RECALIBRATING A ACROMATIC VRC POSITIONER

In this episode of Acrodyne TV we show you how to adjust the zero and span to re-calibrate a VRC positioner.
Acrodyne’s ACROMATIC range of valve positioners include the standard 20-100 kPa analogue pneumatic valve positioners and 4-20 mA analogue electro pneumatic valve positioners for both linear and rotary style control valves. To further enhance the range they have added the fail freeze electro pneumatic smart positioner which will hold its last position in the event of air supply failure or loss of signal. A wide range of accessories are also available including air filter regulators, volume boosters and lock-up valves.
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[@JasonKillilea-e6j]

Valuable content. Thank you. Bad audio quality. If you redo this mic the technician with a lapel mic, drop the music, and try to plug the air hiss (this may be part of normal operation).

[@tawfiqwadghiri8383]

i think 15 psi (open position ) should be green (C C W)