Sensors

Pyroelectric detectors designed for temperature sensing

24th January 2018
Lanna Deamer
0

 

Every object emits heat in the form electromagnetic waves and sampling the energy radiated into space allows the measurement of the temperature of the object without ever having to touch it.

The wavelength of the light emitted by the object depends on it‘s temperature, with hotter objects generating light at shorter wavelengths.

The response of most detectors used to measure electromagnetic radiation is in some way wavelength dependent.

Thermal detectors have the widest wavelength response with the limiting factor being the transmission window used to protect the sensing element.

Pyroelectric detectors are suitable for this application with high temperature stability, signal to noise and low cost.

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