If you use a Darlington configuration as input with a pulldown resistor to prevent false triggering, you can even lower the current drawn and prevent even more corrosion. There is also a circuit which use a 555 to generate "AC" which eliminate corrosion of the electrodes even more. Grtz
@@BjornV78 Yes with a Darlington the current can be lowered. With a pull down resistor the current would increase again but maybe it's possible to find a sweet spot. Generating an AC does not completely remove the risk of having ions that convert back to neutral status thus having atoms that attach to the electrodes, just mitigate a bit. In addition it must be a true AC: you need electrons that go back and forth, that significantly increase the complexity of the circuit. However your's are valid arguments, thanks for contributing the discussion.
@@AccidentalScience another trick you can use, but not have seen, is to use "polling" like a smoke detector use. This is done by reading a value (water level) not constantly, but every X seconds or minutes. Another non contact solution can be is to use a IR sender/receiver in a clear tube , where the water diverse the IR light beam, the technique that a computer mouse or smoke detector use. Grtz
@BjornV78 love the IR thing. And as a bonus you may also read CO2 concentration 🙂 (I'm joking). Yeah polling is a good way to practically eliminate the problem. In the case one uses a PLC or an Arduino, one output can be used to drive the power of the sensor programming a proper duty cycle. Thank you mate. Greetings from the Alps.
Hi, i like your videos (sometime not). Maybe next time you will be tried capacitive water level sensor. That's better in a few ways. Sorry for my English ;)
Great video!
@@jerryhatfield1404 thank you, I'm glad you like it.
@@AccidentalScience I like the video. Just not Mr. Spaghetti. Hope it didn't come off wrong. LOL
If you use a Darlington configuration as input with a pulldown resistor to prevent false triggering, you can even lower the current drawn and prevent even more corrosion.
There is also a circuit which use a 555 to generate "AC" which eliminate corrosion of the electrodes even more. Grtz
@@BjornV78 Yes with a Darlington the current can be lowered. With a pull down resistor the current would increase again but maybe it's possible to find a sweet spot. Generating an AC does not completely remove the risk of having ions that convert back to neutral status thus having atoms that attach to the electrodes, just mitigate a bit. In addition it must be a true AC: you need electrons that go back and forth, that significantly increase the complexity of the circuit.
However your's are valid arguments, thanks for contributing the discussion.
@@AccidentalScience another trick you can use, but not have seen, is to use "polling" like a smoke detector use. This is done by reading a value (water level) not constantly, but every X seconds or minutes. Another non contact solution can be is to use a IR sender/receiver in a clear tube , where the water diverse the IR light beam, the technique that a computer mouse or smoke detector use. Grtz
@BjornV78 love the IR thing. And as a bonus you may also read CO2 concentration 🙂 (I'm joking).
Yeah polling is a good way to practically eliminate the problem. In the case one uses a PLC or an Arduino, one output can be used to drive the power of the sensor programming a proper duty cycle.
Thank you mate.
Greetings from the Alps.
Hi, i like your videos (sometime not). Maybe next time you will be tried capacitive water level sensor. That's better in a few ways. Sorry for my English ;)
he already tried that
@@WhatCID look at the description, you'll find the link to the video I made some years ago that showcases a capacitive sensor.