Scottish Water Selects Sonicsens Remote Monitor
Scottish Water is using the Halma Water Management (HWM) Sonicsens ultrasonic level sensor to monitor flow rates in a variety of situations. These include siphon chambers, combined sewer overflows (CSOs), overflow and storm tanks, weirs, reservoirs and compensation channels. Sonicsens is a non-contact, highly accurate level sensor and flowmeter. Ultrasonic level sensors are based on a simple principle: an inaudible high-frequency sound wave is emitted and directed towards the surface to be measured. This surface reflects the wave back and the time taken for the reflected wave to return is in direct proportion to the intervening distance. With a known total distance between the sensor and the bottom of the vessel or channel, subtraction reveals the depth of the water. Flow rates can then be calculated easily if the volumetric dimensions of the channel are known, faster flow raising the fluid level accordingly. Ultrasonic measurement is non-contact and therefore non-contaminating and ...