Engineering Sciences

Optical liquid switch is useful for detection of either absence or presence of water (clear or turbid) or monitor water level. The change in state from presence to absence of water or vice-a-versa triggers relay contact changeover-suitable for control application and also for remote audio/visual indication. The LED illuminated cap provides information on the absence of water locally; OFF presence, ON absence. Applications : 1. Over-flow detection in tanks/reservoirs/pans/dams , 2. Low-level or high-level monitoring with warning/control in tanks, salt farms , 3. Empty pipe/blockage detection in water/drainage pipelines , 4. Water level warning on vehicles , 5. Alarm in events of water flow over bridge/road or under-pass for traffic management and safety , 6. Water-level monitoring and alarm in open canal/stream/open drainage for vicinal population safety , 7. Warning of high tides in coastal areas , 8. Telecom outdoor stations, electrical substation, tunnels, basements for rainwater ingress alarm. 9. Domestic appliances based on water application