US PATENT SUBCLASS 374 / 123
.~.~.~ Transparent material measurement or compensation (e.g., spectral line, gas, particulate suspension

Current as of: June, 1999
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374 /   HD   THERMAL MEASURING AND TESTING

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
120  DF  .~ In spaced noncontact relationship to specimen {3}
121  DF  .~.~ By thermally emitted radiation {11}
123.~.~.~ Transparent material measurement or compensation (e.g., spectral line, gas, particulate suspension

DEFINITION

Classification: 374/123

Transparent material measurement or compensation (e.g., spectral line, gas, particulate suspension):

(under subclass 121) Subject matter including compensation for radiation transmitted through or blocked from the thermally emitting material.

(1) Note. Measurements involving spectral line intensity or inversion, as well as reference emitters from transparency compensation are classified herein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

129, for radiation thermometers with reference standards, in general.

161+, for temperature measurement involving a change in an optical property, absent evaluation of thermally emitted radiation.