Aiming at common constant-frequency amplitude modulation eddy current displacement sensor

systematic deviation rule of the test results which are caused by the temperature changes of the sensor probe and the measured conductor is discussed. And the influence of the temperature is validated by the laboratory experiment. The analysis shows that:（ 1） Due to the temperature deviation of the sensor probe

the test result is shifted

and the deviation result of the sensor probe has the negative correlation with the tempature changes;（ 2）the tested conductor has a critical equivalent resistance R*

when the equivalent resistance R2≥R*

temperature changes and output results are positively correlated with each other

otherwise it is negatively correlated;（ 3） The test result has the obvious positive drift phenomenon affected by the temperature changes

The output value drift also appears better follow-up within a limited extend of temperature fluctuations. In consideration of high test precision requirements

it should be amended.