- A resistive element which measures electromagnetic radiation by absorbing it and converting it into heat. The increase in its temperature is used to measure the radiant energy. Also called heat sensor (1), or bolometer.
- An instrument or device, such as a heat detector (1), which senses heat. Also called heat sensor (2).
- An instrument or device, such as a thermocouple, which functions or is actuated when exposed to heat.
- An instrument or device, such as a thermometer, which quantifies heat.
- synonymheat sensor