Data Acquisition Fundamentals

Temperature Measurements


Making Accurate Temperature Measurements with Thermocouples, Thermistors and RTD Sensors

Download this white paper and learn to take accurate measurements with these three popular temperature sensor types.

As one of the most common physical phenomena engineers and scientists monitor, temperature measurements are vitally important to ensure proper functioning of a vast array of applications. While modern systems have simplified this process for users, understanding the theories, operation, and inherent pitfalls of temperature measurements can help improve the accuracy and reliability of your data.

This white paper explains the pros and cons of the most widely-used temperature transducers: thermocouples, resistance temperature detectors (RTDs), and thermistors. You will learn each sensor's unique considerations based on the application needs.

Learn more about:

  • Thermocouple Temperature Measurement
    • Sensor basics and background
    • Cold-junction compensation
    • Measurement pitfalls and additional concerns
  • RTD Temperature Measurement
    • Sensor basics and materials
    • 2-wire, 3-wire, and 4-wire configurations
    • Sources of error and practical precautions
  • Thermistor Temperature Measurement
    • Sensor basics and materials
    • Linearization, time constant, and other factors
    • Wheatstone bridge configuration