What is the use of an electronic rain alarm?

Answer 1

• Suppose we have to fill a water tank on the roof top with the help of a motor,now to get an idea of the overflow we can use the rain alarm. The rain alarm apparatus is placed below the tank in such a way that water strikes the rain sensors as soon as the overflow occurs,now as we know that water is a good conductor of electricity,so the circuit gets completed by this overflowing water and the alarm rings,giving us an indication about the overflow.

Answer 2

There are many common moisture & water detectors readily available. They work like this: 2 conductors are placed close together but aren't touching. When water (which is electrically conductive, but not as conductive as most people think) contacts the conductors, the circuit is completed, and whatever is designed to happen next, happens. It could be an alarm, light, or a signal to an overall supervisory system such as in a factory basement, or tunnel.



Let’s understand this with the help of an example,
Suppose we have to fill a water tank on the roof top with the help of a motor, now to get an idea of the overflow we can use the rain alarm.
The rain alarm apparatus is placed below the tank in such a way that water strikes the rain sensors as soon as the overflow occurs, now as we know that water is a good conductor of electricity, so the circuit gets completed by this overflowing water and the alarm rings, giving us an indication about the overflow.
This is a practical application of rain alarm in day to day life.