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Similarly when water level reaches to point B, circuit with YELLOW LED and transistor Qgets completed and Yellow LED glows, same goes with point C. What is a water level indicator? And finally when tank gets full (Point D),. Water Level Indicator Circuit – Liquid Level Sensor with Alarm Overflow of water is definitely a major problem nowadays. Overflow water tanks eventually lead to loss of water and natural resources as well.
Obviously the sensor, that is made by corossion, on the boar must not be mounted directly on iron or steel bathtubs but with a magnet atached on the case. The circuit is fully based primarily on transistors. The sensing section is somewhat similar to this circuit but there is additional circuitry for switching the pump ON when the water level falls below a set level and the pump will be switched OFF when the tank is full. This happens when rising or dropping water levels come in contact with the respective water sensors arranged step wise inside the water tank at different depths.
When the water levels with the sensor element in output goes high making the respective LED ‘ON’. The water level indicator circuit is build around a hex inverter buffer CMOS IC. This article shows simple circuits of water level indicator with alarm. The simple water level indicator circuit presented here makes this system automatic, i. By using the water level indicator we can overcome the overflow of water from the tankers. The principle of this circuit is very easy to understand and it is very practical.
You have to supply volts to this circuit possible from two AA battery and connect the -ve terminal to lowest level of tank by a wire, you can tie this to the metal pipe outlet of tank. Therefore this circuit is quite handy to use. This circuit of water level alarm is based on the astable multivibrator which is wired around IC(NE555). The operating frequency of this astable multivibrator depends upon the values of capacitor C resistors Rand Rand the resistance across probes at A and B. This instructable has been made because of the reason that sometimes the water tank is empty and that time the light goes off , then there is a big problem of use of water.
We can control overflow of water tanks by using the tank level indicator. Water level indicator is a system which gets the information about the water level in tanks which is used in homes and public places. Water Tank Level Indicator Circuit Diagram. Its purpose was to remotely monitor the water - level in a metal tank located in the attic by means of a very simple control unit placed in the kitchen, some floors below. Three NPN transistors , two low power relay , LEDs and some resistors and diodes are used to make this circuit.
The diagram below shows the working of a water level indicator. Probe A is connected to the positive rail of the circuit , therefor lifting the voltage in the water of the tank. Probe B, C and D is placed at different levels of the tank.
Here’s a SIMPLE WATER LEVEL INDICATOR CIRCUIT. It is best suited for overhead water tanks to display the amount of water. It is possible to increase the count of indicator LED’s and make it more convenient.
There are Four parts in this project:- (i) The Sensor Part: It is generally a fixed support inside the tank having some nuts and bolt with wires coming out.
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