The Smart Positioner Series 8400S is a Smart two-wire device that uses a 4-20mA signal input as its set point, deriving its power from the same. It compares the set point with the actual position of the Actuator stem and eliminates the positioning error accurately using an internal PID control action. The Smart Positioner has variants designed for use in both – safe and hazardous environments respectively. It is a microprocessor based positioner that provides fast, sensitive and accurate positioning for single acting linear pneumatic actuators. It optionally offers HART communication and a 4-20mA output signal as position feedback. The Smart Positioner 8400SH series uses a unique contactless magnetic position sensing technique in combination with a pair of Hall sensors. This mechanism is free from backlash and friction and helps achieve a fast and accurate position. The position sensing is contactless and achieved by a combination of a shaft-mounted magnet and Hall-effect sensors mounted within the control unit. Heart of the Smart Positioner is a small piezo based transducer, which is a low power and low air consumption device. The electrical signal from the micro-controller is converted to precise equivalent pneumatic signals through the transducer, which operates the pilot valve, which in turn supplies the proportional air to the valve actuator
VALVE GEARBOX , VALVE GEAR STORE , VALVE GEAR CAR , CONTROL VALVE POSITIONER , CONTROL VALVE EXCAVATOR , VALVE LIFTER , VALVE INDEX , VALVE SPECTRA , VALVE STOCK , VALVE JAKARTA , VALVE BEKASI , VALVE JAKARTA , VALVE BANDUNG , VALVE BALI VALVE MAKASSAR , VALVE INDONESIA , CONTROL VALVE MURAH, CONTROL VALVE STOCK .