Gas bubble detection in fluid lines by means of pulsed Doppler ultrasound.
A pulsed Doppler instrument running at 1.5 MHz resonance frequency was used for detection of microbubbles within a recirculating fluid line. Glass beads of nominal 200 microns were injected to get a statistical calibration level of the set-up. This is achieved by identifying the peak intensity of the bubble size histogram which reflected the microsphere size.
D005740:Gases / Q000032:analysis*; D008954:Models, Biological; D014465:Ultrasonics
D005740:Gases