Recent content by wacNTN

In retrospect, no particular point. I think you are saying there is a difference between the water level in the tank and the water level in the measuring tube because the air in the tube is being compressed. And the compression is being done by the water in the tank, but the air is only...

I understand what you are saying now.

I'm getting a bit confused so let's set the manometer aside for a moment and just look at the tank. The fluid in the tank is tap water and the tank top is open to atmosphere. Is the pressure at the bottom of the tank, caused by the water in it, equal to h inches of water? If so, how would we...

Hmm...I'm not sure what you mean by "change in pressure of the air due to the reduction in volume is not linear in depth" If you mean it won't work because the tank is conical, that should not be a factor. We've tested this with a cylinder as well and have the same issue. And here's a...

There aren't any calculations involved in this. Here's a sketch. An example of what I have described is that when h = 7", D is approximately 3 1/2" And the ratio between h and D seems to stay relatively constant at about 2.

Thanks for the fast reply. Sorry, but I left out that, ultimately, this will be connected to a pressure sensor and a microcontroller, which will control draining and filling the tank periodically as part of a more extensive process. I started with the pressure sensor connected generally as...

This is what I thought was a simple task, but it's causing me headaches. I have a conical steel tank with approximately 14 liters of fluid capacity. I need to determine the volume of water in the tank when in use, and we are currently planning to measure the pressure at the bottom of the tank...