| 摘要 |
The present invention relates to a method for detecting bubbles in a tube conveying a liquid, characterised in that it consists: - in emitting a first light beam (8) which is directional and non-diametral in a first plane (P) orthogonal to the axis of symmetry of the tube; - in placing a first light beam detector in the said first orthogonal plane (P), symmetrically with respect to the said axis of symmetry; - in detecting the presence or absence of air by analysing the parameters of the light (11) received by the said first detector. <IMAGE>
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