| 摘要 |
A rotary valve position indicator is disclosed. An example apparatus includes an actuator housing (214) defining an explosion-proof enclosure boundary. An actuator output shaft (208) has a first shaft portion and a second shaft portion. The first shaft portion is partially disposed within the explosion-proof enclosure boundary, and the second shaft portion is disposed outside of the explosion-proof enclosure boundary. A visual position indicator is disposed on the second shaft portion of the actuator output shaft (208) and indicates the rotational position of the actuator output shaft relative to the actuator housing. |
