| 摘要 |
The oscillometer has a pipe (2) which is vibrated between nodes (a,b) at holding devices (3a,3b) by an oscillation generator (5) fitted with an adaptor (7a) and a magnet to two carriers (4a,4b) screwed or soldered to the holding devices. Magnetic sensors (6a,6b) of speed, displacement or acceleration are arranged symmetrically. The sensors are wired to a signal-processing circuit (9) which produces a quantitative output (Qm) from the phase difference (92) between the speed sensor signals. Another circuit (91) calculates the ratio of the resonant frequencies of two modes, which is used in conjunction with a temperature calculation (93) to obtain a correction (94) for the phase-difference signal. |
