6/17/2019 9:51 AM | |
Joined: 12/18/2014 Last visit: 9/24/2024 Posts: 33833 Rating: (4205)
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Do you use an additional expansion modul AM2 or an analog input on the basic modul? |
6/17/2019 9:53 AM | |
Joined: 11/21/2016 Last visit: 8/14/2023 Posts: 9 Rating: (0) |
Yes i am using the AM2 |
6/17/2019 10:09 AM | |
Joined: 12/18/2014 Last visit: 9/24/2024 Posts: 33833 Rating: (4205)
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In the appendix a possible solution. Since at 4-20 mA and a display range of 0 - 2000 l, the gain of the signal requires a gain with 3 decimal places, I use 2 analog amplifiers connected in series. Since I do not know if and how many analog inputs are enabled on the base module, I have assigned the analog input the address 1 (AI1). Attachmenttank_capacity_0BA8.Standard.zip (331 Downloads) |
6/17/2019 10:35 AM | |
Joined: 11/21/2016 Last visit: 8/14/2023 Posts: 9 Rating: (0) |
Thanks a lot. I will have it tested later today |
This contribution was helpful to1 thankful Users |
6/17/2019 3:01 PM | |
Joined: 11/21/2016 Last visit: 8/14/2023 Posts: 9 Rating: (0) |
Sorry my pressure transmitter is 0 to 1 bar.What do the scaling need to be then? |
6/17/2019 3:03 PM | |
Joined: 12/18/2014 Last visit: 9/24/2024 Posts: 33833 Rating: (4205)
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The same. You want to display the tank capacity, not the pressure. |
6/17/2019 4:04 PM | |
Joined: 11/21/2016 Last visit: 8/14/2023 Posts: 9 Rating: (0) |
Here is the tanks layout on the attachment. I hope it will help
Attachment07284_00-Layout1.pdf (369 Downloads) |
6/17/2019 4:43 PM | |
Joined: 12/18/2014 Last visit: 9/24/2024 Posts: 33833 Rating: (4205)
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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 (293 Downloads) |
6/17/2019 6:24 PM | |
Joined: 12/18/2014 Last visit: 9/24/2024 Posts: 33833 Rating: (4205)
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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 (286 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 (287 Downloads) |
6/17/2019 8:17 PM | |
Joined: 12/18/2014 Last visit: 9/24/2024 Posts: 33833 Rating: (4205)
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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 (275 Downloads) |
6/17/2019 8:24 PM | |
Joined: 2/22/2008 Last visit: 8/6/2024 Posts: 2698 Rating: (207) |
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 (304 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: (207) |
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 (332 Downloads) |
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