★ Must-know
📌 A transducer is considered a sensor when it converts a measurable quantity such as acoustic pressure, optical intensity, or magnetic field into an electrical signal, but it is considered an actuator when it converts an electrical signal into sound or mechanical motion.
Further detail
A sensor converts a physical quantity into an electrical signal, whereas an actuator converts electricity into another form of energy.
1. What does a sensor typically produce when it detects a non-electrical physical phenomenon?
2. A device detects acoustic pressure and outputs a voltage, but another device receives a voltage and produces mechanical motion. How should these devices be classified?
3. What best defines a measurement chain?
What does a sensor convert into an electrical quantity?
A non-electrical physical phenomenon.
When is a transducer considered a sensor?
When it converts measurable quantities into electrical signals.
What is a measurement chain?
A set of devices or operations used to detect a physical quantity.
What is the role of an analog-to-digital converter in a measurement chain?
It converts the sensor's analog signal for digital signal processing.
Sensor role
Converts physical phenomena into electrical signals.
Transducer function
Converts one energy type into another.
It covers the core concepts of Sensors and Measurement Chains, organized by topic with the key definitions, explanations and takeaways, so it's easier to learn and remember.
Read the full study guide →The practice quiz has 10 multiple-choice questions, each with an explanation. Use it to check what you know and find your gaps.
Take the quiz (10 questions) →There are 11 flashcards on Sensors and Measurement Chains, with a question on the front and the answer on the back. Try to recall each answer before you flip, and let spaced repetition bring back the ones you miss.
See all 11 flashcards →Upload a PDF or paste your notes. Revizly writes a study guide, a practice quiz and flashcards in about a minute.