Apparatus for automated measurement of ammonia concentration in

Measuring and testing – Gas content of a liquid or a solid – Particular separator

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423352, G01N 700

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active

057673837

ABSTRACT:
A process for automated measurement of ammonia in a gas mixture containing ammonia gas and one or more water-insoluble gases includes providing a water reservoir adapted for supplying water therefrom through a first solenoid valve and providing a measurement vessel adapted for receiving water. The vessel is adapted for draining the water therefrom through a second solenoid valve. The vessel is also adapted for receiving the gas mixture through a third solenoid valve and purging the gas mixture from the vessel through a fourth solenoid valve. The vessel is adapted for maintaining the gas in the vessel and receiving water thereinto in an amount sufficient to dissolve the ammonia gas contained in the gas mixture, into the water, and allowing a differential pressure between the gas mixture and the water containing dissolved ammonia to be measured. The process also includes providing a measurement vessel adapted for allowing height of water within the vessel to be measured, providing means for measuring height of water within measurement vessel, and providing recording means for converting the measured height signal to an ammonia concentration value.

REFERENCES:
patent: 5131260 (1992-07-01), Brand et al.
patent: 5222032 (1993-06-01), Fleming
DIN: 644760229, Chem Instr vol. 5, No. 2, pp. 79-90, 1973-1974, Novak et al,.

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