| 摘要 |
A design Bourdon tube manometer, wherein tube deflection is detected by sensing the arc subtended by a light beam reflected from a mirror on the Bourdon tube, has a fixed light source and a null reading reflected beam detector. The Bourdon tube itself is mounted on a mounting member which is selectively movable with respect to a frame member on which is mounted the null reading detector. This permits linearizing the response of the instrument. Initially, the range of the instrument is adjusted by moving the mirror parallel to the source light beam to produce a read-out corresponding to the upper limit of the pressure range desired to be measured. Then the mirror is moved perpendicular to the source light beam to produce a linear response at a point at approximately the mid-point of such range.
|
