Low cost efficient water level detector switch

Replies

• 

  shreyasm89

  Nice idea. I think you should check out the working of level detectors in residential buildings. There you will get your answers.
• 

  Maitham

  you have not to use this ICs this circuit is too easy. You can use two wires as an open cct. Then when the water reaches a desired level, the water will short the two wires. This will give the signal which you can use to switch the motor pump off. okay guy??
• 

  d_vipul

  hey maitham,
  
  sorry to say but your method also need to use IC 555.........
  
  just create a Bistable Multi Vibrator using IC 555.........
  and use maitham's method for Triggering...........
  
  so simple
  
  so you both guys are saying the same................
  
  for further details feel free to ask...........
  
  Regards,
  VIPUL
• 

  Maitham

  NO DEAR VIPUL
  
  There is no need to use the 555 IC, I meant you can use the signal from contacting the two wire to energize a relay by a transistor. This relay will switch the motor power cct off. Thats all
  
  Regards,
  Maitham
• 

  JCgal

  hi,
  
  Hope my idea can help, since your motor has an magnetic starter all you need is 3 rods and a floating relay. one rod is common the center one and the long one should go to lowest level you want then the short one for the max height of water. by connecting the rods in the relay properly you can attain perfect on/off of your pump automatically.
  
  thank you.
• 

  Wuebbs007

  Limit Switch in series with the motor? water rises to desired the Limit switch turns off motor using a water float to activated limit switch. this way u will not have a shock hazard and you wont be pulling a crap load of amps bc the waters not being a conductor.
• 

  khaled hamza

  you can use a contactor for switching the motor on or off , and get a level switch ( limit switch ) in series with the motor power and control circuit .
  then when the level is reached high , it energize the level switch to give signal to the contactor to switch off the motor , and vice versa.
  
  I posted an article about this control scheme at this blog

  Electricity , Power generation ,Thermal power plant , Solar Energy , Generators , Green Energy