I am looking for a programmable linear actuator which can travel 18in in vertical direction.If some one can suggest me with apprapriate model it wil be a very helpful for me.Thank you

Question

We want to put the actuator in a vessel with diameter of 9''and fix it to the flat bottom vertically.
Also the actuator should be in the center axis of the vessel. The active end of the actuator will be
connected to our sample holder which we can design according to the actuator.
Now we want to control it to realize reciprocating motion.
For example:
1) go up to15'' and hold 30 min;
2) go down to 5'' and hold 15min;
3) repeat 1) and 2) 50 times.
Vessel Pressure: 150psi; Temperature: 50-70℃（estimate）
Attachments:
Actuator application.pdf ‏64 KB

Answer 1

Hey Li,
Check this site Stage Advisor, for a list of motors that will travel at least 15'' and that are compatible with our Motion Controllers.
You can always just go to the Advisors for Motion to change the specs you want to look for. 
Hope this helps!
National Instruments
Applications Engineer