초록 ▼

A method for detecting, locating and measuring leaks in a test object is described using a differential absorption technique. In a preferred embodiment the test object is first pressurized with a light absorbing fluid. The test object is then illuminated with a light source at a wavelength which is

A method for detecting, locating and measuring leaks in a test object is described using a differential absorption technique. In a preferred embodiment the test object is first pressurized with a light absorbing fluid. The test object is then illuminated with a light source at a wavelength which is capable of being absorbed by the absorbing fluid. An image of the test object and any fluid in the vicinity of the test object is created by means of a video camera directed toward the test object and that image is electronically stored. A second image is then created in such a manner that any absorbing fluid in the vicinity of the test object does not appear in that second image. The second image is also electronically stored. The electronically stored information regarding the first and second images are then compared and analyzed for detecting, locating and measuring any leaking fluid from the test object.

대표청구항 ▼

A method for detecting, locating and measuring leaks from a test object, comprising the steps of: (a) pressurizing the test object with a light absorbing fluid; (b) illuminating the test object with a light source at a wavelength which is capable of being absorbed by said absorbing fluid; (c) creati

A method for detecting, locating and measuring leaks from a test object, comprising the steps of: (a) pressurizing the test object with a light absorbing fluid; (b) illuminating the test object with a light source at a wavelength which is capable of being absorbed by said absorbing fluid; (c) creating a first image of the test object and any fluid in the vicinity of the test object by means of a video camera directed toward said test object; (d) electronically storing said first image created by said camera; (e) illuminating said test object with a light source at a wavelength which is not capable of being absorbed by said absorbing fluid; (f) creating a second image of the test object and its vicinity by means of a video camera directed toward said test object; (g) electronically storing said second image; and (h) electronically comparing and analyzing the electronically stored information regarding said first and second images for detecting, locating and measuring any leaking fluid from said test object.