Rotork announced its new CMA series of all-electric modulating actuators suitably sized for linear, quarter-turn and rotary operation of pump, damper and control-valve applications, requiring precise position control and continuous modulation. CMA actuators are powered by single-phase or direct current supplies, eliminating the need for air hoses and compressors used with similar pneumatic control-valve actuators. Features include a permanently-lubricated and maintenance-free drive train; a 4-20 mA loop-powered feedback signal; and digital communication options including HART®, Foundation FieldbusTM, Profibus®, Modbus®, Rotork's PakscanTM, and RIRO for discrete hardwired control.
Rotork Controls Inc.
www.rotork.com
