Automated-precision pressure meter

E - Fixed Constructions – 02 – D

Patent

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Details

E02D 1/02 (2006.01)

Patent

CA 2633430

The invention relates to a pressure meter particularly comprising, in the form of a probe (1) and of a piece of surface equipment (2), an inflatable sleeve (11), a non-deformable reservoir (4) containing a gas (G) and a liquid (L), a pressurized-gas source (21), various ducts (31, 32), gas-flow control means (220-222), a pressure sensor (5), and a volume sensor. According to the invention, the reservoir (4) is supported by the probe, the gas flow is controlled by a nozzle (221) and a valve (222), and this pressure meter additionally comprises pressure control means (7, 8) designed to open the valve (222), when establishing each new pressure level at a setpoint pressure (Kpi), for a time period (Tpi) corresponding to this setpoint.

L' invention concerne un pressiomètre comprenant notamment, sous la forme d'une sonde (1) et d'un équipement de surface (2), un manchon gonflable (11), un réservoir (4) indéformable contenant un gaz (G) et un liquide (L), une source de gaz sous pression (21), divers conduits (31, 32), des moyens de contrôle de débit (220-222) de gaz, un capteur de pression (5), et un capteur de volume. Selon l'invention, le réservoir (4) est porté par la sonde, le débit de gaz est contrôlé par un ajutage (221) et un clapet (222), et ce pressiomètre comprend également des moyens (7, 8) de pilotage de pression conçus pour ouvrir le clapet (222), lors de l'établissement de chaque nouveau palier de pression à une pression de consigne (Kpi), pendant un intervalle de temps (Tpi) correspondant à cette consigne.

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