Remote gas detection
A method for remote gas detection are used to an increasing extent by the gas industry for regular leak check of lines and components, and can natural gas (or its main constituent methane ) detect from a distance. Each gas mixture has unique spectral properties that enable identification.
There are active and passive remote gas detection methods, each of which is used in different areas of application.
Remote gas detection method
Active
Active systems, such as lidar , have a transmitter and a receiver. With active processes, signals are sent out which are weakened by the trace gas (e.g. methane) being sought. The signals are collected again and analyzed for changes. The German Association for Gas and Water has passed a technical rule (leaflet G 501) and expressly allows air-based remote gas detection methods as a form of leak test.
Active remote gas detection methods are primarily used for leak testing of underground natural gas pipelines .
Passive
Passive systems only have a receiver and pick up signals from the environment. In passive processes, e.g. B. infrared radiospectometry, electromagnetic radiation is analyzed for the existence of an object (atom, molecule) (see FTIR spectrometer ).
Passive remote gas detection methods are used to check aboveground, gas-carrying components in regularly recurring leakage tests.
Individual evidence
- ↑ Leaflet on requirements for airborne remote gas detection methods ( memento of the original from 23 September 2015 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 226 kB)
