Calculator of Evacuation Time of Rotary Vacuum Pump
Calculate the evacuation time of Rotary Vacuum Pump.
Select each item and enter the figures in the volume.
{{ $data.minute }} minute
( {{ $data.second }} second )
The calculated Result is a reference value only.
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.