| 摘要 |
The pipeline monitoring system uses continuous pressure monitoring of an inert gas contained within a space defined by the outer wall of the pipeline and the inner wall of a surrounding pipe. Pref. nitrogen at an over pressure of between 0.1 and 17.0 bar is used as the inert gas, with periodic circulation of the gas contained within the gap through a probe for detection of vaporised petroleum or the pipeline gas. |
