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MMG7 Sensor with 'Thin Glass' Measurement Spectrum

Raytek adds a model for use in the production of thin glass to its Marathon pyrometer series. The new MMG7 sensor measures infrared radiation at a wavelength of 7.9 ┬Ám. The technology leader in the field of infrared temperature measurement has precisely adjusted the measurement spectrum to the reflecting medium and to the 300 to 900 °C measured temperature range. At shorter wavelengths, background radiation could distort the results, while surface reflection is too strong in the longer-wave area. The point sensor has an outstanding 100:1resolution, and achieves a precision of ± 1 % and a repeatability of ± 0.5 % or ± 0.5 °C. With a response time of just 120 ms, the device delivers reliable data even in very fast processes.

For technological reasons, Raytek follows a policy of diversification. The company does not produce universal sensors but solutions tailored to specific conditions of use. The Marathon series covers a temperature range from -40 °C to +2,250 °C. The series satisfies the most exacting requirements in terms of precision, reliability, flexibility, and ruggedness. The smallest measurement spot size is 1.1 mm. All Marathon pyrometers become operational extremely quickly: the shortest response time is 20 ms. The measuring devices feature simultaneous analog and digital outputs. They can be integrated into automation networks via an RS485 interface. The devices are equipped with a through-the-lens sight and optionally with video or laser sighting. Accessories for the IP65 instruments include an air-purge unit or a ThermoJacket protective casing with integrated air-purge unit and cooling for use in ambient temperatures of up to 315 °C.

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