公开(公告)号：US20210156835A1

公开(公告)日：2021-05-27

申请号：US16691222

申请日：2019-11-21

Applicant: Picarro, Inc.

Inventor： Jeffrey Michael Headrick ,  Wei Jian Chin ,  Chris W. Rella

IPC: G01N33/00 ,  G01F5/00 ,  G01F15/00

Abstract: An equal mixture of gas flows from multiple inputs is provided to gas analysis instrumentation, despite the unequal gas flow properties of the inputs often seen in practice. E.g., due to unequal input sample line lengths. We provide gas flow symmetry into a gas manifold that provides the output(s) to the gas analysis instrument(s). Such symmetry has two parts—equal gas flow properties from a set of reference points (one reference point for each input) to the manifold, and equal pressures at the reference points. Such equal pressures can be provided for unequal input gas flow properties by having a bypass valve for each input controlled so as to equalize the pressures.

公开(公告)号：US20230204553A1

公开(公告)日：2023-06-29

申请号：US18115534

申请日：2023-02-28

Applicant: Picarro Inc.

Inventor： Jeffrey Michael Headrick ,  Wei Jian Chin ,  Chris W. Rella

IPC: G01N33/00 ,  G01F15/00 ,  G01F5/00

CPC classification number: G01N33/0016 ,  G01F15/005 ,  G01F5/005

Abstract: An equal mixture of gas flows from multiple inputs is provided to gas analysis instrumentation, despite the unequal gas flow properties of the inputs often seen in practice. E.g., due to unequal input sample line lengths. We provide gas flow symmetry into a gas manifold that provides the output(s) to the gas analysis instrument(s). Such symmetry has two parts—equal gas flow properties from a set of reference points (one reference point for each input) to the manifold, and equal pressures at the reference points. Such equal pressures can be provided for unequal input gas flow properties by having a bypass valve for each input controlled so as to equalize the pressures.