| 摘要 |
<p>Flow meter (1, 11) of axially symmetrical design, incorporating electroacoustic transducers (10, 10a) and a phase-difference evaluation system for each of two transmission bursts (13, 13a) which are transmitted in or against the direction of flow (12) respectively. The measurement section is formed by a bore (8) in a replaceable insert head (7). <IMAGE></p> |
