Need a method to help determining amount of water presence in any solid substance. The aim is to find an exact amount of water in a coconut so as to find the amount of useful material.
You can use some systems based on acostic signals. For example put transmitter(s) in a side of coconut and the reciver(s) just in front of the transmitter in the other side. By measuring the recieved signal behavior, you can get data lead you to find your answer.
Good luck
Perhaps you can look at
"How does a capacitive moisture measurement work?"
https://www.acoweb.de/en/how-does-a-capacitive-moisture-sensor-work/amp
As Nikolay suggested capacitance is a good general method. We have used metal plates with vegetables placed between the plates and sent about 100KHz voltage into the plates. We have used a capacitance meter to measure the resulting capacitance. It works well. The system is geometry and density sensitive. If your size varies a lot it will change the values. You would need to then calibrate for object size. Similarly density affects measurement. Again you can generate a correction for density. That means you need capacitance measurement, object size and density. There may also be a ripeness factor which could change the chemistry and provide a difference from a green to a ripe product. A brunch of measurements but not difficult.
I wonder if you might be able to get a reasonable indicator by weighing it and then immersing it in water to determine volume. Then calculate density. That would work if the moisture in the cells was reasonably uniform and then density would vary more based on free liquid in the centre.
Dear Umang Bhatt ,
You can use things sometimes too complicated and sometimes too easy. i have some observations about you questions what happens we just shake a can that full of water?!. there will be some kind of motion due water present in it. so you can use this method. I don't know how the moisture things work without cracking the shell.
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