Very accurate detection of leaks in closed loop industrial fluid circulation plant such as coolant loops etc., by direct comparison of the analogue output from identical sensors on the supply and return legs of the system

摘要

Procedure in which the flows in both the supply and return pipes of a circulation system are measured. The values derived from the measurement sensors are directly compared and any difference processed further by a measurement analysis system. The sensors can be ultrasonic, calorimetric, inductive, differential pressure, etc. A threshold value can be defined above which an alarm is triggered.