I'd like to get a portable instrument that I can attach to valves so I can feedback signal on valve position. A 4-20 ma signal would work, but something that I wouldn't have to string a couple hundred yards of cable back to the DCS would be even better. Any ideas of who sells one?

Mark
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If you want a simple on-off we can do that using a sensor - magnet.

Depending on the size of the "arc" we have a device that can have a resistive, VDC or 4-20 out.

Can you mail more info. An email link is at:
"http://www.almegcontrols.com/":http://www.almegcontrols.com/

We can most likely modify the resistive device below to work.

"http://www.almegcontrols.com/continuous.htm":http://www.almegcontrols.com/continuous.htm

Thanks Bob Hogg