AVR-Chat

This might work for small depth changes, such as trying to hold a water
level constant. But, I would not bet anything on having it work over a 15
meter range.

Jim Wagner
Oregon Research Electronics

> How about this?
> A water tight ball with a magnet in it.  A magnetic field sensor at the
> top of the tank.  The higher the fluid level, the more mag field sensed.
> Use a permeable tube to hold the floating ball so that it stays
> more-or-less in one area.  A magnetic sensor sensitive enough for this to
> work might be pricey though.  This is a kind of fancy way to do the force
> sensor you suggested with no moving parts but a floating ball. :)
>
> DLC
>
>> I think I may have an idea. a pressure sensor at the top of the tank and
>> a
>> rod extending down into the tank with a plastic ball fixed at the end.
>> the
>> higher the water level the more force on the sensor.
>>
>> Brian
>>
>> --- In AVR-Chat@yahoogroups.com, Muhammad Amiruddin
>> <amiruddin.muhammad@...> wrote:
>>>
>>> Dear all,
>>>  
>>> please help me,
>>>  
>>> i want make project for measuring the level of water on the tank that
>>> approximately 15 m high. what senssor that i should use ?
>>>  
>>> Is there any ultrasonic senssor wich can measure range until 15 m ?
>>>  
>>> rgds,
>>>  
>>> 4mir
>>>  
>>>
>>>
>>>
>>>
>>> [Non-text portions of this message have been removed]
>>>
>>
>>
>>
>>
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>
>
> --
> Dennis Clark
> TTT Enterprises
>
>