History of the Valve Positioner
History of the Valve Positioner
(OP)
I posted this last year, and got no responses. So I'm gonna' try again.
2 Feb 05 13:08
I am interested in finding out who offered the first valve positioner. The oldest literature I have seen shows the Moore 72. Positioners probably "evolved" more than just appearing in a flash of inspiration, and I'm really curious about the time-line.
2 Feb 05 13:08
I am interested in finding out who offered the first valve positioner. The oldest literature I have seen shows the Moore 72. Positioners probably "evolved" more than just appearing in a flash of inspiration, and I'm really curious about the time-line.





RE: History of the Valve Positioner
yours
RE: History of the Valve Positioner
But when did the device come along that compared the control signal to the stem position? I'd really like a link to be able to access detailed info about the first posiotioner(s).