Process Measurement Fundamentals
How the plant senses itself: pressure, level, flow and temperature measurement principles, transmitters and the 4-20 mA convention, ranging and calibration, measurement quality, and the installation details that quietly decide whether a reading can be trusted.
53m
Total time
4
Competency levels
12
Lessons
What you'll learn
- Explain the measurement chain from primary element through transmitter to the control system
- Describe qualitatively how pressure, level, flow and temperature are measured, and distinguish gauge, absolute and differential pressure
- Select a plausible flow and level technology for a given service and justify the choice
- Interpret the 4-20 mA convention, live zero and the relationship between range, zero and span
- Distinguish accuracy, precision and repeatability, and say why each matters to a decision
- Recognise installation effects — impulse lines, straight runs, thermowells — and the diagnostics smart transmitters add
Curriculum
Progress through each competency level in order.
1
Awareness
- 3mThe Big Four Measurements and the Measurement ChainKnowledge
- 3mTransmitters and the 4-20 mA ConventionKnowledge
- 7mAwareness Check: Measurement Basics and the SignalAssessment
2
Knowledge
- 3mPressure and Level MeasurementKnowledge
- 3mFlow and Temperature MeasurementKnowledge
- 8mKnowledge Check: Measuring the Big FourAssessment
3
Skill
- 3mRange, Zero and Span, Calibration and Measurement QualityKnowledge
- 3mAssignment: Document and Sanity-Check One Measurement LoopAssignment
- 7mSkill Check: Ranging, Calibration and Trusting a ReadingAssessment
4
Mastery
- 3mInstallation Effects and Smart TransmittersKnowledge
- 3mAssignment: Investigate a Suspect Measurement End to EndAssignment
- 7mMastery Assessment: Judging Whether a Measurement Can Be TrustedAssessment
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