AT the pneumatic actuator

AT the pneumatic actuator
the AT pneumatic actuator is a kind of common pneumatic actuator, it is double piston rack and pinion rotating structure design, usually can be divided into two kinds of forms, double-acting and single acting, single acting refers to with the function of spring return.
the AT pneumatic actuators actuators and regulating mechanism is a unified whole, the actuator can be divided into two categories, diaphragm and piston. The piston stroke is longer, suitable for the occasion of a greater thrust requirements, the actuator can not only directly drive the stem, but also can be used with turbine worm. Diaphragm stroke is short, can direct drive valve stem. 。
AT the pneumatic actuators have a positive action and reaction in two forms, positive role is in the form of pressure signal, putting down. Reaction is the pressure signal putting up. The output of the actuator displacement and the input air pressure signal proportional relationship, signal pressure, the greater the displacement of push rod. When pressure reaction with spring balance, the push rod stability AT a particular location, pneumatic actuators and Angle AT stroke pneumatic actuators and two kinds of straight travel actuators. With the continuous development of intelligent pneumatic actuator, the intelligent valve positioner as its indispensable accessory products. Smart valve positioner built-in high integration of micro controller, USES electric balance ( Digital balance) Principle instead of traditional force balance principle, the electric control command into pneumatic position increment to achieve valve position control; Use of digital, stop, close signal to drive the pneumatic actuators movement; Valve position feedback signal directly through the high accuracy position sensor, electric/gas conversion function.