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Application of thermistor in liquid rocket engine testing

Guan Li(Beijing Institute of Aerospace Testing Technology,Beijing 100074,China)  
The characteristics of thermistor temperature sensors used in the cryogenic liquid rocket engine testing were presented,the thermistor temperature sensors application scheme in liquid rocket engine testing was introduced,including design of the signal convertor and method dealing with thermistor temperature sensors calibration data.The thermistor temperature sensors self heating was analysed and measure system composition was also introduced. The measurement accuracy associated with thermistor was analysed,the uncertainty measurement accuracy of thermistor temperature sensors,which is less than 0.3 K,was presented.
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