| 摘要 |
<p>A vibration densitometer havin a strain gauge pick-up serves at least four functions one at a time or in any combination of two, three or four. The strain gauge is bonded to or may embody a vibrating vane or body to be immersed in a fluid. The strain gauge may be bonded to a vane with glass or an epoxy or other uniting agent. If glass is used, the densitometer may undergo unusually high temperatures and still perform reliably and accurately. The strain gauge may be used (1) as a pick-up in an electromechanical oscillator embodies in the densitometer, (2) as a portion of a fluid temperature indicator, (3) for instrument frequency error correction (computable in two ways as a function of temperature, and (4) for producing an indication of what the fluid density would be at a selected constant temperature.</p> |
