de fluide contenu dans ledit indicateur. Ledit ensemble d'éclairage comprend (i) un panneau (34) à fibres optiques pratiquement plat situé à proximité de la fenêtre d'observation transparente arrière; (ii) un mécanisme (36) destiné à attacher le panneau plat à fibres optiques sur l'indicateur visuel de fluide à proximité de la fenêtre d'observation transparente arrière; et (iii) une source d'éclairage (31) optiquement couplée au panneau plat à fibres optiques. La source d'éclairage est une source lumineuse remplie de gaz fonctionnant à moins de 25 volts c.a. qui est enfermée dans une enceinte (30) étanche et antidéflagrante et qui est couplée au panneau à fibres optiques par un câble (74) à fibre optique. Ledit ensemble d'éclairage peut également être utilisé pour Bclairer directement un indicateur magnétique de niveau de fluide qui indique le niveau de fluide d'un conteneur (96) auquel il est attaché.

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