Pressure source with constant relative increase of pressure...

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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F16K 37/00 (2006.01)

Patent

CA 2351356

The invention relates to a method and apparatus for determining the switching pressure of a safety appliance which is adapted to safeguard an installation against exceeding or falling below a gas pressure, wherein an increasing pressure is applied to the safety appliance (1), wherein the supplied increasing pressure rises in accordance with an exponential function. Owing to the constant relative increase in the pressure supplied to the safety appliance, it is no longer necessary beforehand to take into account settings of the safety appliance. Errors resulting from incorrect settings by the user are hereby prevented.

L'invention concerne un procédé et un appareil de détermination de la pression de mise en fonctionnement d'un dispositif de sécurité conçu pour empêcher une pression de gaz dans une installation de dépasser un seuil prédéterminé ou de descendre au-dessous de ce seuil, une pression croissante étant appliquée au dispositif (1) de sécurité et la pression croissante appliquée étant augmentée selon une fonction exponentielle.n raison de l'augmentation relative constante de la pression appliquée au dispositif de sécurité, il devient inutile de tenir compte au préalable des réglages du dispositif de sécurité, ce qui permet d'éviter des erreurs dues à un réglage incorrect par l'utilisateur.

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