| 摘要 |
<p>A method and apparatus for sensing a flammable vapor are described herein. Initially, a first thermal conductivity of a vapor at a first temperature (202) and a second thermal conductivity of the vapor at a second temperature (202) can be determined (202). Thereafter, a ratio of the first thermal conductivity signal to that of the second thermal conductivity can be calculated (204) to obtain a primary 'vapor' signal. The 'vapor' ratio can then be compared (206) to an 'air' ratio (206) of air without the vapor at the first temperature (202) and the second temperature (202) to obtain (208) a secondary signal (210) thereof. Such a secondary signal can then be compared (212) to an alarm set-point value (212) to thereby determine whether the vapor comprises a flammable vapor and a risk-reducing action thereof be taken.</p> |
