QLM Awarded New Patent, US 12,339,264 for Methane Calibration with a Miniature Internal Gas Cell

QLM has been awarded another new patent, US 12,339, 264, for how our lidar camera calibrates every  measurement it makes of methane emissions. Every camera contains a miniature permanently glass-sealed gas cell inside its transceiver that the lidar laser beam passes through before leaving thecamera. We use that as a constant reference standard for the methane molecular absorption to know that our laser wavelength is locked onto methane and never seeing water or carbon dioxide. And we also measure the amount of methane in the cell, so we always know exactly how much methane we are seeing in the air and how big a leak we are reporting. Sealed glass cells are quite insensitive to changes in environment and over time, and are inherently traceable back to fundamental physical properties, so mean our cameras don’t need regular recalibration services, they hold the truth  in their hearts.