Split Range Control means?

• A. A device used to measure rotation
• B. Output of a controller is split and sent to two or more control valves.
• C. Automatic and Manual
• D. Zero Suppression

Answer: (B)

Split range control means the controller’s output is divided and sent to two or more control valves, so each valve handles a portion of the signal and together they control the process variable over a wider range or with finer resolution in parts of the range. This approach is used when a single valve can’t meet the required control range or precision; one valve can manage small openings for precise low-range control while another handles larger openings at higher ranges, with the controller signal mapped to the valves to give a smooth, continuous response. For example, part of the controller output might drive a small valve for fine control at low flow, while the remainder drives a larger valve for higher flow, with some overlap to avoid gaps during the handover. The other options refer to measuring rotation, control modes, or signal conditioning, not how a single controller can drive multiple actuators.