Aiming at problem that sensitivity and offset thermal drift of manganin pressure gauge are large as the temperature fluctuates

and hardware compensation is difficult

an effective temperature compensation model is proposed. In order to reduce data errors

design ultrahigh-pressure generator and refine the experimental device structure. By adopting automated data acquisition system

acquisition speed and data size are highly improved

realize multivariable simultaneous acquisition. After analyzing the characteristics of massive data

a mathematical compensation model for manganin pressure gauge is deduced. The experimental results show that this compensation model can well demonstrate the characteristics of the manganin pressure gauge in the interaction of temperature and pressure

provide a new method for an accurate pressure measurement even at high temperature.