Mass flow control in a process gas analyzer

G - Physics – 01 – N

Patent

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G01N 30/68 (2006.01) G01N 27/62 (2006.01) G01N 33/00 (2006.01)

Patent

CA 2465851

A sample conditioner system (108) carries a real-time sample (104) of a process gas through a chromatograph column (112) in an analyzer. A flame ionization detector (FID)(120) is coupled to the chromatograph column (112) and generates a temperature output and an output indicating sample ions (123). A processor (122) generates a real-time process gas analysis (102) and a mass flow set point. A flow controller (132, 134, 136, 138) controls mass flow of a stream of gas to the FID (120).

Dans un analyseur, un système de conditionnement d'échantillon (108) fait passer un échantillon en temps réel (104) de gaz de traitement dans une colonne de chromatographie (112). Un détecteur à ionisation de flamme (120) couplé à la colonne de chromatographie (112) génère une sortie de température et une sortie indiquant des ions d'échantillon (123). Un processeur (122) établit une analyse de gaz de traitement en temps réel (102) et un point de réglage de débit massique. Un régulateur de débit (132, 134, 136, 138) régule le débit massique d'un courant de gaz allant au détecteur à ionisation de flamme (120).

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