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Flow sensor with enhanced flow range capability

  • US 8,695,417 B2
  • Filed: 01/31/2011
  • Issued: 04/15/2014
  • Est. Priority Date: 01/31/2011
  • Status: Active Grant
First Claim
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1. A flow sensor assembly, comprising:

  • a housing including an inlet flow port, an outlet flow port, and a fluid channel extending between the inlet flow port and the outlet flow port, the housing including one or more partitions positioned in the fluid channel to define two or more fluid sub-passages through the fluid channel, wherein the one or more partitions are positioned in the fluid channel to provide cross-sectional areas for each of the two or more fluid sub-passages such that a volume of fluid flow through each of the two or more fluid sub-passages is substantially the same, wherein the two or more fluid sub-passages are configured to laminarize the fluid flow; and

    a flow sensor in fluid communication with one of the two or more fluid sub-passages of the fluid channel, the flow sensor configured to sense a measure related to a flow rate of a fluid flowing through the corresponding fluid sub-passage, which is related to the flow rate of the fluid flowing through the fluid channel.

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