[Lab] water sensor

Paul & Andrea Mumby themumbys at gmail.com
Mon Aug 25 15:51:42 EDT 2014

Well there are several ways to detect water that I'm aware of:
- Conductive (as you mention, this requires enough electrolytes in the
water to conduct a signal)
- Mechanical (using a float, and a lever for example)
- Chemical (using something that will react in the presence of water)
- Optical (light attenuation of certain IR spectrum and so on)
- Ultrasonic (ultrasonics will bounce off the surface of the water, so most
ultrasonic rangefinders will detect water level in a contactless way)

So from that I'm sure you can figure out a means to read the water level to
set off an alarm depending on your specific needs and setup :)

On Mon, Aug 25, 2014 at 3:24 PM, Darcy Whyte <darcy at inventorartist.com>

> Anybody have a suggestion for a water sensor? I want to have an alarm if
> my radiator on my laser let's any water go...
> Do I actually need a sensor or can I just use some conductors near each
> other assuming the impure water conducts enough?
> --
> Darcy Whyte
> Art+ inventorArtist.com <http://inventorartist.com/> | Aviation
> rubber-power.com
> Contact: darcy at inventorArtist.com | 613-563-3634 by appointment (no text)
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