| 摘要 |
A flow sensor assembly includes a housing (12) that defines an inlet port (16), an outlet port (18), a main channel (22) and a bypass channel (28). An inlet flow channel (34) fluidly connects the inlet port (16) of the flow sensor assembly to the main channel (22) and an outlet flow channel (40) fluidly connects the main channel (22) to the outlet port (18). A bypass feeder input channel (46) fluidly connects the main channel (22) to the bypass channel (28) and a bypass feeder output channel (52) fluidly connects the bypass channel (28) to the main channel (22). In some instances, at least 40 percent of an input pressure differential applied between the inlet port and the outlet port of the flow sensor assembly drops across the inlet flow channel and the outlet flow channel collectively. A sensor (10) is exposed to a fluid in the bypass channel (28) and senses a measure related to a flow rate of the fluid flowing through the bypass channel. The housing (12) may be configured to accommodate a relatively high pressure drop between the inlet port (16) and the outlet port (18), while still providing a good flow measurement with relatively low noise, having laminar flow in the bypass channel, and a relatively small mounting footprint. |
