Patent ID: 11885784
Assignee: LOCI CONTROLS, INC.
Field: Measurement (Instruments)
Classification: CPC G  B  E  Y | IPC B  E  G

Claim 19:
20. A method performed by an apparatus for sampling landfill gas extracted from a landfill and flowing through a pipe comprising a section having at least one gas sampling port, the apparatus comprising a sensor chamber; at least one sensor device disposed in the sensor chamber, a gas flow passage between the at least one gas sampling port and the at least one sensor device, at least one fluid knock-out disposed in the gas flow passage, and at least one controller, the method comprising:
flowing landfill gas extracted from the landfill from the section of the pipe to the at least one sensor device via the gas flow passage;
separating, with the at least one fluid knock-out, at least one fluid from the landfill gas extracted from the landfill flowing from the at least one gas sampling port to the at least one sensor device; and
reversing, with the at least one controller, a direction of flow through the at least one fluid knock-out of the at least one fluid separated from the landfill gas extracted from the landfill.