Generic question
Generic question
(OP)
Hello All,
I have this plastic cylinder that is 6" long and 1" dia with .1" wall. I have a stepper motor to move the plunger a controlled distance at 3 PSI. My problem is that when the plunger pushes the fluid a set distance (from start end) through a check valve, and if I move the plunger the same distance starting in the middle, I get less fluid out. What would be causing this difference in fluid output?
Tofflemire
I have this plastic cylinder that is 6" long and 1" dia with .1" wall. I have a stepper motor to move the plunger a controlled distance at 3 PSI. My problem is that when the plunger pushes the fluid a set distance (from start end) through a check valve, and if I move the plunger the same distance starting in the middle, I get less fluid out. What would be causing this difference in fluid output?
Tofflemire





RE: Generic question
Is the fluid or check containing dissolved air? Does the output pressure change with syringe stroke?
RE: Generic question
Yes it is acts like a syringe.
All the air is removed.
As far I know the output pressure should not change. I am moving the piston the same speed and distance, just from different starting locations.
Tofflemire
RE: Generic question
RE: Generic question
RE: Generic question
Thanks, I will look into that, it maybe the problem.
Tofflemire