G - Physics
01
F
73/125, 73/132,
G01F 15/18 (2006.01) G01F 1/32 (2006.01)
Patent
CA 1200403
ABSTRACT OF THE DISCLOSURE This invention provides an improved flow meter which comprises a housing defining a fluid flow passage and a sensor body opening which opens into the fluid flow passage; flow sen- sor means for sensing fluid flow in the flow passage and provid- ing a signal in relation to the fluid flow, the flow sensor means being in the fluid flow passage; and a sensor body having a mounting portion, a strain relief portion and a flow sensor supporting portion, the mounting portion being mounted to the housing external to the housing and the sensor supporting por- tion being in the fluid flow passage and supporting the flow sensor means, the strain relief portion being intermediate the mounting portion and the sensor supporting portion, the strain relief portion further being in the sensor body opening and adapted to relieve induced strain of the sensor supporting por- tion from external vibration, whereby the flow meter is substan- tially insensitive to external vibration. With this invention, the vibration sensitivity of flow meters is significantly reduced by actually reducing the strain transmitted to the sen- sors, rather than electronically conditioning the sensor sig- nal, to permit the employment of simpler less expensive elec- tronic circuity.
439543
Burlage Brian J.
Lenz Gary A.
Wiklund David E.
Fisher Controls International Llc
Mcfadden Fincham
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