drbitboy
Lifetime Supporting Member
...a big valve that had a 12 inch stroke....
Hooah! I haven't seen one of those up close in a few decades.
...a big valve that had a 12 inch stroke....
...if this is a new system...
And this is the first time they attempt to tune a PID? Oh dear.
yes! We have a thermal chamber for heat stressing boards. The control is made by Watlow. We need to test boards from 0 to 70 degrees C do the controller must heat or cool.There are temp controllers that handle Heat/Cool PIDs rather well.
mark.t, l will re-ask Peters question, do you have feed back on your valves, in other words how do you know if the valves have gone to the desired settings?