Training Resistive Sensors

Resistive Sensors

Sensors & Instrumentation
Intermediate 120 minutes 5 lessons
Platinum RTDs, thermistors, strain gauges, potentiometers and photoresistors — the classical resistive transducers, treated in the analytical style of Webster and Pallàs-Areny.

Learning Objectives

  • Apply the Callendar–Van Dusen equation to platinum RTDs
  • Use the β-parameter and Steinhart–Hart models for NTC thermistors
  • Compute resistance change and stress from strain via the gauge factor
  • Derive and apply the loading-error formula for a potentiometer
  • Model a photoresistor with the log-log power law

Lessons

1
RTDs and the Callendar–Van Dusen Equation
24 min
2
Thermistors — β-Model and Steinhart–Hart
24 min
3
Strain Gauges and the Gauge Factor
24 min
4
Potentiometers and Photoresistors
24 min
5
Practice Test — Resistive Sensors
24 min

Quick Practice

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Key Concept Flashcards

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