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Liquid Level Sensor

eli
Guru 13485 points
Other Parts Discussed in Thread: FDC1004

need to measure the amount of a gel placed in a flexible nylon bag (amorphous shape), but tilting the product should kip same results.

Can it be done with FDC1004?any other solution?

  • 0
    TI__Expert 7400 points
    Hi Eli:

    Tilting the liquid will always cause a problem for liquid level sensing especially for capacitive since the sensors will be located on one side of the container. The only way that I see in compensating for this is to have some kind of accelerometer to measure the tilt to determine how much of a liquid change it would cause. This case is for liquids like water. Since the target is gel, you would need to test out how well that liquid is measured using a liquid level sensing setup. It will be dependent on the viscosity of it. If it's like a hair gel, then I would assume that tilting would may not be as much of an issue since it holds extremely well, but then that poses a problem because measuring the change in capacitance will be not as reliable due to it sticking on the sides of the container.

    Thanks
    -David Wang
    Capacitive Sensing Applications
  • 0 in reply to David Wang11
    Guru 13485 points

    Hi David

    Thsnks.do you think conductive is a good solution?

  • 0 in reply to eli
    TI__Expert 7400 points

    If you are talking about capacitive sensing, I cannot say because I do not know much about the target liquid you are using, but from what I can tell, it does not sound feasible. That is something you need to prototype to verify. As mentioned before, the viscosity of the gel may pose a problem.

    Thanks
    -David Wang
    Capacitive Sensing Application