Hazardous-location-certified rotary electric actuators
Harold Beck & Son's Group-11 rotary control drive is certified for Class 1, Division 1 hazard-ous environments.
Harold Beck & Sons Inc. has released its Group-11 rotary-control drive (G11; electric actuator) rated for hazardous environments. Its G11 is certified for Class 1, Division 1 locations, presenting an ignition or explosion risk.
G11's maintenance-free design allows for precise control, with low current draw and no duty-cycle limitations. The on-board control module directly feeds the drive's motor windings, eliminating external motor starters and controls. The drive does not coast or overshoot, and will not overheat—even under continuous modulation. The control module includes variable-speed operation, communications capabilities, and diagnostics.
G11 drives are used for automatic modulation of dampers, quarter-turn valves, and other final control elements that require fine, responsive control.
For more information visit: www.beckdrives.com .
—Richard Phelps, senior editor, Control Engineering,