peristaltic pump head curve

[jabonet]

Anybody knows how the head in a peristaltic pump changes as viscosity or succion head changes.

I need to pump to very diferent viscosities liquids at the same volume ratio, no matter what succion head each one has.

My doubts is that for big sucction heads, the vicous flow may colapse the tubing and therefore change the ratio of the mix.

Thanks

 

[25362]

Visit

http://news.thomasnet.com/fullstory/7625

and you may get some ideas.