HOME > Technical information > 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.
- Model
- Power Supply Frequency
- Volume
- L
- Initial Pressure
- kPa abs
- Final Pressure
- kPa abs
Evacuation Time
Warning: Use of undefined constant minute - assumed 'minute' (this will throw an Error in a future version of PHP) in /www/wwwroot/www.1000114.com/fetch/67b822e1dc74c20cf2237020f5928af9.php on line 373
minute minute
(
Warning: Use of undefined constant second - assumed 'second' (this will throw an Error in a future version of PHP) in /www/wwwroot/www.1000114.com/fetch/67b822e1dc74c20cf2237020f5928af9.php on line 374
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.