US 12,320,791 B2
Creating mass flow parity in a variant multi-channel sampling system
Jeffrey Michael Headrick, Alamo, CA (US); Wei Jian Chin, Sunnyvale, CA (US); and Chris W. Rella, Sunnyvale, CA (US)
Assigned to Picarro, Inc., Santa Clara, CA (US)
Filed by Picarro, Inc., Santa Clara, CA (US)
Filed on Feb. 28, 2023, as Appl. No. 18/115,534.
Application 18/115,534 is a continuation of application No. 16/691,222, filed on Nov. 21, 2019, abandoned.
Prior Publication US 2023/0204553 A1, Jun. 29, 2023
Int. Cl. G01N 33/00 (2006.01); G01F 5/00 (2006.01); G01F 15/00 (2006.01)
CPC G01N 33/0016 (2013.01) [G01F 5/005 (2013.01); G01F 15/005 (2013.01)] 19 Claims
OG exemplary drawing
 
1. Apparatus for providing a gas sample to analysis instrumentation, the apparatus comprising: an automatically controlled gas flow system configured to combine all or a portion of gas flows from two or more system inputs into a combined gas flow provided to the gas analysis instrumentation; wherein the automatically controlled gas flow system has one mode of or more operating modes that include a first operating wherein the combined gas flow includes an equal mixture gas flows from a selected two or more of the system inputs; wherein the equal mixture of gas flows is provided by equalizing pressures of gas flows from the selected two or more that of have the system inputs that are provided to gas flow paths the same gas flow properties; wherein the pressures of gas flows are equalized using two bypass valves, wherein each system input is connected to a respective bypass valve.