Testing a peristaltic pump
Testing a peristaltic pump
(OP)
Hi all!
I have set up a simple flow line to test our peristaltic pump. It turns out to be that the flow rate is so small. I think it is even smaller than the one given by the manufacturer.
The pump was made by verder. Instead of using water, I am using glycerin-water mixture.
My flow line is: reservoir-tube(25.4mm inner dia.)-adapter-pump-adapter-tube(25.4 mm ID)-flow meter-reservoir
The adapter is self made by our workshop. The reason is that up to four heads can be installed on the pump.
Is it because I am choosing too big diameter for the tube? My adapter is also quite large.
It turns out that I can only use 3 out of 4 heads. If I use 4 heads then the motor's power won't be sufficient.
I have no idea why this is happening?
Any suggestions would be much appreciated.
Thanks!
I have set up a simple flow line to test our peristaltic pump. It turns out to be that the flow rate is so small. I think it is even smaller than the one given by the manufacturer.
The pump was made by verder. Instead of using water, I am using glycerin-water mixture.
My flow line is: reservoir-tube(25.4mm inner dia.)-adapter-pump-adapter-tube(25.4 mm ID)-flow meter-reservoir
The adapter is self made by our workshop. The reason is that up to four heads can be installed on the pump.
Is it because I am choosing too big diameter for the tube? My adapter is also quite large.
It turns out that I can only use 3 out of 4 heads. If I use 4 heads then the motor's power won't be sufficient.
I have no idea why this is happening?
Any suggestions would be much appreciated.
Thanks!





RE: Testing a peristaltic pump
Once you get that fixed, you might want to test the pump against a restriction representing the installed system head. If you make the restriction variable, you will find that the pump's capacity curve is not a straight vertical line on the Q-h diagram, and that it may not even be a straight slanted line.
Mike Halloran
Pembroke Pines, FL, USA
RE: Testing a peristaltic pump
How do I check the distance between the roller and the shoe? Have you ever used verder's pump? The shoe cannot be adjusted. For each head, I used 45-50 cm long tube. The tube inner diameter is 15.9 mm and the wall thickness is 3.2 mm, and that is in accordance with the manual.
Thanks
RE: Testing a peristaltic pump
2. No, I haven't used verder's pumps. I've bought a few of other brands, and had a hand in designing and/or fixing custom versions in half a dozen products. I know lots of ways to make a peristaltic pump that isn't quite as good as I think it should be.
It's beginning to smell like you're not using Verder's official tube. That may be your problem.
Mike Halloran
Pembroke Pines, FL, USA
RE: Testing a peristaltic pump
And can anybody tell me what "four heads" on a peristaltic pump mean?
RE: Testing a peristaltic pump
Do you think tube selection plays a big role here? What I use is Noprene A-60-F. I do have verderprene. I did call verder's representative but their response is quite slow.
What is telescope gage?
To mica,
Hmm.. four heads mean it has four channel. Four tube can be used simultaneously.
RE: Testing a peristaltic pump
RE: Testing a peristaltic pump
(check by trying to blow through it)
RE: Testing a peristaltic pump
The type of the pump is S30 L-series.
To CH50H: I will do your suggestion.
RE: Testing a peristaltic pump
I changed our noprene tube with verderprene (same inner diameter and wall thickness).
I thought it is going to work but it is not. I have attached a short movie about the error.