Tokyo Gas Engineering Solutions Corporation Laser Methane Mini, Инструкции по эксплуатации

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1. Outline and Principle
1.1 Outline
This product is a handheld gas detector for remote detection of
methane and methane-containing gases (natural gas or similar). Gas
leakage and accumulation within approximately 30 meters can be
detected quickly by directing a laser beam at the area to be inspected.
The measuring point is illuminated by a red guide light clearly visible,
and then the measured value of methane is displayed on the display in
real time.
1.2 Principle
This product is based on Infrared Absorption Spectroscopy using a
semiconductor laser for methane detection. The integrated
concentration of methane between this product and the target point is
measured by transmitting a detection laser beam towards the target
point (gas piping, ceiling, wall, floor, ground, etc.) then detecting a
fraction of the diffusely reflected beam from that target point. The
measured value is expressed by a methane column density (ppm·m):
the methane concentration (ppm) multiplied by the thickness (m).