| 摘要 |
The microwave embolus detector is a device that employs microwaves to detect the presence of air emboli in a flow of paste, which is passed through a Teflon tube or hose, as these microwaves are absorbed to a greater or lesser degree by the paste itself but are not absorbed by air. The level of power received by the receiver is constant provided the flow is homogenous. However, when a bubble appears, diffusion takes place as air does not absorb the microwaves, thus the power received will alter as regards the full scale signal of the homogenous flow. Diffusion may also be caused by the presence of lumps.
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