Spectroscopic ph measurement at high-temperature and/or...

G - Physics – 01 – N

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G01N 21/25 (2006.01) G01N 21/80 (2006.01)

Patent

CA 2575631

Devices and methods for measuring pH of a fluid at temperatures greater than 50°C and at pressures greater than 1 bar are provided that include: a fluid sample chamber to receive a fluid sample at a measurement pressure in operable communication with a first pressure regulating means; a dye chamber in fluid communication with the fluid sample chamber, and in operable communication with a second pressure regulating means; a light source and a detector in optical communication with the interior of the fluid sample chamber; and a spectral analyzer configured to analyze the optical density of a mixture of the fluid sample and dye. The first pressure regulating means and the second pressure regulating means are configured to ensure that the pressure does not drop below the measurement pressure.

Divulgation de dispositifs et de méthodes pour mesurer le pH d'un fluide à des températures supérieures à 50 degrés C et à des pressions supérieures à 1 bar. Ces dispositifs comprennent : une chambre d'échantillonnage du fluide pour recevoir un échantillon du fluide à une pression de mesure en communication exploitable avec un premier moyen de régulation de la pression; une chambre à colorant en communication fluide avec la chambre d'échantillonnage du fluide et en communication exploitable avec un deuxième moyen de régulation de la pression; une source de lumière et un détecteur en communication optique avec l'intérieur de la chambre d'échantillonnage du fluide; un analyseur de spectre configuré de manière à analyser la densité optique d'un mélange de l'échantillon de fluide et du colorant. Le premier et le deuxième moyens de régulation de la pression sont configurés de manière à s'assurer que la pression ne tombe pas sous la pression de mesure.

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