App Note on InfraTec’s Detector Analyses
Online?? –?? This free application note by InfraTec provides some insight into how temperature affects the various components of a typical pyroelectric infrared detector and how the effects of ambient temperature variations on detector performance can be minimized.
Pyroelectric detectors can be used over a wide ambient temperature range without cooling or stabilizing.
The active elements react to changes of incoming thermal radiation levels. This effect is used to create an electrical detector signal.
Changes of ambient temperature will cause drift of the detector signal and noise expressed by its temperature coefficient (TC), because the components used within a detector assembly change their properties with temperature.
Also fluctuations or instability in detector output can be caused by temperature changes especially in temperature ramps.
To minimize such instabilities, thermal compensation of the sensitive pyroelectric element is a very effective means of prevention.
Both effects should always be considered separately since they are caused by factors that require different corrective measures in detector design.
The complete article, “Temperature Behavior” may be freely downloaded online in PDF format at: www.infratec.eu/sensor-division/sensor-division-knowledge/application-notes.html.
Other notes are also available there including:
- Detector Basics
- Advanced Features of InfraTec Pyroelectric Detectors
- JFET and Operation Amplifier Characteristics
- Handling Precautions for Pyroelectric Detectors
InfraTec GmbH Infrarotsensorik und Messtechnik is a specialist for products and services in the field of infrared technology. InfraTec was founded in 1991 and, with its own capacities in manufacturing and development, employs about 200 staff now.
Gostritzer Str. 61 – 63
Phone:+49 351 871-8625
InfraTec Infrared LLC
5048 Tennyson Parkway, Suite 250,
Plano, TX 75024 USA
InfraTec Infrared Ltd.
Phone:+44 1246 267562
InfraTec Representative for PR of China
c/o German Industry & Commerce
Shanghai, PR of China
Phone: +8621 68758536 ext 1633