| 摘要 |
A differentiating air-operated positioner of automatic systems comprises a body with pressure pneumatic circuit, booster with valves, actuator with rod, lever, sliding flange, receiving below, second bellow. Inner bellow is mounted to the receiving below. The inner below cavity is connected to atmosphere and cavity of receiving bellow is connected directly to the pressure pneumatic circuit, and the cavity of second bellow is connected to the pressure pneumatic circuit through throttle. |
