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Calculate total flow rate in M3

Created by: Sabu80 at: 4/12/2019 11:40 AM (7 Replies)

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4/12/2019 11:40 AM	Rate (0)
Sabu80 Member Joined: 9/18/2017 Last visit: 4/22/2021 Posts: 7 Rating: (0)	I need some help to calculate the total flow rate in M3(1000 Litre) I have a 4-20mA flow sensor: 4mA = 0 M3 20mA - 80 M3 Basically i want to count the total flow rate run through the flow sensor. Because the flow rate is always different i can't figure out how to calculate the total flow produced. What if the total flow rate is at a maximum of 32767 M3? How to prevent this (posible) futere problem? The logo can only count to 32767 if i am right. Thanks for the support

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4/12/2019 12:00 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/18/2024 Posts: 34239 Rating: (4263)	To calculate a total flow rate with a current flow value, the LOGO! not really possible. Better would be a pulse count, where the pulse corresponds to a certain amount. With the current flow value you can only make approximation values. Attached is a suggestion. Maybe that's what you want. Attachment Total flow_0BA8.Standard.zip (366 Downloads)

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4/12/2019 1:02 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/18/2024 Posts: 34239 Rating: (4263)	Sabu80 I need some help to calculate the total flow rate in M3(1000 Litre) I have a 4-20mA flow sensor: 4mA = 0 M3 20mA - 80 M3 What's the time rate bei this flow Seconds ? Minutes? Hours?

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4/12/2019 1:35 PM	Rate (0)
Sabu80 Member Joined: 9/18/2017 Last visit: 4/22/2021 Posts: 7 Rating: (0)	Thank you very much, that's exactly what i want. There is als a digital pulse for taking samples after ..m3. I just have use the 4-20mA signal because i have set a low and high flow rate alarm.

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4/12/2019 1:38 PM	Rate (0)
Sabu80 Member Joined: 9/18/2017 Last visit: 4/22/2021 Posts: 7 Rating: (0)	ixo65 Sabu80 I need some help to calculate the total flow rate in M3(1000 Litre) I have a 4-20mA flow sensor: 4mA = 0 M3 20mA - 80 M3 What's the time rate bei this flow Seconds ? Minutes? Hours? This is for pump station with two alternating pumps so i think max. a few minutes

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4/12/2019 1:44 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/18/2024 Posts: 34239 Rating: (4263)	I think we're talking at cross purposes. The sensor has an area. 0 - 80 m3/? What is it exactly? 0 - 80 m3/h? Or 0 - 80 m3/min? Or 0 -80 m3/s?

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4/12/2019 1:49 PM	Rate (0)
Sabu80 Member Joined: 9/18/2017 Last visit: 4/22/2021 Posts: 7 Rating: (0)	Oww i'm sorry, its m3/h

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4/12/2019 1:56 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/18/2024 Posts: 34239 Rating: (4263)	Here is a corrected version. The first version is based on m3/s. At 80 m3/h, however, the value must be divided by 3.6 to get to liters/second, since the addition takes place every second. Attachment Total flow_0BA8.Standard_V2.zip (345 Downloads)

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