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we want to use the xdk110 on a slide to meassure the volume in a 10 m high wine tank.
Other topics of our test we can do with the XDK sensors. But with the XDK sensors we do not get exactly the high (on an milimeter) of the water in the tank.
Does somebody knows an external sensor which we can connect to the XDK or has somebody an idea to get the exact high with the sensors on the XDK?
Hello Juergen, I guess there is no approach with the XDK sensors itself to measure the height with such an accuracy. You have severals common approaches to measure the water level with additional sensors. One would be an pneumatic water level sensor that is build of a tube in the tank and a pressure sensor on the top of the tube. You can connect the pressure sensor over the extension board ADC pins with the XDK. Otherwise you could measure the water level with a ultrasonic sensor in the top of the tank, connected via the ADC pins as well. I’m quite not sure if you can achieve an accuracy of one millimetre, but I think the pneumatic approach will provide a much better accuracy than the ultrasonic approach. I hope the comments above could help. Kind regards, Manuel
thanks for your response. The point is that we can only set the XDK on a sliderplate which is moving up and down. Changes on the tank or the equipment arround isn't possible.
Hello Reinhard, I am glad to help. Thank you for clarifying. I misunderstood your first post that your use case is limited to a montage of the XDK on a slider plate. I assume you measured the water level using the onboard acceleration sensors of the XDK. If this is the case I suppose there are some additional issues to deal with. If the slide with the XDK is placed within the wine tank there is an upcoming issue with corrosion because the XDK is not designed to be an closed measuring unit. Therefore it is open up to environmental influences like humidity and water itself. Additionally a placement in the wine tank also leads to an issue with the battery life. Depending on the calcualtions, the enabled sensors and connection methods the battery wont last very long. I assume measuring with additional external sensors does not increase the accuracy up to one millimetre of the current water level. The construction of the slider itself involves some serious discrepancies. Do you know how accurate your slider plate is? Furthermore did you measure the accuracy of the water level with the XDK sensors itself? Kind regards, Manuel