6/17/2019 4:43 PM | |
Joined: 12/18/2014 Last visit: 10/19/2024 Posts: 33999 Rating: (4228)
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You need to draw in the layout of the tank where it is empty and where full (with the mA values). |
6/17/2019 5:59 PM | |
Joined: 11/21/2016 Last visit: 8/14/2023 Posts: 9 Rating: (0) |
I hope this will help u better. I see they fill him to the top so it will be 2700 liters.I putted the values in the new attachment quickly
AttachmentMilk Reclaim Tank press transmitter info.pdf (321 Downloads) |
6/17/2019 6:24 PM | |
Joined: 12/18/2014 Last visit: 10/19/2024 Posts: 33999 Rating: (4228)
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Look at attachment. The red part of the tank can not be calculated linearly due to the slopes.
AttachmentMilk Reclaim Tank press transmitter info_2.pdf (309 Downloads) |
6/17/2019 7:01 PM | |
Joined: 11/21/2016 Last visit: 8/14/2023 Posts: 9 Rating: (0) |
Attached is the new one. Its 115 liters and 4.48 MA
AttachmentMilk Reclaim Tank press transmitter info.pdf (312 Downloads) |
6/17/2019 8:17 PM | |
Joined: 12/18/2014 Last visit: 10/19/2024 Posts: 33999 Rating: (4228)
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Here a possible solution. Between 4.00 and 4.48 mA is calculated simply linear 0 -115 liters. AttachmentTank_capacity_0BA8.Standard_V2.zip (296 Downloads) |
6/17/2019 8:24 PM | |
Joined: 2/22/2008 Last visit: 8/6/2024 Posts: 2698 Rating: (208) |
You can try it with your sensor, if you want, see attached file with comments. You need a sensor with 20mA output, if the tank is full plus a little reserve. You can see it on your own layout, that the maximum in your case is 6,8mA instead of e.g. 19-20mA. The analog input can handle a value from 0..1000, you only use 224-340 for 115..2700 l. The lower area has also the worst accuracy. Regards, Scorp P.S. Program corrected, because 4..20mA => Logo 200..1000, not 0..1000 AttachmentTank1.zip (320 Downloads) |
Last edited by: Scorp at: 06/17/2019 22:02:13 |
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6/19/2019 7:03 PM | |
Joined: 2/22/2008 Last visit: 8/6/2024 Posts: 2698 Rating: (208) |
If you can decide to use a better sensor there is an example for calculating the exact volume for your case. In bottom area you have a cone, then following a cylinder. For this you can calculate the volume with the Logo. See attached file for details. Regards, Scorp
AttachmentTank2.zip (354 Downloads) |
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