Available in quarter-turn, rotary and linear versions, robust Rotork CMA actuators perform numerous process control valve, metering pump and damper applications. Single-phase or DC electrical power is all that is required for simplified installation and control valve actuation in safe or hazardous areas. Explosionproof certification to international standards is available.
A new model size has also been introduced to the rotary CMA design, creating a range that is suitable for virtually all process control applications. Upgrades to internal electronics and HMI enhancements complete the list of improvements across the range. For additional functionality, all rotary CMA actuators have output speeds that are adjustable down to 50% of full speed, in 10% increments.
The maintenance-free CMA drive train, permanently lubricated and environmentally protected to IP67, can be mounted in any orientation. Accepting an industry-standard 4-20mA control signal, the CMA provides accurate and repeatable positional control. Resolution is 0.2% on linear and quarter-turn applications and 2 degrees on the multi-turn models.
Manual operation is available as standard whilst optional extras include local pushbuttons and selector switch, digital position indicator and network compatibility with Rotork Pakscan, HART®, Profibus®, Modbus® and Foundation Fieldbus®.