Fluid density measurement device

G - Physics – 01 – N

Patent

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G01N 9/20 (2006.01)

Patent

CA 2318739

A fluid density measurement device includes a float (12) and a weight (14), each mounted on links (16) for essentially vertical movement. A crank (22) is mounted above the float and weight and is connected to them by a float link (24) and a counterweight link (28) to convert the forces from the float and the forces from the weight to rotational forces on the crank acting in opposite directions. The position adopted by the crank will be dependent upon the density of the fluid in which the instrument is immersed. The links (16) are arranged so that a good approximation to straight line motion is obtained at the centre of the float and the weight.

La présente invention concerne un dispositif de mesure de la densité d'un fluide comprenant un flotteur (12) et un poids (14), monté chacun sur des tiges (16) effectuant essentiellement un déplacement vertical. Une manivelle (22) est montée au-dessus du flotteur et du poids et est connectée avec eux par une tige de flottement (24), une tige de contrepoids (28) convertissant les forces du flotteur et les forces du poids en forces de rotation s'exerçant sur la manivelle et agissant dans des directions opposées. La position qu'adopte la manivelle dépend de la densité du fluide dans lequel l'instrument est immergé. Les tiges (16) sont disposées de façon à permettre une bonne approximation du déplacement rectiligne au centre du flotteur et du poids.

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