| 摘要 |
<p>A transit time differential acoustic flowmeter 11, particularly suitable for use in medical and therapeutic environments, has acoustic transducers 21, 22 such as piezoelectric transducers which are acoustically coupled to the fluid flowing in a flow tube 12 through the wall of the flow tube itself. The flow tube is demountable from the flowmeter and can be disconnected from the external circuit delivering and carrying away the fluid the flow of which is to be detected. Also disclosed is a flow tube having acoustic coupling and retaining means and an acoustic flowmeter comprising a removable / replaceable flow tube.</p> |
