Need Help Measuring water volume

12 Jul 2016

I am a relative newcomer to arduino, but I need to make a display in the house which will tell me how much water is stored in my water tanks (max 15,000 litres) 30 meters from the house, I think the best method would be to use differential pressure and transmit the reading by wi-fi to an LCD screen in the house. Has anyone done this before? Can anyone help?

Top Comments

Matt over 9 years ago +1

Hmm, could you mount an ultrasonic distance sensor under the lid of the container (assuming the water doesn't reach the top ).. then use that to measure how far away the water is?

oksbwn over 9 years ago in reply to oksbwn

This will provide you the exact volume of water present..
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oksbwn over 9 years ago

You can find the height of the water by any method stated above but to find out the volume you need to take care of the structure of the container.... and for that you need to calculate the volume of the structure by using Integration (Calculus..)
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tonyboubady over 9 years ago

Hydrostatic pressure is not my original Idea?...OUH NO!!! but still my idea is to use the sensor anywhere in the pipeline that connected to water tank...still worth it...
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dougw over 9 years ago in reply to hudoj

What accuracy do you need?
A Maxbotix ultrasonic sensor can handle this range.
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hudoj over 9 years ago in reply to clem57

I have a differential pressure sensor which measures the difference
in pressure between 2 inlet tubes. If I connect one side of the sensor to the
top of a pipe inside the tank which is open at the bottom and sealed at the top
and leave the other side of the sensor open to the atmosphere, when the water
level rises in the pipe the pressure will increase, and the open side of the
sensor will read the atmospheric pressure. This should eliminate the problem of
changing weather conditions.
My problem is programming the Arduino to calculate the scale
and transmit the results to the house.
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