5/30/2014 8:41 AM  
Posts: 51 Rating: (4) 
Hiee.... How to calculate volume of a tank in liter???? Tank level is given what another quantity required for that calculation??? Do u have any Logical blocks for that/?? Send backup if u have 
5/30/2014 9:22 AM  
Joined: 8/27/2010 Last visit: 10/21/2020 Posts: 416 Rating: (36) 
Usually there are few ways of calculating the volume. 1 way: Biggest part of the tanks I ever saw had strapping tables. And most of levelmeasurement radars have this option preinstalled in configuration software. Strapping table looks like: 1cm 1200kg 1400litres 2cm 2430kg 2850litres and so on. Because every tank is not geometrically straight, strapping table allows you to calculate the volume accordingly. Moreover, actual volume and weight depends also on temperature, and you should note it. 2 way: Linear formula. If you know, that 1mm of cylindrical tank is 30kg and 35 liters, you can can calculate all volumes accordingly. Just multiply you level in mm to this kilogramms and liters. Just ask for strapping tables on the plant. Feel free to ask additional questions. I'm sure you'll have) //please note, that custody transfer have much more accuracy needed, and volume and normalised volume is different things. 
Last edited by: olloy at: 5/30/2014 9:27 AMYep, there is a third way. If you do not know anything about volume, but have cylindrical tank tank geometry, you can use this formula for cylindrical tank installed vertically: Volume of Cylinder = π r2 · h For any other geometry there will be another formulas. It is just example. 

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5/30/2014 9:29 AM  
Posts: 51 Rating: (4) 
thanks but do u have any functional block for that calculation Like Volume= Height * Pi * (Dia)^2?? this any block which calulate volume by this property??? 
5/30/2014 9:46 AM  
Joined: 8/27/2010 Last visit: 10/21/2020 Posts: 416 Rating: (36) 
Unfortunately I havent functional block for that formula, but it is very simple to write such one, using one of your preferred languages. In STL there will be something like (just for example): L #Diameter SQR L 3.14 *R L #Height *R T #Volume 
Last edited by: olloy at: 5/30/2014 9:56 AMFor continuios level calculation with this formula, change you height to level in REAL format. //i''''m not checked if the formula is correct, use the one that suitable for you. 

5/30/2014 10:03 AM  
Joined: 11/26/2011 Last visit: 2/3/2021 Posts: 508 Rating: (20) 
Its a simple formula V = π r 2 h h  denominates level and r is the radius of tank. Unit in Inches But it depends upon the medium also. Every Gas has its own density. Based on that volume will vary . if you divide the value by 231 then you will get volume in gallons. This applied for cyclindrical tank. Same applied for rectangular tank also . Formula differs Length * Width * Height. 
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5/30/2014 10:09 AM  
Joined: 5/28/2008 Last visit: 6/21/2021 Posts: 4229 Rating: (794)

Hello, You should you do it for your tank. You who know the tank drawing. And this function is different for horizontal tanks and vertical tanks. It will depends on the dish profile of tank as well. Normally, for tanks with upper and lower dishes, you make tables as mentioned before. And these tables will depend on the dish profile of your tank which you can get if you have the tank drawing and make some calculations. As much you increase these steps, as more precsion you will recieve. If you need a very accurite reading, you have to get equations and make some integrations. Details will be found attached.. Upper dish is the same but your product shouldn't fill the tank to the end and shouldn't enter the dead zone of your level instrument. Hope this helps.
AttachmentTank_Volume.PDF (334 Downloads) 
Last edited by: Ayman Elotaify at: 5/30/2014 10:10 AMAyman Elotaify 

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5/30/2014 10:56 AM  
Joined: 8/27/2010 Last visit: 10/21/2020 Posts: 416 Rating: (36) 
Madhava, you are wrong. He is specified the required formula. Moreover, formula will depend on the tank shape. In my answer I specified, that given example are valid for the formula provided by topicstarter. 
Last edited by: olloy at: 5/30/2014 10:58 AMMoreover, formula doesnt depend on units. You specified inches/gallons. Topicstarter want liters, that means he is using metrical system. 

5/30/2014 12:11 PM  
Posts: 51 Rating: (4) 
thanks for reply i will get all details tank shape,fluid,Diameter n get back soon 
5/30/2014 12:17 PM  
Joined: 11/26/2011 Last visit: 2/3/2021 Posts: 508 Rating: (20) 
If you know the value then you can use the table. Your method is correct. If you dont know the value then you can use the basic formulas to calculate the value. What I specified is just an example, units you can use accordingly to you requirement. (As I am dividing by 231 thats for calculating gallons). Moreover for example, If its an oxygen tank you can easily calculate the volume the gas density we know thats easy to calculate If its gas volume will not be exact as density differs due to mix of gases. 
5/30/2014 12:25 PM  
Joined: 8/27/2010 Last visit: 10/21/2020 Posts: 416 Rating: (36) 
Use a .pdf mentioned byAyman Elotaify. There you can find all requred information to find the formula. All I can suggest is to search calibration tables or any official information about the tank. Usually tank or vessel in real life slightly differs from the drawings. That means each tank got certification after all measurements was made. And it is always better to have this measures instead of preliminary drawings) Good luck! 
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