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[DPRG] Water pressure sensors recomendations?

Subject: [DPRG] Water pressure sensors recomendations?
From: Greg Needel greg at robogreg.com
Date: Tue Apr 10 15:57:16 CDT 2012

I can confirm that ultrasonic sensors can read liquid....well atleast


On Tue, Apr 10, 2012 at 3:47 PM, JOHN DRUMMOND <jdrumm9015 at aol.com> wrote:

> The sonar method is what the lake level sensors I have seen use.  You can
> "hear" the click of the ultra sonic sonar when you get near them.  The are
> in a nice waterproof container and aim down at the water.  As John Swindle
> pointed out you won't need a piece of foam, the water surface is reflective
> enough to ultra sonic sonar.  I bet you have some range finders in your
> robot junk box.
> John Drummond
>  -----Original Message-----
> From: Doug Emes <dougemes at gmail.com>
> To: -Old Dog- <puppy_dog500 at yahoo.com>; dprglist <dprglist at dprg.org>
> Sent: Mon, Apr 9, 2012 4:30 pm
> Subject: Re: [DPRG] Water pressure sensors recomendations?
>  I would try floating a piece of foam on top the water level, and firing
> a sonar down to it.
> On Apr 9, 2012 2:22 PM, "-Old Dog-" <puppy_dog500 at yahoo.com> wrote:
>>   Hello All:
>> While this isn't about robotics, it does fall under automation and
>> sensors.
>> I've installed a rain barrel in my back yard, and am trying to devise a
>> solid way to measure how much water is in it. I'd like to do so by placing
>> a pressure sensor at the barrel's bottom, then calculating depth based on
>> pressure. Can anyone recommend a water pressure sensor, that can (1) be
>> submerged, (2) run low level DC voltage and (3) provide a reading between
>> the ranges of 1 and 1.1 ATM?
>> Thanks guys.
>> -Martin
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