Patent ID: 8409504

Claim:
A device for analyzing a fluid, comprising: an analyzer; and a feed system for supplying said analyzer with instrumentation gases, characterized in that the feed system comprises at least one mixer that generates said instrumentation gas and at least one purifier located downstream of said at least one mixer and upstream of the analyzer, the feed system further defined as comprising: four instrument calibration sources containing hydrogen, helium, oxygen and nitrogen (G1-G4) in fluid communication with the feed system and wherein the feed system is configured to form two instrumentation gas mixtures (G1-2, G3-4), one being a hydrogen/helium mixture and the other an oxygen/nitrogen mixture; the at least one mixer comprises first and second mixers, the first mixer configured to mix the hydrogen and helium and the second mixer generates the configured to mix the oxygen and the nitrogen; the at least one purifier comprises first and second purifiers; the first purifier being located downstream of the first mixer and upstream of the analyzer; and the second purifier being located downstream of the second mixer and upstream of the analyzer.