c5cfac679b If Aluminum wires are not available try Steel or Tin.Copper is the worst. I used ordinary electrial wires as probes,but in the last I joined about 1/2 meter of Electric alluminium Service cable wire (available in Electrical shops), after redcing the number of alluminium wire strands from each wire (Red wire and blck wire) to make it thin and both the probes I put inside top protion of Over head tank (please see that there is no shorting between the two probes). by a rectifier. Immerse it into the water as per the description in the circuit. using piezo beeper alarm. I am thankful to CIRCUITS TODAY for giving the above circit.
When the Tank is full, no red light (T0 is off) and when tank is empty only red light is ON. Reply ↓ zubair February 16, 2011 at 5:48 am Hi, I have one more question that is, in this above circuit NPN transistor is used then please tell me which point is Base, emitter and collector.please reply me soon to complete this circuit. 2)Does the Length of wire from water level indicator to the the tranformer have any affect on the performance of transformer plz reply to my question thanks Reply ↓ Seetharaman April 25, 2012 at 9:37 am Hi Azad why 6 volt AC should be lethal and 6 volt DC is safe? I dont under stand. ac for the sensor and dc for operating a relay or a semiconductor alarm. Reply ↓ Sudheer November 6, 2013 at 5:31 am Hi! It is one of my favorite projects. student Reply ↓ Seetharaman July 2, 2013 at 10:12 am Hi Amith 6 volt AC is essential because to avoid electrolysis in the water due to salts contamination. Reply ↓ Francy Kakkassery July 9, 2009 at 4:57 pm Dear Sir, Thank you very much for your message regarding the water electrode probe. However i made a basic water level indicator that signals when water level is full. Thanks and regards.
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