Vacuum control by changing motor speed?
Vacuum control by changing motor speed?
(OP)
I posted this in motor and controls forum, then realized this forum is probaly more appropriate. I have a vacuum tank that I currently control vacuum with a proportional valve (with mechnical linkages). I am looking to improve my control. I was wondering if I could control the vacuum by changing the speed of the vacuum pump motor?





RE: Vacuum control by changing motor speed?
If you are looking to make major step changes this could be used. Just like any pump, the volume head relationship is partly dependent on pump speed. but this wil not give fine level of control, also it would probably impact your volume, which would impact the rate of attaining the vaccum pressure more than the absolute pressure, in fact (depending on the actual vauum pump) lower your total vacuum. This can be determined form the performance curve of the pump.
RE: Vacuum control by changing motor speed?
Most laboratory pumps are sliding vane and have to run in a narrow speed range.
What degree of control are you trying to achieve?
RE: Vacuum control by changing motor speed?
RE: Vacuum control by changing motor speed?
RE: Vacuum control by changing motor speed?
you could adjust your vacuum by using a pressure control valve instead of the 2"-ball-valve.
ET
www.vacuum-guide.com
RE: Vacuum control by changing motor speed?
RE: Vacuum control by changing motor speed?
ET
www.vacuum-guide.com
RE: Vacuum control by changing motor speed?