Fiber optic high temperature sensor for applications in iron and steel industries

Tianyou Hao

doi:10.1117/12.2321932

1 December 1991 Fiber optic high temperature sensor for applications in iron and steel industries

Tianyou Hao

Proceedings Volume 1584, Fiber Optic and Laser Sensors IX; (1991) https://doi.org/10.1117/12.2321932
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

A fiber optic high temperature sensor operated in the temperature range of 800 to 1800°C has been constructed, calibrated and applied in iron and steel industries. This sensor is a non-contacted pyrometer, and a single optical fiber transmitted the radiant flux, which comes from the surface measured, to two photodiodes. This sensor uses numerical aperture (NA.) of the fiber optic as the design principle to obtain optimal sensitivity and distance coefficient value. The response time of the sensor is 500ms and the basic error is ±0.5%. Calibration and operation of the sensor are relatively simple, and the operational life of the sensor approximately one year. This sensor has been used in various iron and steel industries in China and the results of sensor applications will be discussed.

Citation Download Citation

Tianyou Hao "Fiber optic high temperature sensor for applications in iron and steel industries", Proc. SPIE 1584, Fiber Optic and Laser Sensors IX, (1 December 1991); https://doi.org/10.1117/12.2321932

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