US 11,885,784 B2
Designs for enhanced reliability and calibration of landfill gas measurement and control devices
Andrew Campanella, Somerville, MA (US); Ian Martin, Higganum, CT (US); Joseph G. Michels, Pocono Summit, PA (US); Nathan Pallo, Castro Valley, CA (US); and Peter Quigley, Duxbury, MA (US)
Assigned to Loci Controls, Inc., Wareham, MA (US)
Filed by Loci Controls, Inc., Wareham, MA (US)
Filed on Jun. 9, 2021, as Appl. No. 17/343,317.
Application 17/343,317 is a continuation of application No. 15/478,583, filed on Apr. 4, 2017, granted, now 11,067,549.
Application 15/478,583 is a continuation of application No. PCT/US2017/020196, filed on Mar. 1, 2017.
Claims priority of provisional application 62/301,922, filed on Mar. 1, 2016.
Prior Publication US 2021/0372977 A1, Dec. 2, 2021
Int. Cl. G01N 33/00 (2006.01); G01N 1/22 (2006.01); B09B 3/80 (2022.01); B09B 1/00 (2006.01); E21B 36/00 (2006.01); E21B 47/06 (2012.01); E21B 49/08 (2006.01); E21B 47/07 (2012.01)
CPC G01N 33/0006 (2013.01) [B09B 1/006 (2013.01); B09B 3/80 (2022.01); E21B 36/00 (2013.01); E21B 36/003 (2013.01); E21B 47/06 (2013.01); E21B 49/08 (2013.01); G01N 1/2294 (2013.01); G01N 33/004 (2013.01); G01N 33/0036 (2013.01); E21B 47/07 (2020.05); E21B 49/0875 (2020.05); Y02C 20/20 (2013.01); Y02W 30/20 (2015.05)] 28 Claims
OG exemplary drawing
 
1. 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, wherein landfill gas extracted from the landfill is configured to flow from the section of the pipe to the at least one sensor device via the gas flow passage;
at least one fluid knock-out disposed in the gas flow passage and configured to separate 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
at least one controller configured to reverse 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.