The composition of pipeline natural gas varies widely by source but typically reflects a mixture of simple hydrocarbon gases with a few other components including water vapor, carbon dioxide, helium, nitrogen, and sometimes hydrogen sulfide (H2S). Hydrogen sulfide can be especially problematic because it is both toxic and corrosive, representing one of the largest threats to pipeline integrity when stress corrosion cracking occurs. Hydrogen sulfide detection is an integral element of natural gas analysis from the wellhead to burner in North America and throughout the world.
The OMA-300 is a highly field-proven solution for fast response H2S measurements in several natural gas applications. Due to high accuracy and dynamic range, the OMA is the analyzer of choice both for high-level and ow-level H2S ranges. The OMA provides fast response measurement with less downtime than alternatives for more effective control in a natural gas process. When compared against other photometers, the OMA provides more accurate measurement of a wider concentration range due to the dispersive “full-spectrum” acquisition at high resolution.