A commercial liquid product is pumped from the large white bucket (shown at the start of the clip), through overhead pipes, and then into downpipes. The camera view follows the route through these pipes. If bubbles are present in the liquid, the product is ruined. The video clip shows the testing of a device, invented By Prof. Leighton, in a real factory. A portable ultrasonic sensor is clamped onto one side of the pipe, and a receiver on the other (the camera zooms into these). If bubbles are not present, a green light is shown on the PC to indicate that the factory can continue operation. If a red light shows (film cuts to such a circumstance), bubbles are present in the pipe to which the detector is clamped. The source of the bubbles can be traced to a pump, or bend in the pipe, by re-siting the detector to various sites along the pipeline (TG Leighton, GT Yim, MD Simpson).
This page was last updated by TG Leighton, 6 August 2004