The Baker Hughes Masoneilan 8012/8013 Series cam positioners are force-balance electro-pneumatic devices that achieve remarkable dynamic response and positioning precision by directly comparing the valve position with a controlled DC output signal. A single multi-lobe cam allows for field-adjustable linear or percentage-control characteristics without the need for additional components.
This positioner is offered in two action types: direct action, where an increase in the electrical signal leads to an increase in output pressure, and reverse action, where an increase in the electrical signal results in a decrease in output pressure. Furthermore, the positioner facilitates precise split-ranging of the controller output signal, enabling the sequential operation of two control valves using a single controller.