Leakage detection and locating device for tubes or cables

摘要

The measurement circuit works with a water sensor which consists of a moisture-sensitive insulated measurement lead and a non-insulated lead. The leads are connected to each other at the beginning and end of the tube or cable via resistors so that when a voltage is applied to the leads, a measurable current flows. The value of the current changes when moisture enters the measurement lead. A leakage point is determined from this current change. The measurement circuit can be adapted for use with 2 or 3-branch tubes.