Regulator diagnostics system and method

G - Physics – 05 – D

Patent

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Details

G05D 16/06 (2006.01) G01F 1/36 (2006.01) G01F 1/40 (2006.01) G01F 1/42 (2006.01) G05D 16/20 (2006.01)

Patent

CA 2377540

Apparatus for performing diagnostics through a regulator is disclosed. The pressure regulator is disposed in a fluid flow passage and has a throttling element (32) moveable in the flow passage. A stem (30) is attached to the throttling element. The apparatus includes a first pressure sensor (34) for measuring pressure upstream of the throttling element, a second pressure sensor (35) for measuring pressure downstream of the throttling element, and a travel sensor (44) for detecting the position of the throttling element. A processor is provided which includes a stored algorithm for determining flow rate based on the measured pressure and travel values, and an alarm routine for generating logic alarms based on the measured operating parameters.

L'invention concerne un dispositif servant à effectuer des diagnostics à l'aide d'un régulateur de pression. Ce régulateur se trouve dans un passage d'écoulement et comprend un élément d'étranglement (32) pouvant se déplacer dans le passage d'écoulement. Une tige (30) est fixée à l'élément d'étranglement. L'appareil comprend un premier capteur de pression (34) servant à mesurer la pression en amont de l'élément d'étranglement, un second capteur de pression (35) servant à mesurer la pression en aval de l'élément d'étranglement, et un détecteur de déplacement (44) destiné à détecter la position dudit élément d'étranglement. L'invention concerne également un processeur comprenant un algorithme stocké destiné à calculer le débit d'écoulement sur la base de la pression mesurée et des valeurs de déplacement, et une routine d'alarme destinée à produire des alarmes logiques sur la base des paramètres de fonctionnement mesurés.

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