Electronic Water Sensor

[brahmabull525]

I am looking for an "electronic water sensor" (for lack of a better description). Basically, if it's submerged in water I want it to provide a signal, if it isn't then no signal. The depth is minimal, so using a pressure differential (probably) wouldn't work.

Anyone who knows of such a device, please let me know!

Thanks!

 

[IRstuff]

What about a moisture sensor?

TTFN

 

[NickE]

Two conductive traces? (Only if the water you're interested in has some Ionic content.)

Ultrasound
Laser

 

[ARenko]

What's the specific application? Can't use a level switch?

 

[Ralph2]

2 wires in series with a battery and light or alarm. When the wires "short" out in the water the alarm comes on. You can even use house hold current (120 v)but there is "some" risk of getting electric shocks.

 

[amorrison]

http://www.electronic-circuits-diagrams.com/alarmsimages/alarmsckt4.shtml

http://www.electrokits.com/electronic-kits/measurement-test-equipment/207.htm

http://www.electronicsforu.com/efylinux/circuit/cir105.htm

http://members.tripod.com/xexorz/schematics/moisture.html

Glad to help out a fellow mechanical -when it comes to electronics most of us need all the help we can get!

 

[MachinaMan]

What about the windsheild washer sensor in my car ?

It sends a signal when the level of fluid in the tank gets lower then the position of the sensor. I imagine one could reverse it to send a signal when fluid is above the specified level.

Funny thing is, it doesn't work very well lately ...

R

 

[DesignerMike]

Gems sensors have all types of this type of thing (and they do online orders)

http://www.gemssensors.com/TOCProducts.asp?nContentsID=4

optical, ultrasonic, float...choose your flavor and price.

http://www.gemssensors.com

good luck

 

[Cockroach]

No, I used these before. They are common in water wells that have a dynamic head downhole.

You can find them in common literature put out by various electronic manufacturers. The one I had was made by RC Industries and had a beeper when the water level rose thus making contact with the sensor. If you go to Cardinal Electronics, etc, you can buy them off the self or at least get the parts to build your own. It's not tough!

Have you tried surfing the web, Google or something?

Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada

 

[dbaird]

check out:

http://www.wateralert.com/

David Baird
mrbaird@hotmail.com

Sr Controls Engineer

EET degree.

Journeyman Electrician.

 

[Bluenoser337]

Check

http://www.carlogavazzisales.com/level.htm

and pick a level control that will give you a digital (on/off) signal whenever liquid gets between the two probes that you make of whatever you choose (copper pipe, stainless rod, etc). Units use very low voltages so no danger at all if installed correctly. Good luck!