Fluves Sewer - Inspect the Integrity of Sewers - Brochure

Based on distributed temperature sensing (DTS), we can monitor the hydraulic performance of every meter of a sewer, including undesired water ingress and blockages. A DTS system measures ambient temperature along a fiber optic cable. When firing laser pulses in a fiber optic cable, a small fraction of the transmitted light is reflected, and the intensity and frequency of the reflected light are dependent on the cable temperature. With such a laser, the temperature can be measured continuously every meter for up to 50 kilometers with a high level of accuracy (0.1°C) along the fiber in the sewer. Measurements can be performed every meter along the cable on a designated basis (minute, hourly, daily, monthly).