Method and apparatus for determining the calorific value of a na

Details Method and apparatus for determining the calorific value of a na Method and apparatus for determining the calorific value of a na

1998-06-05

2000-12-05

Rosenberger, Richard A.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

250343, G01N 2125

Patent

active

061574554

ABSTRACT:
Natural gas whose calorific value is to be determined is illuminated with a light beam that is applied by a measurement head and that defines three measurement bands with different wavelength ranges each having a bandwidth of 10 nm to 20 nm and all situated in the near infrared. The intensity of each light beam is measured after it has passed through the gas, and the calorific value of the natural gas is computed in situ and in real time on the basis of the optical absorption values obtained by measuring the intensities of the light beam after it has passed through the gas.

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patent: 5822058 (1998-10-01), Adler-Golden et al.

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