Two concepts for strain compensated temperature measurements based on fiber Bragg gratings (FBG) have been developed for application in high power generators. Friction compensated temperature measurements were achieved in a temperature range between -30°C and 125°C with uncertainties less than 1°C using a measuring cable of 10 m length. A technique for decoupling temperature and strain, while additionally compensating transversal forces, enabled temperature measurements in a temperature range between -30°C und 110°C by using a surface-attached FBG sensor element for the first time.
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Two concepts for strain compensated temperature measurements based on fiber Bragg gratings (FBG) have been developed for application in high power generators. Friction compensated temperature measurements were achieved in a temperature range between -30°C and 125°C with uncertainties less than 1°C using a measuring cable of 10 m length. A technique for decoupling temperature and strain, while additionally compensating transversal forces, enabled temperature measurements in a temperature range be...
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