AVR-Chat

I like the method used in most washing machines where they place a pressure
sensor above the liquid and run an open ended tube down to the bottom. That
keeps the sensor and electronics dry.

Given that water pressure = 1.363 PSI/m, a 15 m water head will produce
1.363 PSI/m x 15 m = 20.45 PSI. A 25 to 30 PSI full scale sensor should do
the trick.

Bruce


>> I think the best non-movement sensor would be a presure sensor at  
>> the bottom of the tank. No moving parts and it can be sealed. So it  
>> could measure many liquids.
>>
>> 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