how to calculate total fluid

[rajapalani]

hi i am using flow meter to monitor the flow rate its output of 0-10v if (1 volt = 1lpm & 10volt=40lpm) i want  to calculate the total fluid go's throug the pipe

[JÞB]

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@rajapalani wrote:

hi i am using flow meter to monitor the flow rate its output of 0-10v if (1 volt = 1lpm & 10volt=40lpm) i want  to calculate the total fluid go's throug the pipe

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What is the model of the flow meter.  We will need to check the specs of the device to get the scaling (0-1V = 1lpm the next 9 Volts get you 39?  Some missing data here )  the rest is just simple calculus to integrate over time.

[rajapalani]

sorry what i try to say the sensor give (0-10v 0lpm -40lpm)  

[JÞB]

That makes more sense. Just multiply the voltage by 2/3 to scale it as Liters per Second and do the integration over time to get Liters. You do know your sample rate in seconds right?

[rajapalani]

could you please make vi to find the total fluid

[rajapalani]

find the attchement for what i done to fine the total fluid 

[Steffen01]

-it should be divided by 60 not multiplied by 2/3 to get L/s

-cannot open the file, its LV2024, may want to save for earlier version

-the whole thing sounds like a homework question, just saying

[Steffen01]

adding to that, flow meters have totalisers. You can read the value from there. Need some sort of a protocol then (HART, modbus, what not)

Or, set it for pulse output, count pulses. Say 1 plulse per L. Same like bean counters.

[LVNinja]

The volume will be calculated by integrating the Flow meter waveform over time. The area bellow the FLOW waveform is the volume. 

[Steffen01]

could run a loop every 1000ms sharp. Turn the value into absolute (but 0-10V should be 0-40L anyway). Then add into a shift register, homework done. Time to watch some doomer music.