I was wandering if there is any such sensor, that would read pressure, temperature or moisture ( approximately 12 inch long strip)? I want to be able to dip this sensor into water and have it be able to give me a reading of how much of the sensor is under water out of the total length of the sensor? So essentially I need a sensor that can take many readings along it's length telling me at each whether it is above water or below water by using any of the above methods.
If possible I would like for it to be able to adjust on the fly as well. I don't want to have to dry it off every time a depth changes.
Is this possible? Do you know of any place I could buy something like this?
Edit:
Thanks for the input guys. I found this : http://www.milonetech.com/Purchase_eTape.html
Do you think that will work with the accuracy I need? I think it would be easier to buy something like this than build it, but I may be wrong. Please tell me what you think. Thanks.
Best Answer
I would suggest trying a capacitive sensor. They can be constructed many ways. Google for "capacitive water level" and you'll get a bunch of hits that are relevant. Not sure if you'll be able to build one that is sensitive enough for your needs, but it's a place to start.