Infrared pyrometer for glass production

Raytek has added to its Marathon pyrometer series a model for use in the production of thin glass. The MMG7 sensor measures infrared radiation at a wavelength of 7.9µm. The company has precisely adjusted the measurement spectrum to the reflecting medium and to the 300 to 900°C measured temperature range.

Raytek says that at shorter wavelengths, background radiation could distort results, while surface reflection is too strong in the longer-wave area.

The point sensor has a 100:1resolution, and achieves a precision of ± 1% and a repeatability of ± 0.5% or ± 0.5°C. With a response time of just 120ms, the device is said to deliver reliable data even in very fast processes.