| 摘要 |
<p>According to a first aspect of the invention, there is provided a detector, comprising: a first detector port 4 for passing fluid; second and third detector ports 6 and 8 for passing fluid, the second and third detector ports being connected to the first detector port; first and second sensors 30 and 32 for indicating a property of fluid in the second and third detector ports; and a controller 34 configured to compare the indications, and arranged to perform an action depending on a detected difference between the indications. The detector may be a leak detector and the property may be a pressure or flow rate. The action may comprise closing one of the ports or providing an audible of visual indicator. There may be provided a dual fluid flow system in which pressurised fluid flows into the detector through the first port and out through the second and third. The system may comprise a combiner which combines fluid form the second and third ports into a single flow and the combiner may be connected to the second and third ports via parallel conduits.</p> |
