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- Valve Positioners | Basic Principles of Control Valves and Actuators . . .
Positioners essentially act as control systems within themselves: the valve’s stem position is the process variable (PV), the command signal to the positioner is the setpoint (SP), and the positioner’s signal to the valve actuator is the manipulated variable (MV) or output
- Positioners | Emerson US
Meet specific parameters with accurate, robust, and reliable Fisher positioners What is a Valve Positioner? As a common control valve accessory, the valve positioner delivers pressurized air to the valve actuator so that the position of the valve stem or shaft corresponds to the set point from the control system
- Industrial Positioners Products - Flowserve
Flowserve's Positioners product portfolio is one of the most comprehensive in the flow control industry Explore a wide range of Positioners today
- Control Valve Positioner | Basics of Pneumatic Valve Positioners
A positioner is a motion-control device designed to actively compare stem position against the control signal, adjusting pressure to the actuator diaphragm or piston until the correct stem position is reached:
- Positioners | Measurement Products | ABB
Digital positioner TZIDC Efficient quick closing of valves with a ‘non-linear’ characteristic curve
- Positioners - Siemens Global
Siemens positioners – first choice for precise, safe, reliable and intelligent valve controlling Perfectly equipped with SIPART PS2 and SIPART PS100
- How Pneumatic, Analog (Electro-Pneumatic), and Digital Control . . . - Kimray
An Electro-Pneumatic Positioner, sometimes abbreviated "EP Positioner," receives an electric signal (typically 4-20mA or 0-10 VDC) from a controller It then sends a corresponding pneumatic signal to a pneumatic valve actuator
- Valve Positioners: Function Types - Process Instrumentation
Pneumatically operated valves depend on a positioner to take an input signal from the process controller and convert it to valve travel In other words, a positioner is a motion control device made to actively compare the stem position against the control signal, adjusting the pressure to the actuator diaphragm or piston until the correct stem
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