The following chart shows and compares the MDLR (Minimum Detectable Leak Rate) value of different hydrocarbons for each SENSIA OGI technology.

MDLR (g/h) Mileva 33 Caroline
Benzene 2.1 6.3
Butane 0.15 0.6
Ethane 0.34 1.02
Ethanol 0.5 1.5
Ethylbenzene 0.9 2.7
Ethylene 3.4 1.02
Heptane 1.2 4.8
Hexane 1 3
Isoprene 6.4 19.2
MEK 2.5 7.5
Methane 0.35 1.4
Methanol 2.1 6.3
MIBK 1.4 5.6
Octane 0.8 3.2
Pentane 2 8
1-Pentene 4.3 12.9
Propane 0.15 1.43
Propylene 2.1 8.4
Toluene 3 9
Xylene 0.8 2.4

Considerations related to the MDLR determination for the SENSIA OGI’s

  • Leak observation is done at distance short enough to ensure the leak resolvancy with various pixels
  • Characterization test conditions:

o    Background temperature controlled

o    Outlet Orifice Diameter= ¼’’

o    CH4 diluted with N2 (25% methane)

  • Gas Detection condition using High Sensitivity Mode