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In Situ Surface Temperature Measurement in a Conveyor Belt Furnace via Inline Infrared Thermography

: Ourinson, D.; Emanuel, G.; Dammaß, G.; Müller, H.; Clement, F.; Glunz, S.W.


Journal of visualized experiments : JoVE. Online resource (2020), Nr.159, Art. e60963
ISSN: 1940-087X
Fraunhofer ISE ()
Photovoltaik; Silicium-Photovoltaik; Metallisierung und Strukturierung; thermography; belt furnace; solar cells; temperature distribution; firing

Measuring the surface temperature of objects that are processed in conveyor belt furnaces is an important tool in process control and quality assurance. Currently, the surface temperature of objects processed in conveyor belt furnaces is typically measured via thermocouples. However, infrared (IR) thermography presents multiple advantages compared to thermocouple measurements, as it is a contactless, real-time, and spatially resolved method. Here, as a representative proof-of-concept example, an inline thermography system is successfully installed into an IR lamp powered solar firing furnace, which is used for the contact firing process of industrial Si solar cells. This protocol describes how to install an IR camera into a conveyor belt furnace, conduct a customer correction of a factory calibrated IR camera, and perform the evaluation of spatial surface temperature distribution on a target object.