Here is a video from SpectraSensors on measuring moisture in natural gas streams. Their technology is essentially absorption spectroscopy. What makes them different is that their instrument does not come into contact with the gas, because it is based on light technology.
Thus, SpectraSensors states that the instrument does not need maintenance, nor calibration, nor consumables. Please click on the image above to view the video.
CONTACT
Scott Sutherland
ssutherland@spectrasensors.com
http://www.spectrasensors.com