| 摘要 |
<p>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 sensor means for sensing fluid flow in the flow passage and providing 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 portion 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 portion from external vibration, whereby the flow meter is substantially insensitive to external vibration. With this invention, the vibration sensitivity of flow meters is significantly reduced by actually reducing the strain transmitted to the sensors, rather than electronically conditioning the sensor signal, to permit the employment of simpler less expensive electronic circuity.</p> |
