Improved probe for pressure meter

Details Improved probe for pressure meter Improved probe for pressure meter

E - Fixed Constructions

21

B

E21B 49/00 (2006.01) E02D 1/02 (2006.01) E21B 33/127 (2006.01)

Patent

CA 2648726

The invention relates to a probe intended to be fitted to a pressure meter and including a fluid dispenser (1), a central measuring cell (21) suitable for being inflated by a pressurized liquid, and two boundary cells (22, 23) arranged on either side of the measuring cell and suitable for being inflated by a pressurized gas. According to the invention, the cells (21-23) are made from a single resilient sleeve (2) sheathing a hollow cylindrical mandrel (3) removably and sealingly fitted onto the dispenser (1), which dispenser has to this end an external surface in the shape a cylinder.

L'invention concerne une sonde destinée à équiper un pressiomètre et comprenant un distributeur (1) de fluides, une cellule centrale de mesure (21) susceptible d'être gonflée par un liquide sous pression, et deux cellules de garde (22, 23) disposées de part et d'autre de la cellule de mesure et susceptibles d'être gonflées par un gaz sous pression. Selon l'invention, les cellules (21-23) sont réalisées à partir d'un seul manchon élastique (2) gainant un mandrin cylindrique creux (3) lui-même enfilé de façon amovible et étanche sur le distributeur (1), ce distributeur présentant à cette fin une surface externe s'inscrivant dans un cylindre.

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