What is a Temperature Process Sensor?

What is a Temperature Process Sensor?

A temperature sensor electrically monitors the temperature of liquids, solids, and gases. Temperature-detecting devices may be touch or non-contact, and they use the converting of heat into electronic voltages to provide a precise temperature reading.

The reading will be shown on a screen or utilized to initiate a series of actions, such as activating a fan to cool an overheating engine.

Different temperature sensors use different technologies to measure how hot (or) cold an environment.

Choosing the correct temperature sensor is determined by what is being monitored, how extreme the temperatures are, and the accuracy and size requirements.

How do Temperature Sensors Work?

Temperature sensors convert temperature fluctuations into electrical information. Common types include

  • Thermocouples,
  • Resistance temperature detectors (RTDs), and
  • Thermistors.

Thermocouples have two distinct metal wires linked at one end; temperature variations cause a voltage differential.

RTDs are based on the temperature-dependent variation in the electrical resistance of materials such as platinum; resistance increases as temperatures increases.

Thermistors are the temperature-sensitive resistors whose resistance changes considerably with temperature.

Modern temperature sensors frequently combine these concepts with electronic circuits to generate precise and linear output signals that can be read & interpreted by instruments (or) control systems, enabling accurate temperature measurement and control in a variety of applications.