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Rain operated alarm hand made on GPB ( General Purpose Board)

"Rain operated alarm hand made on GPB ( General Purpose Board)" Usefull for all Engineers semester 1,2 and 3.
Rain operated alarm hand made on GPB ( General Purpose Board)
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Anil Patel


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  • Rain alarm circuit is very useful if there is rain, the function of a series of rain this alarm is to remind us in case of rain. In the circuit diagram is controlled by the IC 555, which functions for the NE555 provides 1 KHz tone through the speaker if the sensor exposed to rain. Water sensor images can be seen in the picture, place the sensor at upper level of the tank. Global Water’s Rain Alarm Sensor (WA600) is water solid state sensors for detecting the presence of conductive solutions, such as water spills, water tank levels, and rain ponds. Water alarm sensor has two stainless steel electrodes in the position at the desired point for the detection of liquid. When liquid is detected, a relay close to the surface water and the alarm signal can be used to sound an alarm or closing a switch inside a piece of remote monitoring equipment. Relay outputs fully isolated and can handle 2 amps of current. The following is a schematic drawing:   

               After the alarm sensor rain in dry conditions, the detection sensor will automatically reset without the need for additional services. Alarm surface rough and require minimal maintenance. The Rain Alarm has many uses, including: surface water monitoring, detection precision, control water level, an indication of high water, and sea submarine low-level indication. Water alarm sensors can be purchased to trigger an alarm on contact with water or air.

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