Yes, but you have to consider reflection. Usually the oven is hotter than the target and the target has some reflectivity, so the infrared thermometer measures the emitted energy of the hot target, as well as the reflected energy of the oven walls or heaters, causing the indication to read too high. This problem may be eliminated using a system called background compensation where the instrument and software will subtract the reflected energy and provide temperature based on the real target energy. The second choice is to measure the target at the exit of the oven.
For glass, plastic films, food and paper applications, selection of the right thermometer can eliminate the reflection problem without background compensation or viewing at the exit of the oven. Visit our Industry Applications pages or contact us with more questions regarding your application.