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

L'air Liquide

Air Liquide Medical Systems

Air Liquide Santé France

Philippe Deck

Antoine Frenal

Renaud Ligonesche

Philippe Pisot

Emmanuel Baune

Cyril Manscourt

Georges Delode

Philippe Bernard

Christian Bleys

Fabrice Pin

Wilfried Legeron

Bartolomeo Colturri

Gerard Vagnard

Jean-Philippe Dhalluin

Christophe Knapik

Philippe Briet

Luca Valsasina

Emmanuel Felix

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

An installation for packaging a gaseous NO/Nmixture into at least one container from a source () of gaseous NO and a source () of gaseous nitrogen is disclosed. The installation uses at least one filling system () comprising one or more filling stations () for gas containers (). A first gas line () is fluidically connected to the source () of gaseous NO and to the filling system (), and a second gas line () is fluidically connected to the source () of gaseous nitrogen and to the filling system (). The first gas line () and the second gas line () each has a mass flow meter (), each mass flow meter () being connected () to a control device () collaborating with each mass flow meter ().

Installation for packaging NO using mass flow meters

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).

Method for controlling an electronic pressure gauge and pressure gauge therefor

An installation for filling cylinders with gas whose nature is in accordance with a predetermined specification, it comprises a plurality of sources of supply (,), a network of control valves (,), selectively connecting the outlet of each supply gas source to the cylinders, and a unit (,) for controlling the network of valves adapted to control the condition of the valves. The control unit (,) comprises a unit (,) for inputting into a program constituted by a sequence of procedures, each procedure being an elemental task that can be performed by the valves under the control of the control unit (,). It moreover comprises a unit (,) for processing the successive procedures constituting the program. They are adapted to control the network of valves (,) by the sequential performance of the elemental tasks described successively in the sequence of operations.

Installation for filling a container with gas

A silicocalcareous mass obtained from an aqueous paste with a base of natural silica and quicklime. The mass is at least doubly stabilized by two mineral suspending agents, and reinforced by a fibrous reinforcing agent. The suspending agent comprises cellulose fibers which may be partially chemically delignified, partially mechanically delignified, or delignified by a combination of chemical and mechanical processes, introduced in an amount of from about 3 to about 30% by weight of the solids. The porous silicocalcareous masses are used for lining containers for gas storage, particularly for containers for storing acetylene gas.

High-porosity silicocalcareous mass for storing of gas, and production

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Montreuil, France

Philippe Deck