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Petrolift contrcl system公司引入一种用于杆式泵抽油机的新型原动机——动态调速驱动装置(ASD)。该装置(?)NemaB型电动机、磁性扭矩传感器和有关的控制器构成一个整体,具有下述特点:
Petrolift contrcl system introduces a new type of prime mover - Dynamic Speed Control Drive (ASD) for rod pump pumping units. The device (?) NemaB motor, magnetic torque sensor and the controller form a whole, has the following characteristics: