Calculate the evacuation time of Rotary Vacuum Pump.
Select each item and enter the figures in the volume.
- Power Supply Frequency
- Initial Pressure
- kPa abs
- Final Pressure
- kPa abs
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second second )
To find a time to evacuate air from sealed space (tank) from initial pressure to the final pressure (target vacuum degree), use the following formula for calculation.
|t : Evacuation (pumping) time(min)
V : Volume(L)
S : Pumping speed(L/min)
P1 : Initial Pressure(kPa abs)
P2 : Final Pressure(kPa abs)
When carrying out the above calculation, since pumping speed: S of the rotary vacuum pump changes by pressure ranges, first calculate each evacuation time of divided pressure range: t1, t2, t3, and so on, then calculate the sum: t0. Refer to this link for details.