A double beam IR detector is developed for light hydrocarbons concentration measurement in emissions from
storage vessels during oil and oil products storage and transportation. It was concluded on the basis of chromatogram
that main crude losses from evaporation are the share of hydrocarbons light ends from methane to decane. Detector
operation is based on spectral transparency measurement in the infrared spectra absorption range. Operational
wavelength of infrared radiation makes 3.4 μm. measurement principle is based on concentration calculation proceed
from molecule absorption cross-section, optical path length between light emitted diode and reference and signal
photodiodes as well as from value of measured signal transmitted through gaging volume. The novel of offering device
is an actual paraffin hydrocarbons concentration measurement in emissions and continuous and automatic environment
quality control.
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