Fisher model 3582 D-ring control valve positioner (manual demonstration)

[ttarzan911]

Seems so simple, until your teacher unbalances the beam, and messes with the zero and span :@ 

[osorio901]

Para min este posionador é o melho que ja Vi p/ se trabalhar mecanicamente adorei um abraço.

[MICK1333]

Thanks from the Nite Crew Las Flores Canyon Exxonmobil was showing a new hire

[bladder1010]

Agreed. This is a very clear and succinct explanation.

These are great videos to knock loose the cobwebs for working instrument mechanics. Thank you so much for continuing to post them.

[BuilderRoss]

Really good explination on the principles of operation. Your videos are great teaching tools, Thanks again.

[BTCInstrumentation]

@BuilderRoss You are very welcome. It's really hard to find any kind of explanatory tutorial -- video or otherwise -- for free on the internet. I decided about a year ago to start posting short videos to YouTube for my students, and so far the response from people all over the world has been really positive.