Water Level Indicator Circuit Diagram - this simple transistor based water level indicator circuit is very useful to indicate the water levels in a tank whenever tank gets filled we get alerts on particular levels here we have created 4 levels low medium high and full we can create alarms for more levels we have added 3 leds to indicate initial three levels a b c and one buzzer to indicate full level d when tanks gets filled pletely this is a simple water level indicator circuit or water level sensor circuit the circuit is very easy to build and contains only three pnp transistors and some other ponents water level indicator description this is the circuit diagram of a simple corrosion free water level indicator for home and industries in fact the level of any conductive non corrosive liquids can be measured using this circuit the circuit is based on 5 transistor switches each transistor is switched on to drive the corresponding.

led when its base is supplied with current through the water through the the water level of the tank is indicated by using the 5 led s and if the water level in the tanker is full then the water pump is turned off pletely the following diagram shows the water level indicator circuit diagram consist of 4 probes which are placed in the overhead tank and interfaced with the p div class b factrow b twofr div class b vlist2col ul li div author tarun agarwal div li ul ul ul div div div li water level indicator project circuit features easy installation low maintenance pact elegant design the automatic water level controller ensures no overflows or dry running of pump there by saves electricity and water avoid seepage of roofs and walls due to 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 this is one of the simplest water level indicator that can give three indications full half and low water levels in the overhead tank through led indications water level alarm using micro controllers like 8051 and avr are shown in previous articles this article shows simple circuits of water level indicator with alarm three circuits were shown here are simple and built using transistors 555 timer and uln2003 ic when the water touches the metal contact in which base of each transistor is connected a small current flows and turns on the transistor when a transistor turns on led connected to it glows thus leds will be turned on depending up on the level of water by using a relay we can also control the level of water



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