Resistive wire mass flow meters

Details Resistive wire mass flow meters Resistive wire mass flow meters

Category

G - Physics

Subcategory

01

Subsubcategory

F

IPC codes

G01F 1/698 (2006.01)

Type

Patent

Patent number

CA 2374637

Description

The invention concerns flow meter comprising a resistive wire (18) placed in the path of a fluid whereof the flow rate is to be measured, means (30) for applying to the wire current pulses, measuring means for determining the cooling speed of the wire between said pulses. The invention is characterised in that it comprises processing means (30) for determining a cooling parameter and for deducing from said cooling parameter data concerning a possible operational drift or anomaly.

Débitmètre massique, du type comprenant un fil résistif (18) placé dans le trajet d'un fluide dont on souhaite mesurer le débit, des moyens (30) pour appliquer au fil des impulsions de courant, des moyens de mesure pour déterminer la vitesse de refroidissement du fil entre lesdites impulsions, caractérisé en ce qu'il comporte des moyens de traitement (30) aptes à déterminer un paramètre de refroidissement et pour déduire de ce paramètre de refroidissement une information relative à une éventuelle dérive ou anomalie de fonctionnement.

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