PE Control Systems follows the NCEES specification effective April 2027: 85 questions across just 5 knowledge areas, one of the most concentrated PE exams. Control Systems is the largest at 17–26 questions, followed by Measurement at 16–24 and Final Control Elements at 14–21, so those three carry most of the exam. Safety Instrumented Systems is smaller but shares the highest difficulty rating with Control Systems.
70–106, across 5 topics
Effective April 2027
8 or 8.5 hours testing; 9 or 9.5 hours for the appointment
Ranked by question count weighted against the spec's own difficulty rating — not question count alone, since a smaller topic rated harder can be worth more study time than a bigger, easier one.
Engineering drawings, diagrams, symbology, and terminology · Control theory including process dynamics and response for analog, discrete, and sequential control methods for common processes and components · Human factors including displays, alarm management, and equipment layout · Logic implementation, configuration/programming, logic exception handling, and diagnosis of unexpected behavior, including interpretation of logic types
Sensor technologies applicable to general measurement including principles, specification, selection, and cost considerations · Sensor technologies applicable to general analytical instruments and sampling systems including principles, specification, selection, and cost considerations · Sensor technologies applicable to fire and gas detectors including principles, specification, selection, and cost considerations · Sensor technologies applicable to machinery monitoring and protection including principles, specification, selection, and cost considerations
Valve type and material selection based on application and process characteristics · Valve trim selection · Valve calculations · Valve actuator type application and selection including failure modes
Every topic in the official NCEES spec, with its question range and share of the exam. Study Scheduler allocates your study hours in this same proportion automatically.
Control Systems is the largest at up to 26 questions, followed by Measurement at up to 24 and Final Control Elements at up to 21 — together most of the exam.
5, one of the most concentrated PE exams. The April 2027 specification keeps the same five areas, renames Safety Systems to Safety Instrumented Systems and adjusts the question ranges, so depth on the top three topics matters more than broad coverage.
For how many hours to budget, week-by-week study plans, and how Study Scheduler weights your plan — see the full PE study guide.
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