SLIDE 1 OPTICAL GAS IMAGING
Sean Epps Heath Consultants Incorporated s.epps@heathus.com TGA 2015 Transmission Roundtable San Antonio, TX
www.heathus.com
SLIDE 2 INFRARED ENERGY?
- Every animate or inanimate body that
exists emits energy from its surface at all wavelengths.
- The energy is a form of electromagnetic
wavelengths
- Travels at speed of light
- Behaves in most cases as a visible light
- Can be reflected or concentrated using a
lens filter
- Energy increases as temperature increases
Conduction Convection Radiation
SLIDE 3
WHAT IS BLACKBODY RADATION
SLIDE 4
EXAMPLE OF IR REFLECTION
SLIDE 5
OGI SEES WHAT WE CAN NOT!!!
SLIDE 6
“Surf’s Up Dude…Lets Catch Some Waves!”
SLIDE 7 3-5u MWIR
Why the MWIR Region?
SLIDE 8
Atmospheric Absorption
SLIDE 9
Absorbency vs. Transmittance
SLIDE 10 The leaking gas temperature differs from the background temperature The OGI camera spectral band coincides with the emissivity (absorbance) spectra of the leaking gas
“I see Background…Not Gas?!”
SLIDE 11 KEY Components of an OGI Camera
DETECTOR and COOLER ASSEMBLY NARROW IR BANDPASS FILTER (3.2-3.4 µm) INFRARED LENS
(75 mm lens pictured)
DETECTOR (HgCdTe/InSb semiconductor) STIRLING CYCLE COMPRESSOR
SLIDE 12
IR Lens Size and Performance
SLIDE 13 19mm lens 50mm lens 75mm lens 150mm lens
Same scene from 150 meters away
SLIDE 14
FL/FOV COMPARISON OF LEAK
SLIDE 15
What does a leak look like?
SLIDE 16
SLIDE 17
SLIDE 18 Merlin “Hawk” 2003 FLIR GasFindIR 2006 OPGAL EyeCGas 2010 FLIR GF320 2009
D E V E L O P M E N T
SLIDE 19 APPLICATION
- INCIDENT RESPONSE
- ENVIRONMENTAL STEWARTSHIP
- PIPELINE SAFETY
- ASSET INTEGRITY
- PRODUCT LOSS PREVENTION
SLIDE 20 OPGAL EYE-C-GAS IMAGING CAMERA
- SAFE: Certified for use in Class 1 Div II Hazardous Locations
- RUGGEDIZED and FORGIVING: IP65 rated for dust and water intrusion
- SIMPLE for anyone to operate and QUICKLY pinpoint emission sources
To help improve in the SAFETY, PRODUCTIVITY and INTEGRITY of your daily operations
SLIDE 21
FUTURE DEVELOPMENTS IN OGI
SLIDE 22
QUESTIONS?
