Battery-powered, differential infrared absorption sensor for methane, ethane, and other hydrocarbons. [For monitoring LNG spill dispersion tests]
Conference
·
OSTI ID:5768259
This report presents the performance goals, design considerations, and physical details of the miniature infrared absorption sensor being developed for the US DOE's Liquefied Natural Gas Spill Safety Program. The sensor is lightweight, battery-powered, portable, self-contained, and able to interface readily to large-array data systems. Essentially a precision infrared differential spectrometer capable of operating over the full range of gas concentrations expected in the spill diffusion tests, the sensor is expected to cost less than $7000 per unit. The present design of this open-cell, fast-response sensor allows it to measure two components, but it can be modified to measure additional components at a reduced sampling frequency. To minimize temperature effects and power consumption, the sensor has a single-source, single-detector design which includes a rotating chopper-filter wheel. A CMOS microprocessor interfaced with a fast arithmetic chip is used to linearize sensor output and correct for component interference.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5768259
- Report Number(s):
- UCRL-83317; CONF-790887-1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
030800 -- Natural Gas-- Environmental Aspects
033000* -- Natural Gas-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ACCIDENTS
ALKANES
CRYOGENIC FLUIDS
ENERGY SOURCES
ETHANE
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GAS SPILLS
GASES
HYDROCARBONS
INFRARED SPECTRA
LIQUEFIED NATURAL GAS
MEASURING INSTRUMENTS
METHANE
MONITORING
NATURAL GAS
ORGANIC COMPOUNDS
SPECTRA
SPECTROMETERS
030800 -- Natural Gas-- Environmental Aspects
033000* -- Natural Gas-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ACCIDENTS
ALKANES
CRYOGENIC FLUIDS
ENERGY SOURCES
ETHANE
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GAS SPILLS
GASES
HYDROCARBONS
INFRARED SPECTRA
LIQUEFIED NATURAL GAS
MEASURING INSTRUMENTS
METHANE
MONITORING
NATURAL GAS
ORGANIC COMPOUNDS
SPECTRA
SPECTROMETERS