Message Board Thread - "Is nitrogen purge gas detectable?"

Back to Threads | Back to Forums

TitleByPosted On
Is nitrogen purge gas detectable? BuggIR 9/29/2010
If a gas/oil facility uses a nitrogen purge gas for commissioning new lines and equipment is this type of gas detectable with the GasFindIR camera to find leaks?
 
Re:Is nitrogen purge gas detectable? ron lucier 9/30/2010
BuggIR wrote:
s/oil facility uses a nitrogen purge gas for commissioning new lines and equipment is this type of gas detectable with the GasFindIR camera to find leaks?
We cannot see any of the noble gasses. The reason we can see the hydro carbons is the resonance of the C-H bond. Think of a couple weights on the end of a spring. The oscillations of a spring would have a specific frequency based on the mass of the weights (elements) and the strength of the spring (binding energy). This results in a resonance near 3.3 micrometers which is where we filter the IR camera. There are no bonds with single atoms of just H, O, N, etc. We sure wish there was a way to detect these but there isn't via optical gas imaging!
 
Re:Is nitrogen purge gas detectable? Paul 9/30/2010
ron lucier wrote:
We cannot see any of the noble gasses. The reason we can see the hydro carbons is the resonance of the C-H bond. Think of a couple weights on the end of a spring. The oscillations of a spring would have a specific frequency based on the mass of the weights (elements) and the strength of the spring (binding energy). This results in a resonance near 3.3 micrometers which is where we filter the IR camera. There are no bonds with single atoms of just H, O, N, etc. We sure wish there was a way to detect these but there isn't via optical gas imaging!
Thanks Ron. I'll the technical reason taken from Wiki:
"Molecular nitrogen is largely transparent to infrared and visible radiation because it is a homonuclear molecule and thus has no dipole moment to couple to electromagnetic radiation at these wavelengths."
 
Re:Is nitrogen purge gas detectable? BuggIR 9/30/2010
BuggIR wrote:
s/oil facility uses a nitrogen purge gas for commissioning new lines and equipment is this type of gas detectable with the GasFindIR camera to find leaks?
Hey great explanation, makes total sense. I'll be taking the GasFindIR training soon so I can learn more. Sincere thanks!
 


  • Back to Threads
  • Back to Forums

     

  •   Copyright © FLIR Systems, Inc 2012