Pneumatic and electric actuators in the use of the difference of function

According to the work of energy actuators can be divided into electric, pneumatic and hydraulic, commonly used is electric and pneumatic actuators. From the use function, the electric and pneumatic actuators have the following difference:
1. Load performance: pneumatic actuator load value is 1 tons, to see whether the power electric actuators.
2。 Positioning accuracy: positioning precision of the pneumatic actuator is about + / - 1毫米( Intermediate stop) ,+ / - 0. 1 ( At both ends) 。 Electric actuators are generally in the + / - 0. 02 mm above.
3。 Response time: pneumatic actuator response time is fast in the electric and hydraulic transmission.
4。 Speed performance: the general pneumatic actuators is seen below 50 mm/s, more than 500 mm/s piston fever easily. Electric actuator servo performance of low speed and high speed are all well.
5。 Using the environment: actuator has simple structure, export thrust large, smooth and reliable action, and intrinsically safe explosion-proof, the requirement of environment is lower than the electric. So the pneumatic diaphragm control valve is widely used in chemical industry, oil refining production.



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