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Subject: Re: HELP NEEDED TO DESIGN A WATER LEVEL INDICATOR
X-Newsreader: Forte Agent 1.92/32.572
Date: Fri, 22 Nov 2002 22:08:24 -0500
NNTP-Posting-Date: Fri, 22 Nov 2002 22:08:24 EST
Organization: Bell Sympatico
What about using a device that measures the distance of the water from
the top the same way photo cameras measure the distance to focus ?
There are also devices on the market ( measuring tapes) that measure
the distance of an object by using the reflected sound.
The name for the device is Sonar and it was developed by polaroid.
"The 6500 Series is an economical sonar ranging module that can drive
all Polaroid electrostatic transducers with no additional interface.
This module, with a simple interface, is able to measure distances
from 6 inches to 35 feet. The typical absolute accuracy is (+-) 1% of
the reading over the entire range."
On Sat, 23 Nov 2002 00:25:42 +0000 (UTC),
>Michael Painter wrote:
>> "RJW" wrote in message news:email@example.com...
>>> Can you put a stick into the tank that will have the indicators on it?
>>> "Regi P.Abraham" wrote in message
>> That may not be practical. we need something on our water tanker and would
>> have to climb up on top to use it. Dangerous and time consuming.
>> Cheap is a plastic pipe that sooner or later we'll add to solve the problem.
>> But that will cause a (minor) problem. If you can see the water level then
>> pretty soon you will not see the water level. That green stuff will grow
>I wonder about a tube that the algae can't see through.
>If they can't use red light, then a red tube (with a blue ball inside)
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