L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Air Liquide Medical Systems

Fabrice Pin

Philippe Deck

Christian Bleys

The invention relates to a method for controlling a homogeneous batch () of pressurized fluid cylinders () during at least part of the use cycle of said cylinders. According to the invention, each of the cylinders () is provided with a valve () having an electronic device () including at least one sensor () for measuring the pressure (P) inside the cylinder (), a system () for storing/acquiring and processing data and an electromagnetic wave transmitter (), for example using radio frequency, designed for the remote transmission of at least one of the following items of information: the identity of the cylinder () and the pressure (P) measured inside said cylinder. The method includes a transmission step in which all of the cylinders () in the batch () transmit at least one item of information of the same type when they are in the same phase of the use cycle at the same time and a step in which the same-type items of information transmitted by the cylinders are compared for the automatic detection of an anomaly in the batch ().

Method for controlling a homogeneous batch of pressurized-fluid cylinders

The invention relates to an electronic pressure gauge for measuring the pressure inside a container, particularly a pressurized gas cylinder, said pressure gauge including: at least one pressure sensor; an electronic unit designed to acquire, store and process data; and at least one information device capable of transmitting at least one item of information. The pressure gauge also includes a first radio with a reception port, said first radio being connected to the electronic unit so as to receive external data in order to modify the operation or the configuration of the pressure gauge. The reception port of the first radio is designed to read data modulated in terms of the frequency and/or intensity of an external magnetic field at a first low frequency, for example a frequency between 50 and 300 khz.

Electronic pressure gauge for measuring pressure

The invention provides a method for controlling an electronic manometer for measuring pressure (p) inside a pressurized gas receptacle. The manometer comprises at least one pressure sensor, an electronic unit designed for the acquisition, storage and processing of data, and at least one information device device capable of transmitting at least one item of information (p).

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Viroflay, France

Fabrice Pin