Overhead Water Tank Level Indicator Circuit

Automatic water level controller circuit.

Overhead water tank level indicator circuit.

Here is a simple automatic water level controller for overhead tanks that switches on off the pump motor when water in the tank goes below above the minimum maximum level. The water level alarm circuit is a simple mechanism to detect and indicate the level of water in the overhead tank and also in the other containers. The water level indicator employs a simple mechanism to detect and indicate the water level in an overhead tank or any other water container. The darlingtons are reasonably rated to handle current up to 500 ma and voltages up to 50 v.

It switches on the pump when the water level in the overhead tank goes low and switches it off as soon as the water level reaches a pre determined level. The water level is sensed by two floats to operate the switches for controlling the pump motor. It has numerous transistors acting as a switch and the switch gets activated when the sensors tell them to. Here s a simple water level indicator for overhead tanks that uses three leds led1 led2 and led3 to indicate minimum middle and maximum water levels in the tank.

The simple water level indicator circuit presented here makes this system automatic i e. The above circuit shows a simple water level indicator system based on tranistors and led s. Wastage of water is really an issue in places where they use overhead tanks. Uln2003 is a 7 step darlington transistor array network inside a single ic chip.

Monitoring of water level is really a difficult task in those places and it could also lead to wastage of water and power. The heart of the circuit is the transistors bc 547 there are total7 transistors in the circuit and each one will be sensing the level of water present in the overhead water tank there is one extra power led without a transistor and that is because this red led will be telling us two things. Nowadays all the householders owners are storing the water in overhead tanks by using the pumps. Each sensors float is suspended.

It also prevents dry run of the pump in case the level in the underground tank goes below the. The sensor probes comprise a b c and d where a is the common probe and b c and d are meant for sensing the minimum middle and maximum levels respectively. The uln2003 can be effectively used for making a full fledged automatic 7 stage water level controller with indicator as shown below.