This circuit is very dependent on the conductivity of the water you use and the distance between the electrodes. If it is distilled or pretty darn free of dissolved ions, the circuit will not work. For example. If your voltage source (batteries) supply 6 volts, you will need the water gap to have a resistance of 100 ohms or less.Hi All,
I come across this water sensor alarm circuit.
If I were to use 4 x 1.5V battery cell, any idea how long it would last ?
Thanks in advance.
Your water will be very conductive. And, @blocco a spirale 's is much better. Remember to add a switch to blacco's circuit if an overflow condition will lasT any period of time (but find a way to remind yourself to turn it back on at some point). Avoiding a switch is preferred if overflow is a short duration and the alarm is not too annoying.Hi Everyone,
Thank you very much for your replies.
It's for my alkaline water system's acidic water tank.
I plan to put the electrodes as close as possible but not to touch each other.
The sole purpose of this sensor is to prevent overflow.
Maybe I should use the circuit by blocco since it draws zero current on standby.
by Aaron Carman
by Jake Hertz